MongodbReader cancellation tokens and some unit tests

CoreUnitTests/DataAccessTests/MongoDbIndexHandlerTests/BaseIndexTests.cs

@@ -2,7 +2,6 @@ using System.Collections.Generic;
 using System.Threading;
 using CoreUnitTests.Infrastructure;
 using MongoDB.Bson;
-using MongoDB.Bson.Serialization;
 using MongoDB.Driver;
 using MongoDbGenericRepository.DataAccess.Index;
 using Moq;
@@ -41,5 +40,4 @@ public class BaseIndexTests : GenericTestContext<MongoDbIndexHandler>
 
         return (asyncCursor, indexManager);
     }
-
 }

CoreUnitTests/DataAccessTests/MongoDbIndexHandlerTests/CreateAscendingIndexAsyncTests.cs

@@ -19,7 +19,7 @@ public class CreateAscendingIndexAsyncTests : BaseIndexTests
     private readonly Expression<Func<TestDocument, object>> fieldExpression = t => t.SomeContent2;
 
     [Fact]
-    public async Task WhenFieldExpression_ThenCreatesIndex()
+    public async Task WithFieldExpression_CreatesIndex()
     {
         // Arrange
         var expectedIndexName = Fixture.Create<string>();
@@ -42,7 +42,7 @@ public class CreateAscendingIndexAsyncTests : BaseIndexTests
     }
 
     [Fact]
-    public async Task WhenFieldExpressionAndOptions_ThenCreatesIndex()
+    public async Task WithFieldExpressionAndOptions_CreatesIndex()
     {
         // Arrange
         var expectedIndexName = Fixture.Create<string>();
@@ -68,7 +68,7 @@ public class CreateAscendingIndexAsyncTests : BaseIndexTests
     }
 
     [Fact]
-    public async Task WhenFieldExpressionAndPartitionKey_ThenCreatesIndex()
+    public async Task WithFieldExpressionAndPartitionKey_CreatesIndex()
     {
         // Arrange
         var expectedIndexName = Fixture.Create<string>();
@@ -95,7 +95,7 @@ public class CreateAscendingIndexAsyncTests : BaseIndexTests
     }
 
     [Fact]
-    public async Task WhenFieldExpressionAndCancellationToken_ThenCreatesIndex()
+    public async Task WithFieldExpressionAndCancellationToken_CreatesIndex()
     {
         // Arrange
         var expectedIndexName = Fixture.Create<string>();
@@ -121,7 +121,7 @@ public class CreateAscendingIndexAsyncTests : BaseIndexTests
     }
 
     [Fact]
-    public async Task WhenFieldExpressionAndOptionsAndPartitionKeyAndCancellationToken_ThenCreatesIndex()
+    public async Task WithFieldExpressionAndOptionsAndPartitionKeyAndCancellationToken_CreatesIndex()
     {
         // Arrange
         var expectedIndexName = Fixture.Create<string>();

CoreUnitTests/DataAccessTests/MongoDbIndexHandlerTests/CreateCombinedTextIndexAsyncTests.cs

@@ -29,7 +29,7 @@ public class CreateCombinedTextIndexAsyncTests : BaseIndexTests
         => this.testOutputHelper = testOutputHelper;
 
     [Fact]
-    public async Task WhenFieldExpression_ThenCreatesIndex()
+    public async Task WithFieldExpression_CreatesIndex()
     {
         // Arrange
         var expectedIndexName = Fixture.Create<string>();
@@ -52,7 +52,7 @@ public class CreateCombinedTextIndexAsyncTests : BaseIndexTests
     }
 
     [Fact]
-    public async Task WhenFieldExpressionAndOptions_ThenCreatesIndex()
+    public async Task WithFieldExpressionAndOptions_CreatesIndex()
     {
         // Arrange
         var expectedIndexName = Fixture.Create<string>();
@@ -78,7 +78,7 @@ public class CreateCombinedTextIndexAsyncTests : BaseIndexTests
     }
 
     [Fact]
-    public async Task WhenFieldExpressionAndPartitionKey_ThenCreatesIndex()
+    public async Task WithFieldExpressionAndPartitionKey_CreatesIndex()
     {
         // Arrange
         var expectedIndexName = Fixture.Create<string>();
@@ -105,7 +105,7 @@ public class CreateCombinedTextIndexAsyncTests : BaseIndexTests
     }
 
     [Fact]
-    public async Task WhenFieldExpressionAndCancellationToken_ThenCreatesIndex()
+    public async Task WithFieldExpressionAndCancellationToken_CreatesIndex()
     {
         // Arrange
         var expectedIndexName = Fixture.Create<string>();
@@ -131,7 +131,7 @@ public class CreateCombinedTextIndexAsyncTests : BaseIndexTests
     }
 
     [Fact]
-    public async Task WhenFieldExpressionAndOptionsAndPartitionKeyAndCancellationToken_ThenCreatesIndex()
+    public async Task WithFieldExpressionAndOptionsAndPartitionKeyAndCancellationToken_CreatesIndex()
     {
         // Arrange
         var expectedIndexName = Fixture.Create<string>();

CoreUnitTests/DataAccessTests/MongoDbIndexHandlerTests/CreateDescendingIndexAsyncTests.cs

@@ -19,7 +19,7 @@ public class CreateDescendingIndexAsyncTests : BaseIndexTests
     private readonly Expression<Func<TestDocument, object>> fieldExpression = t => t.SomeContent2;
 
     [Fact]
-    public async Task WhenFieldExpression_ThenCreatesIndex()
+    public async Task WithFieldExpression_CreatesIndex()
     {
         // Arrange
         var expectedIndexName = Fixture.Create<string>();
@@ -42,7 +42,7 @@ public class CreateDescendingIndexAsyncTests : BaseIndexTests
     }
 
     [Fact]
-    public async Task WhenFieldExpressionAndOptions_ThenCreatesIndex()
+    public async Task WithFieldExpressionAndOptions_CreatesIndex()
     {
         // Arrange
         var expectedIndexName = Fixture.Create<string>();
@@ -68,7 +68,7 @@ public class CreateDescendingIndexAsyncTests : BaseIndexTests
     }
 
     [Fact]
-    public async Task WhenFieldExpressionAndPartitionKey_ThenCreatesIndex()
+    public async Task WithFieldExpressionAndPartitionKey_CreatesIndex()
     {
         // Arrange
         var expectedIndexName = Fixture.Create<string>();
@@ -95,7 +95,7 @@ public class CreateDescendingIndexAsyncTests : BaseIndexTests
     }
 
     [Fact]
-    public async Task WhenFieldExpressionAndCancellationToken_ThenCreatesIndex()
+    public async Task WithFieldExpressionAndCancellationToken_CreatesIndex()
     {
         // Arrange
         var expectedIndexName = Fixture.Create<string>();
@@ -121,7 +121,7 @@ public class CreateDescendingIndexAsyncTests : BaseIndexTests
     }
 
     [Fact]
-    public async Task WhenFieldExpressionAndOptionsAndPartitionKeyAndCancellationToken_ThenCreatesIndex()
+    public async Task WithFieldExpressionAndOptionsAndPartitionKeyAndCancellationToken_CreatesIndex()
     {
         // Arrange
         var expectedIndexName = Fixture.Create<string>();

CoreUnitTests/DataAccessTests/MongoDbIndexHandlerTests/CreateHashedIndexAsyncTests.cs

@@ -24,7 +24,7 @@ public class CreateHashedIndexAsyncTests : BaseIndexTests
         => this.testOutputHelper = testOutputHelper;
 
     [Fact]
-    public async Task WhenFieldExpression_ThenCreatesIndex()
+    public async Task WithFieldExpression_CreatesIndex()
     {
         // Arrange
         var expectedIndexName = Fixture.Create<string>();
@@ -47,7 +47,7 @@ public class CreateHashedIndexAsyncTests : BaseIndexTests
     }
 
     [Fact]
-    public async Task WhenFieldExpressionAndOptions_ThenCreatesIndex()
+    public async Task WithFieldExpressionAndOptions_CreatesIndex()
     {
         // Arrange
         var expectedIndexName = Fixture.Create<string>();
@@ -73,7 +73,7 @@ public class CreateHashedIndexAsyncTests : BaseIndexTests
     }
 
     [Fact]
-    public async Task WhenFieldExpressionAndPartitionKey_ThenCreatesIndex()
+    public async Task WithFieldExpressionAndPartitionKey_CreatesIndex()
     {
         // Arrange
         var expectedIndexName = Fixture.Create<string>();
@@ -100,7 +100,7 @@ public class CreateHashedIndexAsyncTests : BaseIndexTests
     }
 
     [Fact]
-    public async Task WhenFieldExpressionAndCancellationToken_ThenCreatesIndex()
+    public async Task WithFieldExpressionAndCancellationToken_CreatesIndex()
     {
         // Arrange
         var expectedIndexName = Fixture.Create<string>();
@@ -126,7 +126,7 @@ public class CreateHashedIndexAsyncTests : BaseIndexTests
     }
 
     [Fact]
-    public async Task WhenFieldExpressionAndOptionsAndPartitionKeyAndCancellationToken_ThenCreatesIndex()
+    public async Task WithFieldExpressionAndOptionsAndPartitionKeyAndCancellationToken_CreatesIndex()
     {
         // Arrange
         var expectedIndexName = Fixture.Create<string>();

CoreUnitTests/DataAccessTests/MongoDbIndexHandlerTests/CreateTextIndexAsyncTests.cs

@@ -19,7 +19,7 @@ public class CreateTextIndexAsyncTests : BaseIndexTests
     private readonly Expression<Func<TestDocument, object>> fieldExpression = t => t.SomeContent2;
 
     [Fact]
-    public async Task WhenFieldExpression_ThenCreatesIndex()
+    public async Task WithFieldExpression_CreatesIndex()
     {
         // Arrange
         var expectedIndexName = Fixture.Create<string>();
@@ -42,7 +42,7 @@ public class CreateTextIndexAsyncTests : BaseIndexTests
     }
 
     [Fact]
-    public async Task WhenFieldExpressionAndOptions_ThenCreatesIndex()
+    public async Task WithFieldExpressionAndOptions_CreatesIndex()
     {
         // Arrange
         var expectedIndexName = Fixture.Create<string>();
@@ -68,7 +68,7 @@ public class CreateTextIndexAsyncTests : BaseIndexTests
     }
 
     [Fact]
-    public async Task WhenFieldExpressionAndPartitionKey_ThenCreatesIndex()
+    public async Task WithFieldExpressionAndPartitionKey_CreatesIndex()
     {
         // Arrange
         var expectedIndexName = Fixture.Create<string>();
@@ -95,7 +95,7 @@ public class CreateTextIndexAsyncTests : BaseIndexTests
     }
 
     [Fact]
-    public async Task WhenFieldExpressionAndCancellationToken_ThenCreatesIndex()
+    public async Task WithFieldExpressionAndCancellationToken_CreatesIndex()
     {
         // Arrange
         var expectedIndexName = Fixture.Create<string>();
@@ -121,7 +121,7 @@ public class CreateTextIndexAsyncTests : BaseIndexTests
     }
 
     [Fact]
-    public async Task WhenFieldExpressionAndOptionsAndPartitionKeyAndCancellationToken_ThenCreatesIndex()
+    public async Task WithFieldExpressionAndOptionsAndPartitionKeyAndCancellationToken_CreatesIndex()
     {
         // Arrange
         var expectedIndexName = Fixture.Create<string>();

CoreUnitTests/DataAccessTests/MongoDbIndexHandlerTests/DropIndexAsyncTests.cs

@@ -13,7 +13,7 @@ namespace CoreUnitTests.DataAccessTests.MongoDbIndexHandlerTests;
 public class DropIndexAsyncTests : BaseIndexTests
 {
     [Fact]
-    public async Task WhenIndexName_ThenDropsIndex()
+    public async Task WithIndexName_DropsIndex()
     {
         // Arrange
         var expectedIndexName = Fixture.Create<string>();
@@ -30,7 +30,7 @@ public class DropIndexAsyncTests : BaseIndexTests
     }
 
     [Fact]
-    public async Task WhenIndexNameAndPartitionKey_ThenDropsIndex()
+    public async Task WithIndexNameAndPartitionKey_DropsIndex()
     {
         // Arrange
         var expectedIndexName = Fixture.Create<string>();
@@ -50,7 +50,7 @@ public class DropIndexAsyncTests : BaseIndexTests
     }
 
     [Fact]
-    public async Task WhenIndexNameAndCancellationToken_ThenDropsIndex()
+    public async Task WithIndexNameAndCancellationToken_DropsIndex()
     {
         // Arrange
         var expectedIndexName = Fixture.Create<string>();
@@ -69,7 +69,7 @@ public class DropIndexAsyncTests : BaseIndexTests
     }
 
     [Fact]
-    public async Task WhenIndexNameAndPartitionKeyAndCancellationToken_ThenDropsIndex()
+    public async Task WithIndexNameAndPartitionKeyAndCancellationToken_DropsIndex()
     {
         // Arrange
         var expectedIndexName = Fixture.Create<string>();

CoreUnitTests/DataAccessTests/MongoDbReaderTests/BaseReaderTests.cs

@@ -0,0 +1,69 @@
+using System.Collections.Generic;
+using System.Threading;
+using CoreUnitTests.Infrastructure;
+using MongoDB.Driver;
+using MongoDbGenericRepository.DataAccess.Read;
+using Moq;
+
+namespace CoreUnitTests.DataAccessTests.MongoDbReaderTests;
+
+public class BaseReaderTests : GenericTestContext<MongoDbReader>
+{
+    protected Mock<IAsyncCursor<TDocument>> SetupSyncCursor<TDocument>(List<TDocument> documents)
+    {
+        var asyncCursor = MockOf<IAsyncCursor<TDocument>>();
+
+        var moveNextSequence = asyncCursor
+            .SetupSequence(x => x.MoveNext(It.IsAny<CancellationToken>()));
+
+        var currentSequence = asyncCursor
+            .SetupSequence(x => x.Current);
+
+        foreach (var projection in documents)
+        {
+            moveNextSequence.Returns(true);
+            currentSequence.Returns(new[] {projection});
+        }
+
+        moveNextSequence.Returns(false);
+        return asyncCursor;
+    }
+
+    protected Mock<IAsyncCursor<TDocument>> SetupAsyncCursor<TDocument>(List<TDocument> documents)
+    {
+        var asyncCursor = MockOf<IAsyncCursor<TDocument>>();
+
+        var moveNextSequence = asyncCursor
+            .SetupSequence(x => x.MoveNextAsync(It.IsAny<CancellationToken>()));
+
+        var currentSequence = asyncCursor
+            .SetupSequence(x => x.Current);
+
+        foreach (var projection in documents)
+        {
+            moveNextSequence.ReturnsAsync(true);
+            currentSequence.Returns(new[] {projection});
+        }
+
+        moveNextSequence.ReturnsAsync(false);
+        return asyncCursor;
+    }
+
+    protected static void SetupFindAsync<TDocument, TProjection>(Mock<IMongoCollection<TDocument>> collection, Mock<IAsyncCursor<TProjection>> asyncCursor) =>
+        collection
+            .Setup(
+                x => x.FindAsync(
+                    It.IsAny<FilterDefinition<TDocument>>(),
+                    It.IsAny<FindOptions<TDocument, TProjection>>(),
+                    It.IsAny<CancellationToken>()))
+            .ReturnsAsync(asyncCursor.Object);
+
+    protected static void SetupFindSync<TDocument, TProjection>(Mock<IMongoCollection<TDocument>> collection, Mock<IAsyncCursor<TProjection>> asyncCursor) =>
+        collection
+            .Setup(
+                x => x.FindSync(
+                    It.IsAny<FilterDefinition<TDocument>>(),
+                    It.IsAny<FindOptions<TDocument, TProjection>>(),
+                    It.IsAny<CancellationToken>()))
+            .Returns(asyncCursor.Object);
+}

CoreUnitTests/DataAccessTests/MongoDbReaderTests/GetByIdAsyncTests.cs

@@ -0,0 +1,115 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+using AutoFixture;
+using CoreUnitTests.Infrastructure.Model;
+using FluentAssertions;
+using MongoDB.Driver;
+using MongoDbGenericRepository;
+using Moq;
+using Xunit;
+
+namespace CoreUnitTests.DataAccessTests.MongoDbReaderTests;
+
+public class GetByIdAsyncTests : BaseReaderTests
+{
+    [Fact]
+    public async Task WithId_GetsMatchingDocument()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var documents = Fixture.CreateMany<TestDocument>().ToList();
+        var (context, cursor) = SetupAsyncGet(documents, collection);
+
+        // Act
+        var result = await Sut.GetByIdAsync<TestDocument, Guid>(documents[0].Id);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(null), Times.Once);
+        cursor.Verify(x => x.Current, Times.Once);
+        cursor.Verify(x => x.MoveNextAsync(CancellationToken.None), Times.Once);
+        result.Should().NotBeNull();
+        result.Should().Be(documents[0]);
+    }
+
+    [Fact]
+    public async Task WithIdAndCancellationToken_GetsMatchingDocument()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var documents = Fixture.CreateMany<TestDocument>().ToList();
+        var token = new CancellationToken(true);
+        var (context, cursor) = SetupAsyncGet(documents, collection);
+
+        // Act
+        var result = await Sut.GetByIdAsync<TestDocument, Guid>(documents[0].Id, cancellationToken: token);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(null), Times.Once);
+        cursor.Verify(x => x.Current, Times.Once);
+        cursor.Verify(x => x.MoveNextAsync(token), Times.Once);
+        result.Should().NotBeNull();
+        result.Should().Be(documents[0]);
+    }
+
+    [Fact]
+    public async Task WithIdAndPartitionKey_GetsMatchingDocument()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var documents = Fixture.CreateMany<TestDocument>().ToList();
+        var partitionKey = Fixture.Create<string>();
+        var (context, cursor) = SetupAsyncGet(documents, collection, partitionKey);
+
+        // Act
+        var result = await Sut.GetByIdAsync<TestDocument, Guid>(documents[0].Id, partitionKey);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(partitionKey), Times.Once);
+        cursor.Verify(x => x.Current, Times.Once);
+        cursor.Verify(x => x.MoveNextAsync(CancellationToken.None), Times.Once);
+        result.Should().NotBeNull();
+        result.Should().Be(documents[0]);
+    }
+
+    [Fact]
+    public async Task WithIdAndPartitionKeyAndCancellationToken_GetsMatchingDocument()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var documents = Fixture.CreateMany<TestDocument>().ToList();
+        var partitionKey = Fixture.Create<string>();
+        var token = new CancellationToken(true);
+        var (context, cursor) = SetupAsyncGet(documents, collection, partitionKey);
+
+        // Act
+        var result = await Sut.GetByIdAsync<TestDocument, Guid>(documents[0].Id, partitionKey, token);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(partitionKey), Times.Once);
+        cursor.Verify(x => x.Current, Times.Once);
+        cursor.Verify(x => x.MoveNextAsync(token), Times.Once);
+        result.Should().NotBeNull();
+        result.Should().Be(documents[0]);
+    }
+
+    private (Mock<IMongoDbContext>, Mock<IAsyncCursor<TDocument>>) SetupAsyncGet<TDocument>(
+        List<TDocument> documents,
+        Mock<IMongoCollection<TDocument>> collection,
+        string partitionKey = null)
+    {
+        var asyncCursor = SetupAsyncCursor(documents);
+
+        SetupFindAsync(collection, asyncCursor);
+
+        var context = MockOf<IMongoDbContext>();
+
+        context
+            .Setup(x => x.GetCollection<TDocument>(partitionKey))
+            .Returns(collection.Object);
+
+        return (context, asyncCursor);
+    }
+}

CoreUnitTests/DataAccessTests/MongoDbReaderTests/GetByIdTests.cs

@@ -0,0 +1,114 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading;
+using AutoFixture;
+using CoreUnitTests.Infrastructure.Model;
+using FluentAssertions;
+using MongoDB.Driver;
+using MongoDbGenericRepository;
+using Moq;
+using Xunit;
+
+namespace CoreUnitTests.DataAccessTests.MongoDbReaderTests;
+
+public class GetByIdTests : BaseReaderTests
+{
+    [Fact]
+    public void WithId_GetsMatchingDocument()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var documents = Fixture.CreateMany<TestDocument>().ToList();
+        var (context, cursor) = SetupAsyncGet(documents, collection);
+
+        // Act
+        var result = Sut.GetById<TestDocument, Guid>(documents[0].Id);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(null), Times.Once);
+        cursor.Verify(x => x.Current, Times.Once);
+        cursor.Verify(x => x.MoveNext(CancellationToken.None), Times.Once);
+        result.Should().NotBeNull();
+        result.Should().Be(documents[0]);
+    }
+
+    [Fact]
+    public void WithIdAndCancellationToken_GetsMatchingDocument()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var documents = Fixture.CreateMany<TestDocument>().ToList();
+        var token = new CancellationToken(true);
+        var (context, cursor) = SetupAsyncGet(documents, collection);
+
+        // Act
+        var result = Sut.GetById<TestDocument, Guid>(documents[0].Id, cancellationToken: token);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(null), Times.Once);
+        cursor.Verify(x => x.Current, Times.Once);
+        cursor.Verify(x => x.MoveNext(token), Times.Once);
+        result.Should().NotBeNull();
+        result.Should().Be(documents[0]);
+    }
+
+    [Fact]
+    public void WithIdAndPartitionKey_GetsMatchingDocument()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var documents = Fixture.CreateMany<TestDocument>().ToList();
+        var partitionKey = Fixture.Create<string>();
+        var (context, cursor) = SetupAsyncGet(documents, collection, partitionKey);
+
+        // Act
+        var result = Sut.GetById<TestDocument, Guid>(documents[0].Id, partitionKey);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(partitionKey), Times.Once);
+        cursor.Verify(x => x.Current, Times.Once);
+        cursor.Verify(x => x.MoveNext(CancellationToken.None), Times.Once);
+        result.Should().NotBeNull();
+        result.Should().Be(documents[0]);
+    }
+
+    [Fact]
+    public void WithIdAndPartitionKeyAndCancellationToken_GetsMatchingDocument()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var documents = Fixture.CreateMany<TestDocument>().ToList();
+        var partitionKey = Fixture.Create<string>();
+        var token = new CancellationToken(true);
+        var (context, cursor) = SetupAsyncGet(documents, collection, partitionKey);
+
+        // Act
+        var result = Sut.GetById<TestDocument, Guid>(documents[0].Id, partitionKey, token);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(partitionKey), Times.Once);
+        cursor.Verify(x => x.Current, Times.Once);
+        cursor.Verify(x => x.MoveNext(token), Times.Once);
+        result.Should().NotBeNull();
+        result.Should().Be(documents[0]);
+    }
+
+    private (Mock<IMongoDbContext>, Mock<IAsyncCursor<TDocument>>) SetupAsyncGet<TDocument>(
+        List<TDocument> documents,
+        Mock<IMongoCollection<TDocument>> collection,
+        string partitionKey = null)
+    {
+        var asyncCursor = SetupSyncCursor(documents);
+
+        SetupFindSync(collection, asyncCursor);
+
+        var context = MockOf<IMongoDbContext>();
+
+        context
+            .Setup(x => x.GetCollection<TDocument>(partitionKey))
+            .Returns(collection.Object);
+
+        return (context, asyncCursor);
+    }
+}

CoreUnitTests/DataAccessTests/MongoDbReaderTests/GetOneAsyncTests.cs

@@ -0,0 +1,283 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Linq.Expressions;
+using System.Threading;
+using System.Threading.Tasks;
+using AutoFixture;
+using CoreUnitTests.Infrastructure.Model;
+using FluentAssertions;
+using MongoDB.Driver;
+using MongoDbGenericRepository;
+using Moq;
+using Xunit;
+
+namespace CoreUnitTests.DataAccessTests.MongoDbReaderTests;
+
+public class GetOneAsyncTests : BaseReaderTests
+{
+    [Fact]
+    public async Task WithFilter_GetsMatchingDocuments()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var documents = Fixture.CreateMany<TestDocument>().ToList();
+        Expression<Func<TestDocument, bool>> filter = x => x.Id == documents[0].Id;
+        var (context, cursor) = SetupAsyncGet(documents, collection);
+
+
+        // Act
+        var result = await Sut.GetOneAsync<TestDocument, Guid>(filter);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(null), Times.Once);
+        cursor.Verify(x => x.Current, Times.Once);
+        cursor.Verify(x => x.MoveNextAsync(CancellationToken.None), Times.Once);
+        result.Should().NotBeNull();
+        result.Should().Be(documents[0]);
+    }
+
+    [Fact]
+    public async Task WithFilterAndCancellationToken_GetsMatchingDocuments()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var documents = Fixture.CreateMany<TestDocument>().ToList();
+        var token = new CancellationToken(true);
+        Expression<Func<TestDocument, bool>> filter = x => x.Id == documents[0].Id;
+        var (context, cursor) = SetupAsyncGet(documents, collection);
+
+        // Act
+        var result = await Sut.GetOneAsync<TestDocument, Guid>(filter, cancellationToken: token);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(null), Times.Once);
+        cursor.Verify(x => x.Current, Times.Once);
+        cursor.Verify(x => x.MoveNextAsync(token), Times.Once);
+        result.Should().NotBeNull();
+        result.Should().Be(documents[0]);
+    }
+
+    [Fact]
+    public async Task WithFilterAndPartitionKey_GetsMatchingDocuments()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var documents = Fixture.CreateMany<TestDocument>().ToList();
+        var partitionKey = Fixture.Create<string>();
+        Expression<Func<TestDocument, bool>> filter = x => x.Id == documents[0].Id;
+        var (context, cursor) = SetupAsyncGet(documents, collection, partitionKey);
+
+        // Act
+        var result = await Sut.GetOneAsync<TestDocument, Guid>(filter, partitionKey);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(partitionKey), Times.Once);
+        cursor.Verify(x => x.Current, Times.Once);
+        cursor.Verify(x => x.MoveNextAsync(CancellationToken.None), Times.Once);
+        result.Should().NotBeNull();
+        result.Should().Be(documents[0]);
+    }
+
+    [Fact]
+    public async Task WithFilterAndPartitionKeyAndCancellationToken_GetsMatchingDocuments()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var documents = Fixture.CreateMany<TestDocument>().ToList();
+        var partitionKey = Fixture.Create<string>();
+        var token = new CancellationToken(true);
+        Expression<Func<TestDocument, bool>> filter = x => x.Id == documents[0].Id;
+        var (context, cursor) = SetupAsyncGet(documents, collection, partitionKey);
+
+        // Act
+        var result = await Sut.GetOneAsync<TestDocument, Guid>(filter, partitionKey, token);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(partitionKey), Times.Once);
+        cursor.Verify(x => x.Current, Times.Once);
+        cursor.Verify(x => x.MoveNextAsync(token), Times.Once);
+        result.Should().NotBeNull();
+        result.Should().Be(documents[0]);
+    }
+
+    [Fact]
+    public async Task WithCondition_GetsMatchingDocuments()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var documents = Fixture.CreateMany<TestDocument>().ToList();
+        var condition = Builders<TestDocument>.Filter.Eq("Id", documents[0].Id);
+        var (context, cursor) = SetupAsyncGet(documents, collection);
+
+        // Act
+        var result = await Sut.GetOneAsync<TestDocument, Guid>(condition);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(null), Times.Once);
+        cursor.Verify(x => x.Current, Times.Once);
+        cursor.Verify(x => x.MoveNextAsync(CancellationToken.None), Times.Once);
+        result.Should().NotBeNull();
+        result.Should().Be(documents[0]);
+    }
+
+    [Fact]
+    public async Task WithConditionAndCancellationToken_GetsMatchingDocuments()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var documents = Fixture.CreateMany<TestDocument>().ToList();
+        var condition = Builders<TestDocument>.Filter.Eq("Id", documents[0].Id);
+        var token = new CancellationToken(true);
+        var (context, cursor) = SetupAsyncGet(documents, collection);
+
+        // Act
+        var result = await Sut.GetOneAsync<TestDocument, Guid>(condition, cancellationToken: token);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(null), Times.Once);
+        cursor.Verify(x => x.Current, Times.Once);
+        cursor.Verify(x => x.MoveNextAsync(token), Times.Once);
+        result.Should().NotBeNull();
+        result.Should().Be(documents[0]);
+    }
+
+    [Fact]
+    public async Task WithConditionAndPartitionKey_GetsMatchingDocuments()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var documents = Fixture.CreateMany<TestDocument>().ToList();
+        var condition = Builders<TestDocument>.Filter.Eq("Id", documents[0].Id);
+        var partitionKey = Fixture.Create<string>();
+        var (context, cursor) = SetupAsyncGet(documents, collection, partitionKey);
+
+        // Act
+        var result = await Sut.GetOneAsync<TestDocument, Guid>(condition, partitionKey: partitionKey);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(partitionKey), Times.Once);
+        cursor.Verify(x => x.MoveNextAsync(CancellationToken.None), Times.Once);
+        cursor.Verify(x => x.Current, Times.Once);
+        result.Should().NotBeNull();
+        result.Should().Be(documents[0]);
+    }
+
+    [Fact]
+    public async Task WithConditionAndPartitionKeyAndCancellationToken_GetsMatchingDocuments()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var documents = Fixture.CreateMany<TestDocument>().ToList();
+        var condition = Builders<TestDocument>.Filter.Eq("Id", documents[0].Id);
+        var partitionKey = Fixture.Create<string>();
+        var token = new CancellationToken(true);
+        var (context, cursor) = SetupAsyncGet(documents, collection, partitionKey);
+
+        // Act
+        var result = await Sut.GetOneAsync<TestDocument, Guid>(condition, partitionKey: partitionKey, cancellationToken: token);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(partitionKey), Times.Once);
+        cursor.Verify(x => x.Current, Times.Once);
+        cursor.Verify(x => x.MoveNextAsync(token), Times.Once);
+        result.Should().NotBeNull();
+        result.Should().Be(documents[0]);
+    }
+
+    [Fact]
+    public async Task WithConditionAndFindOptions_GetsMatchingDocuments()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var documents = Fixture.CreateMany<TestDocument>().ToList();
+        var options = Fixture
+            .Build<FindOptions>()
+            .Without(x => x.Comment)
+            .Without(x => x.Hint)
+            .Create();
+        var condition = Builders<TestDocument>.Filter.Eq("Id", documents[0].Id);
+        var (context, cursor) = SetupAsyncGet(documents, collection);
+
+        // Act
+        var result = await Sut.GetOneAsync<TestDocument, Guid>(condition, options);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(null), Times.Once);
+        cursor.Verify(x => x.Current, Times.Once);
+        cursor.Verify(x => x.MoveNextAsync(CancellationToken.None), Times.Once);
+        result.Should().NotBeNull();
+        result.Should().Be(documents[0]);
+    }
+
+    [Fact]
+    public async Task WithConditionAndFindOptionsAndCancellationToken_GetsMatchingDocuments()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var documents = Fixture.CreateMany<TestDocument>().ToList();
+        var options = Fixture
+            .Build<FindOptions>()
+            .Without(x => x.Comment)
+            .Without(x => x.Hint)
+            .Create();
+        var condition = Builders<TestDocument>.Filter.Eq("Id", documents[0].Id);
+        var token = new CancellationToken(true);
+        var (context, cursor) = SetupAsyncGet(documents, collection);
+
+        // Act
+        var result = await Sut.GetOneAsync<TestDocument, Guid>(condition, options, cancellationToken: token);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(null), Times.Once);
+        cursor.Verify(x => x.Current, Times.Once);
+        cursor.Verify(x => x.MoveNextAsync(token), Times.Once);
+        result.Should().NotBeNull();
+        result.Should().Be(documents[0]);
+    }
+
+    [Fact]
+    public async Task WithConditionAndFindOptionsAndPartitionKeyAndCancellationToken_GetsMatchingDocuments()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var documents = Fixture.CreateMany<TestDocument>().ToList();
+        var options = Fixture
+            .Build<FindOptions>()
+            .Without(x => x.Comment)
+            .Without(x => x.Hint)
+            .Create();
+        var condition = Builders<TestDocument>.Filter.Eq("Id", documents[0].Id);
+        var token = new CancellationToken(true);
+        var partitionKey = Fixture.Create<string>();
+        var (context, cursor) = SetupAsyncGet(documents, collection, partitionKey);
+
+        // Act
+        var result = await Sut.GetOneAsync<TestDocument, Guid>(condition, options, partitionKey, token);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(partitionKey), Times.Once);
+        cursor.Verify(x => x.Current, Times.Once);
+        cursor.Verify(x => x.MoveNextAsync(token), Times.Once);
+        result.Should().NotBeNull();
+        result.Should().Be(documents[0]);
+    }
+
+    private (Mock<IMongoDbContext>, Mock<IAsyncCursor<TDocument>>) SetupAsyncGet<TDocument>(
+        List<TDocument> documents,
+        Mock<IMongoCollection<TDocument>> collection,
+        string partitionKey = null)
+    {
+        var asyncCursor = SetupAsyncCursor(documents);
+
+        SetupFindAsync(collection, asyncCursor);
+
+        var context = MockOf<IMongoDbContext>();
+
+        context
+            .Setup(x => x.GetCollection<TDocument>(partitionKey))
+            .Returns(collection.Object);
+
+        return (context, asyncCursor);
+    }
+}

CoreUnitTests/DataAccessTests/MongoDbReaderTests/GetOneTests.cs

@@ -0,0 +1,282 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Linq.Expressions;
+using System.Threading;
+using AutoFixture;
+using CoreUnitTests.Infrastructure.Model;
+using FluentAssertions;
+using MongoDB.Driver;
+using MongoDbGenericRepository;
+using Moq;
+using Xunit;
+
+namespace CoreUnitTests.DataAccessTests.MongoDbReaderTests;
+
+public class GetOneTests : BaseReaderTests
+{
+    [Fact]
+    public void WithFilter_GetsMatchingDocuments()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var documents = Fixture.CreateMany<TestDocument>().ToList();
+        Expression<Func<TestDocument, bool>> filter = x => x.Id == documents[0].Id;
+        var (context, cursor) = SetupSyncGet(documents, collection);
+
+
+        // Act
+        var result = Sut.GetOne<TestDocument, Guid>(filter);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(null), Times.Once);
+        cursor.Verify(x => x.MoveNext(CancellationToken.None), Times.Once);
+        cursor.Verify(x => x.Current, Times.Once);
+        result.Should().NotBeNull();
+        result.Should().Be(documents[0]);
+    }
+
+    [Fact]
+    public void WithFilterAndCancellationToken_GetsMatchingDocuments()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var documents = Fixture.CreateMany<TestDocument>().ToList();
+        var token = new CancellationToken(true);
+        Expression<Func<TestDocument, bool>> filter = x => x.Id == documents[0].Id;
+        var (context, cursor) = SetupSyncGet(documents, collection);
+
+        // Act
+        var result = Sut.GetOne<TestDocument, Guid>(filter, cancellationToken: token);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(null), Times.Once);
+        cursor.Verify(x => x.Current, Times.Once);
+        cursor.Verify(x => x.MoveNext(token), Times.Once);
+        result.Should().NotBeNull();
+        result.Should().Be(documents[0]);
+    }
+
+    [Fact]
+    public void WithFilterAndPartitionKey_GetsMatchingDocuments()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var documents = Fixture.CreateMany<TestDocument>().ToList();
+        var partitionKey = Fixture.Create<string>();
+        Expression<Func<TestDocument, bool>> filter = x => x.Id == documents[0].Id;
+        var (context, cursor) = SetupSyncGet(documents, collection, partitionKey);
+
+        // Act
+        var result = Sut.GetOne<TestDocument, Guid>(filter, partitionKey);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(partitionKey), Times.Once);
+        cursor.Verify(x => x.Current, Times.Once);
+        cursor.Verify(x => x.MoveNext(CancellationToken.None), Times.Once);
+        result.Should().NotBeNull();
+        result.Should().Be(documents[0]);
+    }
+
+    [Fact]
+    public void WithFilterAndPartitionKeyAndCancellationToken_GetsMatchingDocuments()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var documents = Fixture.CreateMany<TestDocument>().ToList();
+        var partitionKey = Fixture.Create<string>();
+        var token = new CancellationToken(true);
+        Expression<Func<TestDocument, bool>> filter = x => x.Id == documents[0].Id;
+        var (context, cursor) = SetupSyncGet(documents, collection, partitionKey);
+
+        // Act
+        var result = Sut.GetOne<TestDocument, Guid>(filter, partitionKey, token);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(partitionKey), Times.Once);
+        cursor.Verify(x => x.Current, Times.Once);
+        cursor.Verify(x => x.MoveNext(token), Times.Once);
+        result.Should().NotBeNull();
+        result.Should().Be(documents[0]);
+    }
+
+    [Fact]
+    public void WithCondition_GetsMatchingDocuments()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var documents = Fixture.CreateMany<TestDocument>().ToList();
+        var condition = Builders<TestDocument>.Filter.Eq("Id", documents[0].Id);
+        var (context, cursor) = SetupSyncGet(documents, collection);
+
+        // Act
+        var result = Sut.GetOne<TestDocument, Guid>(condition);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(null), Times.Once);
+        cursor.Verify(x => x.Current, Times.Once);
+        cursor.Verify(x => x.MoveNext(CancellationToken.None), Times.Once);
+        result.Should().NotBeNull();
+        result.Should().Be(documents[0]);
+    }
+
+    [Fact]
+    public void WithConditionAndCancellationToken_GetsMatchingDocuments()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var documents = Fixture.CreateMany<TestDocument>().ToList();
+        var condition = Builders<TestDocument>.Filter.Eq("Id", documents[0].Id);
+        var token = new CancellationToken(true);
+        var (context, cursor) = SetupSyncGet(documents, collection);
+
+        // Act
+        var result = Sut.GetOne<TestDocument, Guid>(condition, cancellationToken: token);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(null), Times.Once);
+        cursor.Verify(x => x.Current, Times.Once);
+        cursor.Verify(x => x.MoveNext(token), Times.Once);
+        result.Should().NotBeNull();
+        result.Should().Be(documents[0]);
+    }
+
+    [Fact]
+    public void WithConditionAndPartitionKey_GetsMatchingDocuments()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var documents = Fixture.CreateMany<TestDocument>().ToList();
+        var condition = Builders<TestDocument>.Filter.Eq("Id", documents[0].Id);
+        var partitionKey = Fixture.Create<string>();
+        var (context, cursor) = SetupSyncGet(documents, collection, partitionKey);
+
+        // Act
+        var result = Sut.GetOne<TestDocument, Guid>(condition, partitionKey: partitionKey);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(partitionKey), Times.Once);
+        cursor.Verify(x => x.MoveNext(CancellationToken.None), Times.Once);
+        cursor.Verify(x => x.Current, Times.Once);
+        result.Should().NotBeNull();
+        result.Should().Be(documents[0]);
+    }
+
+    [Fact]
+    public void WithConditionAndPartitionKeyAndCancellationToken_GetsMatchingDocuments()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var documents = Fixture.CreateMany<TestDocument>().ToList();
+        var condition = Builders<TestDocument>.Filter.Eq("Id", documents[0].Id);
+        var partitionKey = Fixture.Create<string>();
+        var token = new CancellationToken(true);
+        var (context, cursor) = SetupSyncGet(documents, collection, partitionKey);
+
+        // Act
+        var result = Sut.GetOne<TestDocument, Guid>(condition, partitionKey: partitionKey, cancellationToken: token);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(partitionKey), Times.Once);
+        cursor.Verify(x => x.Current, Times.Once);
+        cursor.Verify(x => x.MoveNext(token), Times.Once);
+        result.Should().NotBeNull();
+        result.Should().Be(documents[0]);
+    }
+
+    [Fact]
+    public void WithConditionAndFindOptions_GetsMatchingDocuments()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var documents = Fixture.CreateMany<TestDocument>().ToList();
+        var options = Fixture
+            .Build<FindOptions>()
+            .Without(x => x.Comment)
+            .Without(x => x.Hint)
+            .Create();
+        var condition = Builders<TestDocument>.Filter.Eq("Id", documents[0].Id);
+        var (context, cursor) = SetupSyncGet(documents, collection);
+
+        // Act
+        var result = Sut.GetOne<TestDocument, Guid>(condition, options);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(null), Times.Once);
+        cursor.Verify(x => x.Current, Times.Once);
+        cursor.Verify(x => x.MoveNext(CancellationToken.None), Times.Once);
+        result.Should().NotBeNull();
+        result.Should().Be(documents[0]);
+    }
+
+    [Fact]
+    public void WithConditionAndFindOptionsAndCancellationToken_GetsMatchingDocuments()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var documents = Fixture.CreateMany<TestDocument>().ToList();
+        var options = Fixture
+            .Build<FindOptions>()
+            .Without(x => x.Comment)
+            .Without(x => x.Hint)
+            .Create();
+        var condition = Builders<TestDocument>.Filter.Eq("Id", documents[0].Id);
+        var token = new CancellationToken(true);
+        var (context, cursor) = SetupSyncGet(documents, collection);
+
+        // Act
+        var result = Sut.GetOne<TestDocument, Guid>(condition, options, cancellationToken: token);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(null), Times.Once);
+        cursor.Verify(x => x.Current, Times.Once);
+        cursor.Verify(x => x.MoveNext(token), Times.Once);
+        result.Should().NotBeNull();
+        result.Should().Be(documents[0]);
+    }
+
+    [Fact]
+    public void WithConditionAndFindOptionsAndPartitionKeyAndCancellationToken_GetsMatchingDocuments()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var documents = Fixture.CreateMany<TestDocument>().ToList();
+        var options = Fixture
+            .Build<FindOptions>()
+            .Without(x => x.Comment)
+            .Without(x => x.Hint)
+            .Create();
+        var condition = Builders<TestDocument>.Filter.Eq("Id", documents[0].Id);
+        var token = new CancellationToken(true);
+        var partitionKey = Fixture.Create<string>();
+        var (context, cursor) = SetupSyncGet(documents, collection, partitionKey);
+
+        // Act
+        var result = Sut.GetOne<TestDocument, Guid>(condition, options, partitionKey, token);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(partitionKey), Times.Once);
+        cursor.Verify(x => x.Current, Times.Once);
+        cursor.Verify(x => x.MoveNext(token), Times.Once);
+        result.Should().NotBeNull();
+        result.Should().Be(documents[0]);
+    }
+
+    private (Mock<IMongoDbContext>, Mock<IAsyncCursor<TDocument>>) SetupSyncGet<TDocument>(
+        List<TDocument> documents,
+        Mock<IMongoCollection<TDocument>> collection,
+        string partitionKey = null)
+    {
+        var asyncCursor = SetupSyncCursor(documents);
+
+        SetupFindSync(collection, asyncCursor);
+
+        var context = MockOf<IMongoDbContext>();
+
+        context
+            .Setup(x => x.GetCollection<TDocument>(partitionKey))
+            .Returns(collection.Object);
+
+        return (context, asyncCursor);
+    }
+}

CoreUnitTests/DataAccessTests/MongoDbReaderTests/ProjectManyAsyncTests.cs

@@ -0,0 +1,123 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Linq.Expressions;
+using System.Threading;
+using System.Threading.Tasks;
+using AutoFixture;
+using CoreUnitTests.Infrastructure.Model;
+using FluentAssertions;
+using MongoDB.Driver;
+using MongoDbGenericRepository;
+using Moq;
+using Xunit;
+
+namespace CoreUnitTests.DataAccessTests.MongoDbReaderTests;
+
+public class ProjectManyAsyncTests : BaseReaderTests
+{
+    private readonly Expression<Func<TestDocument, bool>> filter = t => string.IsNullOrWhiteSpace(t.SomeContent2);
+
+    private readonly Expression<Func<TestDocument, TestProjection>>
+        projectionExpression = t => new TestProjection {TestDocumentId = t.Id, NestedData = t.Nested.SomeDate};
+
+    [Fact]
+    public async Task WithFilterAndProjection_Projects()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var projections = Fixture.CreateMany<TestProjection>().ToList();
+        var (context, cursor) = SetupAsyncProjection(projections, collection);
+
+        // Act
+        var result = await Sut.ProjectManyAsync<TestDocument, TestProjection, Guid>(filter, projectionExpression);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(null), Times.Once);
+        cursor.Verify(x => x.MoveNextAsync(CancellationToken.None), Times.AtLeast(1));
+        result.Should().NotBeNull();
+        result.Should().OnlyContain(x => projections.Contains(x));
+    }
+
+    [Fact]
+    public async Task WithFilterAndProjectionAndCancellationToken_Projects()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var projections = Fixture.CreateMany<TestProjection>().ToList();
+        var token = new CancellationToken(false);
+        var (context, cursor) = SetupAsyncProjection(projections, collection);
+
+        // Act
+        var result = await Sut.ProjectManyAsync<TestDocument, TestProjection, Guid>(filter, projectionExpression, cancellationToken: token);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(null), Times.Once);
+        cursor.Verify(x => x.MoveNextAsync(token), Times.AtLeast(1));
+        result.Should().NotBeNull();
+        result.Should().OnlyContain(x => projections.Contains(x));
+    }
+
+    [Fact]
+    public async Task WithFilterAndProjectionAndPartitionKey_Projects()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var projections = Fixture.CreateMany<TestProjection>().ToList();
+        var partitionKey = Fixture.Create<string>();
+        var (context, cursor) = SetupAsyncProjection(projections, collection, partitionKey);
+
+        // Act
+        var result = await Sut.ProjectManyAsync<TestDocument, TestProjection, Guid>(filter, projectionExpression, partitionKey);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(partitionKey), Times.Once);
+        cursor.Verify(x => x.MoveNextAsync(CancellationToken.None), Times.AtLeast(1));
+        result.Should().NotBeNull();
+        result.Should().OnlyContain(x => projections.Contains(x));
+    }
+
+    [Fact]
+    public async Task WithFilterAndProjectionAndPartitionKeyAndCancellationToken_Projects()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var projections = Fixture.CreateMany<TestProjection>().ToList();
+        var partitionKey = Fixture.Create<string>();
+        var token = new CancellationToken(false);
+        var (context, cursor) = SetupAsyncProjection(projections, collection, partitionKey);
+
+        // Act
+        var result = await Sut.ProjectManyAsync<TestDocument, TestProjection, Guid>(filter, projectionExpression, partitionKey, token);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(partitionKey), Times.Once);
+        cursor.Verify(x => x.MoveNextAsync(token), Times.AtLeast(1));
+        result.Should().NotBeNull();
+        result.Should().OnlyContain(x => projections.Contains(x));
+    }
+
+    private (Mock<IMongoDbContext>, Mock<IAsyncCursor<TProjection>>) SetupAsyncProjection<TDocument, TProjection>(
+        List<TProjection> projections,
+        Mock<IMongoCollection<TDocument>> collection,
+        string partitionKey = null)
+    {
+        var asyncCursor = SetupAsyncCursor(projections);
+
+        collection
+            .Setup(
+                x => x.FindAsync(
+                    It.IsAny<FilterDefinition<TDocument>>(),
+                    It.IsAny<FindOptions<TDocument, TProjection>>(),
+                    It.IsAny<CancellationToken>()))
+            .ReturnsAsync(asyncCursor.Object);
+
+        var context = MockOf<IMongoDbContext>();
+
+        context
+            .Setup(x => x.GetCollection<TDocument>(partitionKey))
+            .Returns(collection.Object);
+
+        return (context, asyncCursor);
+    }
+}

CoreUnitTests/DataAccessTests/MongoDbReaderTests/ProjectManyTests.cs

@@ -0,0 +1,117 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Linq.Expressions;
+using System.Threading;
+using System.Threading.Tasks;
+using AutoFixture;
+using CoreUnitTests.Infrastructure.Model;
+using FluentAssertions;
+using MongoDB.Driver;
+using MongoDbGenericRepository;
+using Moq;
+using Xunit;
+
+namespace CoreUnitTests.DataAccessTests.MongoDbReaderTests;
+
+public class ProjectManyTests : BaseReaderTests
+{
+    private readonly Expression<Func<TestDocument, bool>> filter = t => string.IsNullOrWhiteSpace(t.SomeContent2);
+
+    private readonly Expression<Func<TestDocument, TestProjection>>
+        projectionExpression = t => new TestProjection {TestDocumentId = t.Id, NestedData = t.Nested.SomeDate};
+
+    [Fact]
+    public void WithFilterAndProjection_Projects()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var projections = Fixture.CreateMany<TestProjection>().ToList();
+        var (context, cursor) = SetupAsyncProjection(projections, collection);
+
+        // Act
+        var result = Sut.ProjectMany<TestDocument, TestProjection, Guid>(filter, projectionExpression);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(null), Times.Once);
+        cursor.Verify(x => x.MoveNext(CancellationToken.None), Times.AtLeast(1));
+        result.Should().NotBeNull();
+        result.Should().OnlyContain(x => projections.Contains(x));
+    }
+
+    [Fact]
+    public void WithFilterAndProjectionAndCancellationToken_Projects()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var projections = Fixture.CreateMany<TestProjection>().ToList();
+        var token = new CancellationToken(false);
+        var (context, cursor) = SetupAsyncProjection(projections, collection);
+
+        // Act
+        var result = Sut.ProjectMany<TestDocument, TestProjection, Guid>(filter, projectionExpression, cancellationToken: token);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(null), Times.Once);
+        cursor.Verify(x => x.MoveNext(token), Times.AtLeast(1));
+        result.Should().NotBeNull();
+        result.Should().OnlyContain(x => projections.Contains(x));
+    }
+
+    [Fact]
+    public void WithFilterAndProjectionAndPartitionKey_Projects()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var projections = Fixture.CreateMany<TestProjection>().ToList();
+        var partitionKey = Fixture.Create<string>();
+        var (context, cursor) = SetupAsyncProjection(projections, collection, partitionKey);
+
+        // Act
+        var result = Sut.ProjectMany<TestDocument, TestProjection, Guid>(filter, projectionExpression, partitionKey);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(partitionKey), Times.Once);
+        cursor.Verify(x => x.MoveNext(CancellationToken.None), Times.AtLeast(1));
+        result.Should().NotBeNull();
+        result.Should().OnlyContain(x => projections.Contains(x));
+    }
+
+    [Fact]
+    public void WithFilterAndProjectionAndPartitionKeyAndCancellationToken_Projects()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var projections = Fixture.CreateMany<TestProjection>().ToList();
+        var partitionKey = Fixture.Create<string>();
+        var token = new CancellationToken(false);
+        var (context, cursor) = SetupAsyncProjection(projections, collection, partitionKey);
+
+        // Act
+        var result = Sut.ProjectMany<TestDocument, TestProjection, Guid>(filter, projectionExpression, partitionKey, token);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(partitionKey), Times.Once);
+        cursor.Verify(x => x.MoveNext(token), Times.AtLeast(projections.Count));
+        result.Should().NotBeNull();
+        result.Should().OnlyContain(x => projections.Contains(x));
+    }
+
+    private (Mock<IMongoDbContext>, Mock<IAsyncCursor<TProjection>>) SetupAsyncProjection<TDocument, TProjection>(
+        List<TProjection> projections,
+        Mock<IMongoCollection<TDocument>> collection,
+        string partitionKey = null)
+    {
+        var asyncCursor = SetupSyncCursor(projections);
+
+        SetupFindSync(collection, asyncCursor);
+
+        var context = MockOf<IMongoDbContext>();
+
+        context
+            .Setup(x => x.GetCollection<TDocument>(partitionKey))
+            .Returns(collection.Object);
+
+        return (context, asyncCursor);
+    }
+}

CoreUnitTests/DataAccessTests/MongoDbReaderTests/ProjectOneAsyncTests.cs

@@ -0,0 +1,121 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Linq.Expressions;
+using System.Threading;
+using System.Threading.Tasks;
+using AutoFixture;
+using CoreUnitTests.Infrastructure.Model;
+using FluentAssertions;
+using MongoDB.Driver;
+using MongoDbGenericRepository;
+using Moq;
+using Xunit;
+
+namespace CoreUnitTests.DataAccessTests.MongoDbReaderTests;
+
+public class ProjectOneAsyncTests : BaseReaderTests
+{
+    private readonly Expression<Func<TestDocument, bool>> filter = t => string.IsNullOrWhiteSpace(t.SomeContent2);
+
+    private readonly Expression<Func<TestDocument, TestProjection>>
+        projectionExpression = t => new TestProjection {TestDocumentId = t.Id, NestedData = t.Nested.SomeDate};
+
+    [Fact]
+    public async Task WithFilterAndProjection_Projects()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var projections = Fixture.CreateMany<TestProjection>().ToList();
+        var (context, cursor) = SetupAsyncProjection(projections, collection);
+
+        // Act
+        var result = await Sut.ProjectOneAsync<TestDocument, TestProjection, Guid>(filter, projectionExpression);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(null), Times.Once);
+        cursor.Verify(x => x.Current, Times.Once);
+        cursor.Verify(x => x.MoveNextAsync(CancellationToken.None), Times.Once);
+        result.Should().NotBeNull();
+        result.Should().Be(projections[0]);
+    }
+
+    [Fact]
+    public async Task WithFilterAndProjectionAndCancellationToken_Projects()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var projections = Fixture.CreateMany<TestProjection>().ToList();
+        var token = new CancellationToken(true);
+        var (context, cursor) = SetupAsyncProjection(projections, collection);
+
+        // Act
+        var result = await Sut.ProjectOneAsync<TestDocument, TestProjection, Guid>(filter, projectionExpression, cancellationToken: token);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(null), Times.Once);
+        cursor.Verify(x => x.Current, Times.Once);
+        cursor.Verify(x => x.MoveNextAsync(token), Times.Once);
+        result.Should().NotBeNull();
+        result.Should().Be(projections[0]);
+    }
+
+    [Fact]
+    public async Task WithFilterAndProjectionAndPartitionKey_Projects()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var projections = Fixture.CreateMany<TestProjection>().ToList();
+        var partitionKey = Fixture.Create<string>();
+        var (context, cursor) = SetupAsyncProjection(projections, collection, partitionKey);
+
+        // Act
+        var result = await Sut.ProjectOneAsync<TestDocument, TestProjection, Guid>(filter, projectionExpression, partitionKey);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(partitionKey), Times.Once);
+        cursor.Verify(x => x.Current, Times.Once);
+        cursor.Verify(x => x.MoveNextAsync(CancellationToken.None), Times.Once);
+        result.Should().NotBeNull();
+        result.Should().Be(projections[0]);
+    }
+
+    [Fact]
+    public async Task WithFilterAndProjectionAndPartitionKeyAndCancellationToken_Projects()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var projections = Fixture.CreateMany<TestProjection>().ToList();
+        var partitionKey = Fixture.Create<string>();
+        var token = new CancellationToken(true);
+        var (context, cursor) = SetupAsyncProjection(projections, collection, partitionKey);
+
+        // Act
+        var result = await Sut.ProjectOneAsync<TestDocument, TestProjection, Guid>(filter, projectionExpression, partitionKey, token);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(partitionKey), Times.Once);
+        cursor.Verify(x => x.Current, Times.Once);
+        cursor.Verify(x => x.MoveNextAsync(token), Times.Once);
+        result.Should().NotBeNull();
+        result.Should().Be(projections[0]);
+    }
+
+    private (Mock<IMongoDbContext>, Mock<IAsyncCursor<TProjection>>) SetupAsyncProjection<TDocument, TProjection>(
+        List<TProjection> projections,
+        Mock<IMongoCollection<TDocument>> collection,
+        string partitionKey = null)
+    {
+        var asyncCursor = SetupAsyncCursor(projections);
+
+        SetupFindAsync(collection, asyncCursor);
+
+        var context = MockOf<IMongoDbContext>();
+
+        context
+            .Setup(x => x.GetCollection<TDocument>(partitionKey))
+            .Returns(collection.Object);
+
+        return (context, asyncCursor);
+    }
+}

CoreUnitTests/DataAccessTests/MongoDbReaderTests/ProjectOneTests.cs

@@ -0,0 +1,121 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Linq.Expressions;
+using System.Threading;
+using System.Threading.Tasks;
+using AutoFixture;
+using CoreUnitTests.Infrastructure.Model;
+using FluentAssertions;
+using MongoDB.Driver;
+using MongoDbGenericRepository;
+using Moq;
+using Xunit;
+
+namespace CoreUnitTests.DataAccessTests.MongoDbReaderTests;
+
+public class ProjectOneTests : BaseReaderTests
+{
+    private readonly Expression<Func<TestDocument, bool>> filter = t => string.IsNullOrWhiteSpace(t.SomeContent2);
+
+    private readonly Expression<Func<TestDocument, TestProjection>>
+        projectionExpression = t => new TestProjection {TestDocumentId = t.Id, NestedData = t.Nested.SomeDate};
+
+    [Fact]
+    public void WithFilterAndProjection_Projects()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var projections = Fixture.CreateMany<TestProjection>().ToList();
+        var (context, cursor) = SetupProjection(projections, collection);
+
+        // Act
+        var result = Sut.ProjectOne<TestDocument, TestProjection, Guid>(filter, projectionExpression);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(null), Times.Once);
+        cursor.Verify(x => x.Current, Times.Once);
+        cursor.Verify(x => x.MoveNext(CancellationToken.None), Times.Once);
+        result.Should().NotBeNull();
+        result.Should().Be(projections[0]);
+    }
+
+    [Fact]
+    public void WithFilterAndProjectionAndCancellationToken_Projects()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var projections = Fixture.CreateMany<TestProjection>().ToList();
+        var token = new CancellationToken(true);
+        var (context, cursor) = SetupProjection(projections, collection);
+
+        // Act
+        var result = Sut.ProjectOne<TestDocument, TestProjection, Guid>(filter, projectionExpression, cancellationToken: token);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(null), Times.Once);
+        cursor.Verify(x => x.Current, Times.Once);
+        cursor.Verify(x => x.MoveNext(token), Times.Once);
+        result.Should().NotBeNull();
+        result.Should().Be(projections[0]);
+    }
+
+    [Fact]
+    public void WithFilterAndProjectionAndPartitionKey_Projects()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var projections = Fixture.CreateMany<TestProjection>().ToList();
+        var partitionKey = Fixture.Create<string>();
+        var (context, cursor) = SetupProjection(projections, collection, partitionKey);
+
+        // Act
+        var result = Sut.ProjectOne<TestDocument, TestProjection, Guid>(filter, projectionExpression, partitionKey);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(partitionKey), Times.Once);
+        cursor.Verify(x => x.Current, Times.Once);
+        cursor.Verify(x => x.MoveNext(CancellationToken.None), Times.Once);
+        result.Should().NotBeNull();
+        result.Should().Be(projections[0]);
+    }
+
+    [Fact]
+    public void WithFilterAndProjectionAndPartitionKeyAndCancellationToken_Projects()
+    {
+        // Arrange
+        var collection = MockOf<IMongoCollection<TestDocument>>();
+        var projections = Fixture.CreateMany<TestProjection>().ToList();
+        var partitionKey = Fixture.Create<string>();
+        var token = new CancellationToken(true);
+        var (context, cursor) = SetupProjection(projections, collection, partitionKey);
+
+        // Act
+        var result = Sut.ProjectOne<TestDocument, TestProjection, Guid>(filter, projectionExpression, partitionKey, token);
+
+        // Assert
+        context.Verify(x => x.GetCollection<TestDocument>(partitionKey), Times.Once);
+        cursor.Verify(x => x.Current, Times.Once);
+        cursor.Verify(x => x.MoveNext(token), Times.Once);
+        result.Should().NotBeNull();
+        result.Should().Be(projections[0]);
+    }
+
+    private (Mock<IMongoDbContext>, Mock<IAsyncCursor<TProjection>>) SetupProjection<TDocument, TProjection>(
+        List<TProjection> projections,
+        Mock<IMongoCollection<TDocument>> collection,
+        string partitionKey = null)
+    {
+        var asyncCursor = SetupSyncCursor(projections);
+
+        SetupFindSync(collection, asyncCursor);
+
+        var context = MockOf<IMongoDbContext>();
+
+        context
+            .Setup(x => x.GetCollection<TDocument>(partitionKey))
+            .Returns(collection.Object);
+
+        return (context, asyncCursor);
+    }
+}

CoreUnitTests/Infrastructure/Model/TestProjection.cs

@@ -0,0 +1,10 @@
+using System;
+
+namespace CoreUnitTests.Infrastructure.Model;
+
+public class TestProjection
+{
+    public Guid TestDocumentId { get; set; }
+
+    public DateTime NestedData { get; set; }
+}

MongoDbGenericRepository/Abstractions/IMongoDbContext.cs

@@ -25,7 +25,7 @@ namespace MongoDbGenericRepository
         IMongoCollection<TDocument> GetCollection<TDocument>(string partitionKey = null);
 
         /// <summary>
-        /// Drops a collection having a partitionkey, use very carefully.
+        /// Drops a collection having a partitionKey, use very carefully.
         /// </summary>
         /// <typeparam name="TDocument"></typeparam>
         void DropCollection<TDocument>(string partitionKey = null);

MongoDbGenericRepository/DataAccess/Read/IMongoDbReader.cs

@@ -43,7 +43,7 @@ namespace MongoDbGenericRepository.DataAccess.Read
         /// <param name="filter">A LINQ expression filter.</param>
         /// <param name="projection">The projection expression.</param>
         /// <param name="partitionKey">An optional partition key.</param>
-        TProjection ProjectOne<TDocument, TProjection, TKey>(Expression<Func<TDocument, bool>> filter, Expression<Func<TDocument, TProjection>> projection, string partitionKey = null)
+        TProjection ProjectOne<TDocument, TProjection, TKey>(Expression<Func<TDocument, bool>> filter, Expression<Func<TDocument, TProjection>> projection, string partitionKey = null, CancellationToken cancellationToken = default)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>
             where TProjection : class;
@@ -76,7 +76,7 @@ namespace MongoDbGenericRepository.DataAccess.Read
         /// <param name="filter">The document filter.</param>
         /// <param name="projection">The projection expression.</param>
         /// <param name="partitionKey">An optional partition key.</param>
-        List<TProjection> ProjectMany<TDocument, TProjection, TKey>(Expression<Func<TDocument, bool>> filter, Expression<Func<TDocument, TProjection>> projection, string partitionKey = null)
+        List<TProjection> ProjectMany<TDocument, TProjection, TKey>(Expression<Func<TDocument, bool>> filter, Expression<Func<TDocument, TProjection>> projection, string partitionKey = null, CancellationToken cancellationToken = default)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>
             where TProjection : class;
@@ -95,7 +95,7 @@ namespace MongoDbGenericRepository.DataAccess.Read
         List<TProjection> GroupBy<TDocument, TGroupKey, TProjection, TKey>(
             Expression<Func<TDocument, TGroupKey>> groupingCriteria,
             Expression<Func<IGrouping<TGroupKey, TDocument>, TProjection>> groupProjection,
-            string partitionKey = null)
+            string partitionKey = null, CancellationToken cancellationToken = default)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>
             where TProjection : class, new();
@@ -116,7 +116,7 @@ namespace MongoDbGenericRepository.DataAccess.Read
             Expression<Func<TDocument, bool>> filter,
             Expression<Func<TDocument, TGroupKey>> selector,
             Expression<Func<IGrouping<TGroupKey, TDocument>, TProjection>> projection,
-            string partitionKey = null)
+            string partitionKey = null, CancellationToken cancellationToken = default)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>
             where TProjection : class, new();
@@ -207,7 +207,7 @@ namespace MongoDbGenericRepository.DataAccess.Read
         /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
         /// <param name="id">The Id of the document you want to get.</param>
         /// <param name="partitionKey">An optional partition key.</param>
-        TDocument GetById<TDocument, TKey>(TKey id, string partitionKey = null)
+        TDocument GetById<TDocument, TKey>(TKey id, string partitionKey = null, CancellationToken cancellationToken = default)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>;
 
@@ -246,7 +246,7 @@ namespace MongoDbGenericRepository.DataAccess.Read
         /// <param name="condition">A mongodb filter definition.</param>
         /// <param name="findOption">A mongodb filter option.</param>
         /// <param name="partitionKey">An optional partition key.</param>
-        TDocument GetOne<TDocument, TKey>(FilterDefinition<TDocument> condition, FindOptions findOption = null, string partitionKey = null)
+        TDocument GetOne<TDocument, TKey>(FilterDefinition<TDocument> condition, FindOptions findOption = null, string partitionKey = null, CancellationToken cancellationToken = default)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>;
 
@@ -257,7 +257,7 @@ namespace MongoDbGenericRepository.DataAccess.Read
         /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
         /// <param name="filter">A LINQ expression filter.</param>
         /// <param name="partitionKey">An optional partition key.</param>
-        TDocument GetOne<TDocument, TKey>(Expression<Func<TDocument, bool>> filter, string partitionKey = null)
+        TDocument GetOne<TDocument, TKey>(Expression<Func<TDocument, bool>> filter, string partitionKey = null, CancellationToken cancellationToken = default)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>;
 
@@ -307,7 +307,7 @@ namespace MongoDbGenericRepository.DataAccess.Read
         /// <param name="countOption">A mongodb counting option.</param>
         /// <param name="partitionKey">An optional partition key.</param>
         bool Any<TDocument, TKey>(FilterDefinition<TDocument> condition, CountOptions countOption = null,
-            string partitionKey = null)
+            string partitionKey = null, CancellationToken cancellationToken = default)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>;
 
@@ -318,7 +318,7 @@ namespace MongoDbGenericRepository.DataAccess.Read
         /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
         /// <param name="filter">A LINQ expression filter.</param>
         /// <param name="partitionKey">An optional partition key.</param>
-        bool Any<TDocument, TKey>(Expression<Func<TDocument, bool>> filter, string partitionKey = null)
+        bool Any<TDocument, TKey>(Expression<Func<TDocument, bool>> filter, string partitionKey = null, CancellationToken cancellationToken = default)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>;
 
@@ -357,7 +357,7 @@ namespace MongoDbGenericRepository.DataAccess.Read
         /// <param name="findOption">A mongodb filter option.</param>
         /// <param name="partitionKey">An optional partition key.</param>
         List<TDocument> GetAll<TDocument, TKey>(FilterDefinition<TDocument> condition, FindOptions findOption = null,
-            string partitionKey = null)
+            string partitionKey = null, CancellationToken cancellationToken = default)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>;
 
@@ -368,7 +368,7 @@ namespace MongoDbGenericRepository.DataAccess.Read
         /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
         /// <param name="filter">A LINQ expression filter.</param>
         /// <param name="partitionKey">An optional partition key.</param>
-        List<TDocument> GetAll<TDocument, TKey>(Expression<Func<TDocument, bool>> filter, string partitionKey = null)
+        List<TDocument> GetAll<TDocument, TKey>(Expression<Func<TDocument, bool>> filter, string partitionKey = null, CancellationToken cancellationToken = default)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>;
 
@@ -407,7 +407,7 @@ namespace MongoDbGenericRepository.DataAccess.Read
         /// <param name="countOption">A mongodb counting option.</param>
         /// <param name="partitionKey">An optional partitionKey</param>
         long Count<TDocument, TKey>(FilterDefinition<TDocument> condition, CountOptions countOption = null,
-            string partitionKey = null)
+            string partitionKey = null, CancellationToken cancellationToken = default)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>;
 
@@ -418,7 +418,7 @@ namespace MongoDbGenericRepository.DataAccess.Read
         /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
         /// <param name="filter">A LINQ expression filter.</param>
         /// <param name="partitionKey">An optional partitionKey</param>
-        long Count<TDocument, TKey>(Expression<Func<TDocument, bool>> filter, string partitionKey = null)
+        long Count<TDocument, TKey>(Expression<Func<TDocument, bool>> filter, string partitionKey = null, CancellationToken cancellationToken = default)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>;
 
@@ -443,7 +443,7 @@ namespace MongoDbGenericRepository.DataAccess.Read
         /// <param name="filter">A LINQ expression filter.</param>
         /// <param name="maxValueSelector">A property selector to order by descending.</param>
         /// <param name="partitionKey">An optional partitionKey.</param>
-        TDocument GetByMax<TDocument, TKey>(Expression<Func<TDocument, bool>> filter, Expression<Func<TDocument, object>> maxValueSelector, string partitionKey = null)
+        TDocument GetByMax<TDocument, TKey>(Expression<Func<TDocument, bool>> filter, Expression<Func<TDocument, object>> maxValueSelector, string partitionKey = null, CancellationToken cancellationToken = default)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>;
 
@@ -468,7 +468,7 @@ namespace MongoDbGenericRepository.DataAccess.Read
         /// <param name="filter">A LINQ expression filter.</param>
         /// <param name="minValueSelector">A property selector to order by ascending.</param>
         /// <param name="partitionKey">An optional partitionKey.</param>
-        TDocument GetByMin<TDocument, TKey>(Expression<Func<TDocument, bool>> filter, Expression<Func<TDocument, object>> minValueSelector, string partitionKey = null)
+        TDocument GetByMin<TDocument, TKey>(Expression<Func<TDocument, bool>> filter, Expression<Func<TDocument, object>> minValueSelector, string partitionKey = null, CancellationToken cancellationToken = default)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>;
 
@@ -495,7 +495,7 @@ namespace MongoDbGenericRepository.DataAccess.Read
         /// <param name="filter">A LINQ expression filter.</param>
         /// <param name="maxValueSelector">A property selector to order by ascending.</param>
         /// <param name="partitionKey">An optional partitionKey.</param>
-        TValue GetMaxValue<TDocument, TKey, TValue>(Expression<Func<TDocument, bool>> filter, Expression<Func<TDocument, TValue>> maxValueSelector, string partitionKey = null)
+        TValue GetMaxValue<TDocument, TKey, TValue>(Expression<Func<TDocument, bool>> filter, Expression<Func<TDocument, TValue>> maxValueSelector, string partitionKey = null, CancellationToken cancellationToken = default)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>;
 
@@ -522,7 +522,7 @@ namespace MongoDbGenericRepository.DataAccess.Read
         /// <param name="filter">A LINQ expression filter.</param>
         /// <param name="minValueSelector">A property selector to order by ascending.</param>
         /// <param name="partitionKey">An optional partition key.</param>
-        TValue GetMinValue<TDocument, TKey, TValue>(Expression<Func<TDocument, bool>> filter, Expression<Func<TDocument, TValue>> minValueSelector, string partitionKey = null)
+        TValue GetMinValue<TDocument, TKey, TValue>(Expression<Func<TDocument, bool>> filter, Expression<Func<TDocument, TValue>> minValueSelector, string partitionKey = null, CancellationToken cancellationToken = default)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>;
 

MongoDbGenericRepository/DataAccess/Read/MongoDbReader.GroupBy.cs

@@ -0,0 +1,108 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Linq.Expressions;
+using System.Threading;
+using System.Threading.Tasks;
+using MongoDB.Driver;
+using MongoDbGenericRepository.Models;
+
+namespace MongoDbGenericRepository.DataAccess.Read
+{
+    public partial class MongoDbReader
+    {
+        /// <inheritdoc />
+        public virtual List<TProjection> GroupBy<TDocument, TGroupKey, TProjection, TKey>(
+            Expression<Func<TDocument, TGroupKey>> groupingCriteria,
+            Expression<Func<IGrouping<TGroupKey, TDocument>, TProjection>> groupProjection,
+            string partitionKey = null, CancellationToken cancellationToken = default)
+            where TDocument : IDocument<TKey>
+            where TKey : IEquatable<TKey>
+            where TProjection : class, new()
+        {
+            return HandlePartitioned<TDocument, TKey>(partitionKey)
+                .Aggregate()
+                .Group(groupingCriteria, groupProjection)
+                .ToList(cancellationToken:cancellationToken);
+        }
+
+        /// <inheritdoc />
+        public virtual List<TProjection> GroupBy<TDocument, TGroupKey, TProjection, TKey>(
+            Expression<Func<TDocument, bool>> filter,
+            Expression<Func<TDocument, TGroupKey>> selector,
+            Expression<Func<IGrouping<TGroupKey, TDocument>, TProjection>> projection,
+            string partitionKey = null,
+            CancellationToken cancellationToken = default)
+            where TDocument : IDocument<TKey>
+            where TKey : IEquatable<TKey>
+            where TProjection : class, new()
+        {
+            var collection = HandlePartitioned<TDocument, TKey>(partitionKey);
+            return collection.Aggregate()
+                .Match(Builders<TDocument>.Filter.Where(filter))
+                .Group(selector, projection)
+                .ToList(cancellationToken);
+        }
+
+        /// <inheritdoc />
+        public virtual async Task<List<TProjection>> GroupByAsync<TDocument, TGroupKey, TProjection, TKey>(
+            Expression<Func<TDocument, bool>> filter,
+            Expression<Func<TDocument, TGroupKey>> selector,
+            Expression<Func<IGrouping<TGroupKey, TDocument>, TProjection>> projection,
+            string partitionKey = null,
+            CancellationToken cancellationToken = default)
+            where TDocument : IDocument<TKey>
+            where TKey : IEquatable<TKey>
+            where TProjection : class, new()
+        {
+            var collection = HandlePartitioned<TDocument, TKey>(partitionKey);
+            return await collection.Aggregate()
+                .Match(Builders<TDocument>.Filter.Where(filter))
+                .Group(selector, projection)
+                .ToListAsync(cancellationToken);
+        }
+
+        /// <inheritdoc />
+        public virtual async Task<List<TDocument>> GetSortedPaginatedAsync<TDocument, TKey>(
+            Expression<Func<TDocument, bool>> filter,
+            Expression<Func<TDocument, object>> sortSelector,
+            bool ascending = true,
+            int skipNumber = 0,
+            int takeNumber = 50,
+            string partitionKey = null,
+            CancellationToken cancellationToken = default)
+            where TDocument : IDocument<TKey>
+            where TKey : IEquatable<TKey>
+        {
+            var sorting = ascending
+                ? Builders<TDocument>.Sort.Ascending(sortSelector)
+                : Builders<TDocument>.Sort.Descending(sortSelector);
+
+            return await HandlePartitioned<TDocument, TKey>(partitionKey)
+                .Find(filter)
+                .Sort(sorting)
+                .Skip(skipNumber)
+                .Limit(takeNumber)
+                .ToListAsync(cancellationToken);
+        }
+
+        /// <inheritdoc />
+        public virtual async Task<List<TDocument>> GetSortedPaginatedAsync<TDocument, TKey>(
+            Expression<Func<TDocument, bool>> filter,
+            SortDefinition<TDocument> sortDefinition,
+            int skipNumber = 0,
+            int takeNumber = 50,
+            string partitionKey = null,
+            CancellationToken cancellationToken = default)
+            where TDocument : IDocument<TKey>
+            where TKey : IEquatable<TKey>
+        {
+            return await HandlePartitioned<TDocument, TKey>(partitionKey)
+                .Find(filter)
+                .Sort(sortDefinition)
+                .Skip(skipNumber)
+                .Limit(takeNumber)
+                .ToListAsync(cancellationToken);
+        }
+    }
+}

MongoDbGenericRepository/DataAccess/Read/MongoDbReader.Main.cs

@@ -1,39 +1,32 @@
-using MongoDB.Driver;
+using System;
-using MongoDB.Driver.Linq;
-using MongoDbGenericRepository.DataAccess.Base;
-using MongoDbGenericRepository.Models;
-using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Linq.Expressions;
 using System.Threading;
 using System.Threading.Tasks;
+using MongoDB.Driver;
+using MongoDB.Driver.Linq;
+using MongoDbGenericRepository.DataAccess.Base;
+using MongoDbGenericRepository.Models;
 
 namespace MongoDbGenericRepository.DataAccess.Read
 {
     /// <summary>
     ///     A class to read MongoDb document.
     /// </summary>
-    public partial class MongoDbReader : DataAccessBase
+    public partial class MongoDbReader : DataAccessBase, IMongoDbReader
     {
         /// <summary>
         ///     The construct of the MongoDbReader class.
         /// </summary>
-        /// <param name="mongoDbContext">A <see cref="IMongoDbContext"/> instance.</param>
+        /// <param name="mongoDbContext">A <see cref="IMongoDbContext" /> instance.</param>
         public MongoDbReader(IMongoDbContext mongoDbContext) : base(mongoDbContext)
         {
         }
 
         #region Read TKey
 
-        /// <summary>
+        /// <inheritdoc />
-        /// Asynchronously returns one document given its id.
-        /// </summary>
-        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
-        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
-        /// <param name="id">The Id of the document you want to get.</param>
-        /// <param name="partitionKey">An optional partition key.</param>
-        /// <param name="cancellationToken">An optional cancellation Token.</param>
         public virtual async Task<TDocument> GetByIdAsync<TDocument, TKey>(TKey id, string partitionKey = null, CancellationToken cancellationToken = default)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>
@@ -42,31 +35,19 @@ namespace MongoDbGenericRepository.DataAccess.Read
             return await HandlePartitioned<TDocument, TKey>(partitionKey).Find(filter).FirstOrDefaultAsync(cancellationToken);
         }
 
-        /// <summary>
+        /// <inheritdoc />
-        /// Returns one document given its id.
+        public virtual TDocument GetById<TDocument, TKey>(TKey id, string partitionKey = null, CancellationToken cancellationToken = default)
-        /// </summary>
-        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
-        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
-        /// <param name="id">The Id of the document you want to get.</param>
-        /// <param name="partitionKey">An optional partition key.</param>
-        public virtual TDocument GetById<TDocument, TKey>(TKey id, string partitionKey = null)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>
         {
             var filter = Builders<TDocument>.Filter.Eq("Id", id);
-            return HandlePartitioned<TDocument, TKey>(partitionKey).Find(filter).FirstOrDefault();
+            return HandlePartitioned<TDocument, TKey>(partitionKey).Find(filter).FirstOrDefault(cancellationToken);
         }
 
-        /// <summary>
+        /// <inheritdoc />
-        /// Asynchronously returns one document given filter definition.
+        public virtual Task<TDocument> GetOneAsync<TDocument, TKey>(
-        /// </summary>
+            FilterDefinition<TDocument> condition,
-        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
+            FindOptions findOption = null,
-        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
-        /// <param name="condition">A mongodb filter definition.</param>
-        /// <param name="findOption">A mongodb filter option.</param>
-        /// <param name="partitionKey">An optional partition key.</param>
-        /// <param name="cancellationToken">An optional cancellation Token.</param>
-        public virtual Task<TDocument> GetOneAsync<TDocument, TKey>(FilterDefinition<TDocument> condition, FindOptions findOption = null,
             string partitionKey = null,
             CancellationToken cancellationToken = default)
             where TDocument : IDocument<TKey>
@@ -75,57 +56,41 @@ namespace MongoDbGenericRepository.DataAccess.Read
             return HandlePartitioned<TDocument, TKey>(partitionKey).Find(condition, findOption).FirstOrDefaultAsync(cancellationToken);
         }
 
-        /// <summary>
+        /// <inheritdoc />
-        /// Returns one document given filter definition.
+        public virtual TDocument GetOne<TDocument, TKey>(
-        /// </summary>
+            FilterDefinition<TDocument> condition,
-        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
+            FindOptions findOption = null,
-        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
+            string partitionKey = null,
-        /// <param name="condition">A mongodb filter definition.</param>
+            CancellationToken cancellationToken = default)
-        /// <param name="findOption">A mongodb filter option.</param>
-        /// <param name="partitionKey">An optional partition key.</param>
-        public virtual TDocument GetOne<TDocument, TKey>(FilterDefinition<TDocument> condition, FindOptions findOption = null, string partitionKey = null)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>
         {
-            return HandlePartitioned<TDocument, TKey>(partitionKey).Find(condition, findOption).FirstOrDefault(); 
+            return HandlePartitioned<TDocument, TKey>(partitionKey).Find(condition, findOption).FirstOrDefault(cancellationToken);
         }
 
-        /// <summary>
+        /// <inheritdoc />
-        /// Asynchronously returns one document given an expression filter.
+        public virtual async Task<TDocument> GetOneAsync<TDocument, TKey>(
-        /// </summary>
+            Expression<Func<TDocument, bool>> filter,
-        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
+            string partitionKey = null,
-        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
+            CancellationToken cancellationToken = default)
-        /// <param name="filter">A LINQ expression filter.</param>
-        /// <param name="partitionKey">An optional partition key.</param>
-        /// <param name="cancellationToken">An optional cancellation Token.</param>
-        public virtual async Task<TDocument> GetOneAsync<TDocument, TKey>(Expression<Func<TDocument, bool>> filter, string partitionKey = null, CancellationToken cancellationToken = default)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>
         {
             return await HandlePartitioned<TDocument, TKey>(partitionKey).Find(filter).FirstOrDefaultAsync(cancellationToken);
         }
 
-        /// <summary>
+        /// <inheritdoc />
-        /// Returns one document given an expression filter.
+        public virtual TDocument GetOne<TDocument, TKey>(
-        /// </summary>
+            Expression<Func<TDocument, bool>> filter,
-        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
+            string partitionKey = null,
-        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
+            CancellationToken cancellationToken = default)
-        /// <param name="filter">A LINQ expression filter.</param>
-        /// <param name="partitionKey">An optional partition key.</param>
-        public virtual TDocument GetOne<TDocument, TKey>(Expression<Func<TDocument, bool>> filter, string partitionKey = null)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>
         {
-            return HandlePartitioned<TDocument, TKey>(partitionKey).Find(filter).FirstOrDefault();
+            return HandlePartitioned<TDocument, TKey>(partitionKey).Find(filter).FirstOrDefault(cancellationToken);
         }
 
-        /// <summary>
+        /// <inheritdoc />
-        /// Returns a collection cursor.
-        /// </summary>
-        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
-        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
-        /// <param name="filter">A LINQ expression filter.</param>
-        /// <param name="partitionKey">An optional partition key.</param>
         public virtual IFindFluent<TDocument, TDocument> GetCursor<TDocument, TKey>(Expression<Func<TDocument, bool>> filter, string partitionKey = null)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>
@@ -133,16 +98,11 @@ namespace MongoDbGenericRepository.DataAccess.Read
             return HandlePartitioned<TDocument, TKey>(partitionKey).Find(filter);
         }
 
-        /// <summary>
+        /// <inheritdoc />
-        /// Returns true if any of the document of the collection matches the filter condition.
+        public virtual async Task<bool> AnyAsync<TDocument, TKey>(
-        /// </summary>
+            FilterDefinition<TDocument> condition,
-        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
+            CountOptions countOption = null,
-        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
+            string partitionKey = null,
-        /// <param name="condition">A mongodb filter definition.</param>
-        /// <param name="countOption">A mongodb counting option.</param>
-        /// <param name="partitionKey">An optional partition key.</param>
-        /// <param name="cancellationToken">An optional cancellation Token.</param>
-        public virtual async Task<bool> AnyAsync<TDocument, TKey>(FilterDefinition<TDocument> condition, CountOptions countOption = null, string partitionKey = null,
             CancellationToken cancellationToken = default)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>
@@ -151,192 +111,145 @@ namespace MongoDbGenericRepository.DataAccess.Read
             return count > 0;
         }
 
-        /// <summary>
+        /// <inheritdoc />
-        /// Returns true if any of the document of the collection matches the filter condition.
+        public virtual bool Any<TDocument, TKey>(
-        /// </summary>
+            FilterDefinition<TDocument> condition,
-        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
+            CountOptions countOption = null,
-        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
+            string partitionKey = null,
-        /// <param name="condition">A mongodb filter definition.</param>
+            CancellationToken cancellationToken = default)
-        /// <param name="countOption">A mongodb counting option.</param>
-        /// <param name="partitionKey">An optional partition key.</param>
-        public virtual bool Any<TDocument, TKey>(FilterDefinition<TDocument> condition, CountOptions countOption = null,
-            string partitionKey = null)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>
         {
-            var count = HandlePartitioned<TDocument, TKey>(partitionKey).CountDocuments(condition, countOption);
+            var count = HandlePartitioned<TDocument, TKey>(partitionKey).CountDocuments(condition, countOption, cancellationToken);
             return count > 0;
         }
 
-        /// <summary>
+        /// <inheritdoc />
-        /// Returns true if any of the document of the collection matches the filter condition.
+        public virtual async Task<bool> AnyAsync<TDocument, TKey>(
-        /// </summary>
+            Expression<Func<TDocument, bool>> filter,
-        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
+            string partitionKey = null,
-        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
+            CancellationToken cancellationToken = default)
-        /// <param name="filter">A LINQ expression filter.</param>
-        /// <param name="partitionKey">An optional partition key.</param>
-        /// <param name="cancellationToken">An optional cancellation Token.</param>
-        public virtual async Task<bool> AnyAsync<TDocument, TKey>(Expression<Func<TDocument, bool>> filter, string partitionKey = null, CancellationToken cancellationToken = default)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>
         {
             var count = await HandlePartitioned<TDocument, TKey>(partitionKey).CountDocumentsAsync(filter, cancellationToken: cancellationToken);
-            return (count > 0);
+            return count > 0;
         }
 
-        /// <summary>
+        /// <inheritdoc />
-        /// Returns true if any of the document of the collection matches the filter condition.
+        public virtual bool Any<TDocument, TKey>(
-        /// </summary>
+            Expression<Func<TDocument, bool>> filter,
-        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
+            string partitionKey = null,
-        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
+            CancellationToken cancellationToken = default)
-        /// <param name="filter">A LINQ expression filter.</param>
-        /// <param name="partitionKey">An optional partition key.</param>
-        public virtual bool Any<TDocument, TKey>(Expression<Func<TDocument, bool>> filter, string partitionKey = null)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>
         {
-            var count = HandlePartitioned<TDocument, TKey>(partitionKey).CountDocuments(filter);
+            var count = HandlePartitioned<TDocument, TKey>(partitionKey).CountDocuments(filter, cancellationToken: cancellationToken);
-            return (count > 0);
+            return count > 0;
         }
 
-        /// <summary>
+        /// <inheritdoc />
-        /// Asynchronously returns a list of the documents matching the filter condition.
+        public virtual Task<List<TDocument>> GetAllAsync<TDocument, TKey>(
-        /// </summary>
+            FilterDefinition<TDocument> condition,
-        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
+            FindOptions findOption = null,
-        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
+            string partitionKey = null,
-        /// <param name="condition">A mongodb filter definition.</param>
+            CancellationToken cancellationToken = default)
-        /// <param name="findOption">A mongodb filter option.</param>
-        /// <param name="partitionKey">An optional partition key.</param>
-        /// <param name="cancellationToken">An optional cancellation Token.</param>
-        public virtual Task<List<TDocument>> GetAllAsync<TDocument, TKey>(FilterDefinition<TDocument> condition,
-            FindOptions findOption = null, string partitionKey = null, CancellationToken cancellationToken = default)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>
         {
             return HandlePartitioned<TDocument, TKey>(partitionKey).Find(condition, findOption).ToListAsync(cancellationToken);
         }
 
-        /// <summary>
+        /// <inheritdoc />
-        /// Returns a list of the documents matching the filter condition.
+        public virtual List<TDocument> GetAll<TDocument, TKey>(
-        /// </summary>
+            FilterDefinition<TDocument> condition,
-        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
+            FindOptions findOption = null,
-        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
+            string partitionKey = null,
-        /// <param name="condition">A mongodb filter definition.</param>
+            CancellationToken cancellationToken = default)
-        /// <param name="findOption">A mongodb filter option.</param>
-        /// <param name="partitionKey">An optional partition key.</param>
-        public virtual List<TDocument> GetAll<TDocument, TKey>(FilterDefinition<TDocument> condition, FindOptions findOption = null,
-            string partitionKey = null)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>
         {
-            return HandlePartitioned<TDocument, TKey>(partitionKey).Find(condition, findOption).ToList();
+            return HandlePartitioned<TDocument, TKey>(partitionKey).Find(condition, findOption).ToList(cancellationToken);
         }
 
-        /// <summary>
+        /// <inheritdoc />
-        /// Asynchronously returns a list of the documents matching the filter condition.
+        public virtual async Task<List<TDocument>> GetAllAsync<TDocument, TKey>(
-        /// </summary>
+            Expression<Func<TDocument, bool>> filter,
-        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
+            string partitionKey = null,
-        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
+            CancellationToken cancellationToken = default)
-        /// <param name="filter">A LINQ expression filter.</param>
-        /// <param name="partitionKey">An optional partition key.</param>
-        /// <param name="cancellationToken">An optional cancellation Token.</param>
-        public virtual async Task<List<TDocument>> GetAllAsync<TDocument, TKey>(Expression<Func<TDocument, bool>> filter, string partitionKey = null, CancellationToken cancellationToken = default)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>
         {
             return await HandlePartitioned<TDocument, TKey>(partitionKey).Find(filter).ToListAsync(cancellationToken);
         }
 
-        /// <summary>
+        /// <inheritdoc />
-        /// Returns a list of the documents matching the filter condition.
+        public virtual List<TDocument> GetAll<TDocument, TKey>(
-        /// </summary>
+            Expression<Func<TDocument, bool>> filter,
-        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
+            string partitionKey = null,
-        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
+            CancellationToken cancellationToken = default)
-        /// <param name="filter">A LINQ expression filter.</param>
-        /// <param name="partitionKey">An optional partition key.</param>
-        public virtual List<TDocument> GetAll<TDocument, TKey>(Expression<Func<TDocument, bool>> filter, string partitionKey = null)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>
         {
-            return HandlePartitioned<TDocument, TKey>(partitionKey).Find(filter).ToList();
+            return HandlePartitioned<TDocument, TKey>(partitionKey).Find(filter).ToList(cancellationToken);
         }
 
-        /// <summary>
+        /// <inheritdoc />
-        /// Asynchronously counts how many documents match the filter condition.
+        public virtual Task<long> CountAsync<TDocument, TKey>(
-        /// </summary>
+            FilterDefinition<TDocument> condition,
-        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
+            CountOptions countOption = null,
-        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
+            string partitionKey = null,
-        /// <param name="condition">A mongodb filter definition.</param>
+            CancellationToken cancellationToken = default)
-        /// <param name="countOption">A mongodb counting option.</param>
-        /// <param name="partitionKey">An optional partitionKey</param>
-        /// <param name="cancellationToken">An optional cancellation Token.</param>
-        public virtual Task<long> CountAsync<TDocument, TKey>(FilterDefinition<TDocument> condition, CountOptions countOption = null,
-            string partitionKey = null, CancellationToken cancellationToken = default)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>
         {
             return HandlePartitioned<TDocument, TKey>(partitionKey).CountDocumentsAsync(condition, countOption, cancellationToken);
         }
 
-        /// <summary>
+        /// <inheritdoc />
-        /// Counts how many documents match the filter condition.
+        public virtual long Count<TDocument, TKey>(
-        /// </summary>
+            FilterDefinition<TDocument> condition,
-        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
+            CountOptions countOption = null,
-        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
+            string partitionKey = null,
-        /// <param name="condition">A mongodb filter definition.</param>
+            CancellationToken cancellationToken = default)
-        /// <param name="countOption">A mongodb counting option.</param>
-        /// <param name="partitionKey">An optional partitionKey</param>
-        public virtual long Count<TDocument, TKey>(FilterDefinition<TDocument> condition, CountOptions countOption = null,
-            string partitionKey = null)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>
         {
-            return HandlePartitioned<TDocument, TKey>(partitionKey).CountDocuments(condition, countOption);
+            return HandlePartitioned<TDocument, TKey>(partitionKey).CountDocuments(condition, countOption, cancellationToken);
         }
 
-        /// <summary>
+        /// <inheritdoc />
-        /// Asynchronously counts how many documents match the filter condition.
+        public virtual async Task<long> CountAsync<TDocument, TKey>(
-        /// </summary>
+            Expression<Func<TDocument, bool>> filter,
-        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
+            string partitionKey = null,
-        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
+            CancellationToken cancellationToken = default)
-        /// <param name="filter">A LINQ expression filter.</param>
-        /// <param name="partitionKey">An optional partitionKey</param>
-        /// <param name="cancellationToken">An optional cancellation Token.</param>
-        public virtual async Task<long> CountAsync<TDocument, TKey>(Expression<Func<TDocument, bool>> filter, string partitionKey = null, CancellationToken cancellationToken = default)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>
         {
             return await HandlePartitioned<TDocument, TKey>(partitionKey).CountDocumentsAsync(filter, cancellationToken: cancellationToken);
         }
 
-        /// <summary>
+        /// <inheritdoc />
-        /// Counts how many documents match the filter condition.
+        public virtual long Count<TDocument, TKey>(
-        /// </summary>
+            Expression<Func<TDocument, bool>> filter,
-        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
+            string partitionKey = null,
-        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
+            CancellationToken cancellationToken = default)
-        /// <param name="filter">A LINQ expression filter.</param>
-        /// <param name="partitionKey">An optional partitionKey</param>
-        public virtual long Count<TDocument, TKey>(Expression<Func<TDocument, bool>> filter, string partitionKey = null)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>
         {
-            return HandlePartitioned<TDocument, TKey>(partitionKey).Find(filter).CountDocuments();
+            return HandlePartitioned<TDocument, TKey>(partitionKey).Find(filter).CountDocuments(cancellationToken);
         }
 
         #endregion
 
         #region Min / Max
 
-        /// <summary>
+        /// <inheritdoc />
-        /// Gets the document with the maximum value of a specified property in a MongoDB collections that is satisfying the filter.
+        public virtual async Task<TDocument> GetByMaxAsync<TDocument, TKey>(
-        /// </summary>
+            Expression<Func<TDocument, bool>> filter,
-        /// <typeparam name="TDocument">The document type.</typeparam>
+            Expression<Func<TDocument, object>> maxValueSelector,
-        /// <typeparam name="TKey">The type of the primary key.</typeparam>
+            string partitionKey = null,
-        /// <param name="filter">A LINQ expression filter.</param>
+            CancellationToken cancellationToken = default)
-        /// <param name="maxValueSelector">A property selector to order by descending.</param>
-        /// <param name="partitionKey">An optional partitionKey.</param>
-        /// <param name="cancellationToken">An optional cancellation Token.</param>
-        public virtual async Task<TDocument> GetByMaxAsync<TDocument, TKey>(Expression<Func<TDocument, bool>> filter, Expression<Func<TDocument, object>> maxValueSelector, string partitionKey = null, CancellationToken cancellationToken = default)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>
         {
@@ -346,34 +259,27 @@ namespace MongoDbGenericRepository.DataAccess.Read
                 .FirstOrDefaultAsync(cancellationToken);
         }
 
-        /// <summary>
+        /// <inheritdoc />
-        /// Gets the document with the maximum value of a specified property in a MongoDB collections that is satisfying the filter.
+        public virtual TDocument GetByMax<TDocument, TKey>(
-        /// </summary>
+            Expression<Func<TDocument, bool>> filter,
-        /// <typeparam name="TDocument">The document type.</typeparam>
+            Expression<Func<TDocument, object>> maxValueSelector,
-        /// <typeparam name="TKey">The type of the primary key.</typeparam>
+            string partitionKey = null,
-        /// <param name="filter">A LINQ expression filter.</param>
+            CancellationToken cancellationToken = default)
-        /// <param name="maxValueSelector">A property selector to order by descending.</param>
-        /// <param name="partitionKey">An optional partitionKey.</param>
-        public virtual TDocument GetByMax<TDocument, TKey>(Expression<Func<TDocument, bool>> filter, Expression<Func<TDocument, object>> maxValueSelector, string partitionKey = null)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>
         {
             return GetCollection<TDocument, TKey>(partitionKey).Find(Builders<TDocument>.Filter.Where(filter))
                 .SortByDescending(maxValueSelector)
                 .Limit(1)
-                                                               .FirstOrDefault();
+                .FirstOrDefault(cancellationToken);
         }
 
-        /// <summary>
+        /// <inheritdoc />
-        /// Gets the document with the minimum value of a specified property in a MongoDB collections that is satisfying the filter.
+        public virtual async Task<TDocument> GetByMinAsync<TDocument, TKey>(
-        /// </summary>
+            Expression<Func<TDocument, bool>> filter,
-        /// <typeparam name="TDocument">The document type.</typeparam>
+            Expression<Func<TDocument, object>> minValueSelector,
-        /// <typeparam name="TKey">The type of the primary key.</typeparam>
+            string partitionKey = null,
-        /// <param name="filter">A LINQ expression filter.</param>
+            CancellationToken cancellationToken = default)
-        /// <param name="minValueSelector">A property selector to order by ascending.</param>
-        /// <param name="partitionKey">An optional partitionKey.</param>
-        /// <param name="cancellationToken">An optional cancellation Token.</param>
-        public virtual async Task<TDocument> GetByMinAsync<TDocument, TKey>(Expression<Func<TDocument, bool>> filter, Expression<Func<TDocument, object>> minValueSelector, string partitionKey = null, CancellationToken cancellationToken = default)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>
         {
@@ -383,35 +289,27 @@ namespace MongoDbGenericRepository.DataAccess.Read
                 .FirstOrDefaultAsync(cancellationToken);
         }
 
-        /// <summary>
+        /// <inheritdoc />
-        /// Gets the document with the minimum value of a specified property in a MongoDB collections that is satisfying the filter.
+        public virtual TDocument GetByMin<TDocument, TKey>(
-        /// </summary>
+            Expression<Func<TDocument, bool>> filter,
-        /// <typeparam name="TDocument">The document type.</typeparam>
+            Expression<Func<TDocument, object>> minValueSelector,
-        /// <typeparam name="TKey">The type of the primary key.</typeparam>
+            string partitionKey = null,
-        /// <param name="filter">A LINQ expression filter.</param>
+            CancellationToken cancellationToken = default)
-        /// <param name="minValueSelector">A property selector to order by ascending.</param>
-        /// <param name="partitionKey">An optional partitionKey.</param>
-        public virtual TDocument GetByMin<TDocument, TKey>(Expression<Func<TDocument, bool>> filter, Expression<Func<TDocument, object>> minValueSelector, string partitionKey = null)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>
         {
             return GetCollection<TDocument, TKey>(partitionKey).Find(Builders<TDocument>.Filter.Where(filter))
                 .SortBy(minValueSelector)
                 .Limit(1)
-                                                               .FirstOrDefault();
+                .FirstOrDefault(cancellationToken);
         }
 
-        /// <summary>
+        /// <inheritdoc />
-        /// Gets the maximum value of a property in a mongodb collections that is satisfying the filter.
+        public virtual async Task<TValue> GetMaxValueAsync<TDocument, TKey, TValue>(
-        /// </summary>
+            Expression<Func<TDocument, bool>> filter,
-        /// <typeparam name="TDocument">The document type.</typeparam>
+            Expression<Func<TDocument, TValue>> maxValueSelector,
-        /// <typeparam name="TKey">The type of the primary key.</typeparam>
+            string partitionKey = null,
-        /// <typeparam name="TValue">The type of the field for which you want the maximum value.</typeparam>
+            CancellationToken cancellationToken = default)
-        /// <param name="filter">A LINQ expression filter.</param>
-        /// <param name="maxValueSelector">A property selector to order by ascending.</param>
-        /// <param name="partitionKey">An optional partitionKey.</param>
-        /// <param name="cancellationToken">An optional cancellation Token.</param>
-        public virtual async Task<TValue> GetMaxValueAsync<TDocument, TKey, TValue>(Expression<Func<TDocument, bool>> filter, Expression<Func<TDocument, TValue>> maxValueSelector, string partitionKey = null, CancellationToken cancellationToken = default)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>
         {
@@ -420,72 +318,53 @@ namespace MongoDbGenericRepository.DataAccess.Read
                 .FirstOrDefaultAsync(cancellationToken);
         }
 
-        /// <summary>
+        /// <inheritdoc />
-        /// Gets the maximum value of a property in a mongodb collections that is satisfying the filter.
+        public virtual TValue GetMaxValue<TDocument, TKey, TValue>(
-        /// </summary>
+            Expression<Func<TDocument, bool>> filter,
-        /// <typeparam name="TDocument">The document type.</typeparam>
+            Expression<Func<TDocument, TValue>> maxValueSelector,
-        /// <typeparam name="TKey">The type of the primary key.</typeparam>
+            string partitionKey = null,
-        /// <typeparam name="TValue">The type of the value used to order the query.</typeparam>
+            CancellationToken cancellationToken = default)
-        /// <param name="filter">A LINQ expression filter.</param>
-        /// <param name="maxValueSelector">A property selector to order by ascending.</param>
-        /// <param name="partitionKey">An optional partitionKey.</param>
-        public virtual TValue GetMaxValue<TDocument, TKey, TValue>(Expression<Func<TDocument, bool>> filter, Expression<Func<TDocument, TValue>> maxValueSelector, string partitionKey = null)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>
         {
             return GetMaxMongoQuery<TDocument, TKey, TValue>(filter, maxValueSelector, partitionKey)
                 .Project(maxValueSelector)
-                      .FirstOrDefault();
+                .FirstOrDefault(cancellationToken);
         }
 
-        /// <summary>
+        /// <inheritdoc />
-        /// Gets the minimum value of a property in a mongodb collections that is satisfying the filter.
+        public virtual async Task<TValue> GetMinValueAsync<TDocument, TKey, TValue>(
-        /// </summary>
+            Expression<Func<TDocument, bool>> filter,
-        /// <typeparam name="TDocument">The document type.</typeparam>
+            Expression<Func<TDocument, TValue>> minValueSelector,
-        /// <typeparam name="TKey">The type of the primary key.</typeparam>
+            string partitionKey = null,
-        /// <typeparam name="TValue">The type of the value used to order the query.</typeparam>
+            CancellationToken cancellationToken = default)
-        /// <param name="filter">A LINQ expression filter.</param>
-        /// <param name="minValueSelector">A property selector to order by ascending.</param>
-        /// <param name="partitionKey">An optional partition key.</param>
-        /// <param name="cancellationToken">An optional cancellation Token.</param>
-        public virtual async Task<TValue> GetMinValueAsync<TDocument, TKey, TValue>(Expression<Func<TDocument, bool>> filter, Expression<Func<TDocument, TValue>> minValueSelector, string partitionKey = null, CancellationToken cancellationToken = default)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>
         {
-            return await GetMinMongoQuery<TDocument, TKey, TValue>(filter, minValueSelector, partitionKey).Project(minValueSelector).FirstOrDefaultAsync(cancellationToken);
+            return await GetMinMongoQuery<TDocument, TKey, TValue>(filter, minValueSelector, partitionKey).Project(minValueSelector)
+                .FirstOrDefaultAsync(cancellationToken);
         }
 
-        /// <summary>
+        /// <inheritdoc />
-        /// Gets the minimum value of a property in a mongodb collections that is satisfying the filter.
+        public virtual TValue GetMinValue<TDocument, TKey, TValue>(
-        /// </summary>
+            Expression<Func<TDocument, bool>> filter,
-        /// <typeparam name="TDocument">The document type.</typeparam>
+            Expression<Func<TDocument, TValue>> minValueSelector,
-        /// <typeparam name="TKey">The type of the primary key.</typeparam>
+            string partitionKey = null,
-        /// <typeparam name="TValue">The type of the value used to order the query.</typeparam>
+            CancellationToken cancellationToken = default)
-        /// <param name="filter">A LINQ expression filter.</param>
-        /// <param name="minValueSelector">A property selector to order by ascending.</param>
-        /// <param name="partitionKey">An optional partition key.</param>
-        public virtual TValue GetMinValue<TDocument, TKey, TValue>(Expression<Func<TDocument, bool>> filter, Expression<Func<TDocument, TValue>> minValueSelector, string partitionKey = null)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>
         {
-            return GetMinMongoQuery<TDocument, TKey, TValue>(filter, minValueSelector, partitionKey).Project(minValueSelector).FirstOrDefault();
+            return GetMinMongoQuery<TDocument, TKey, TValue>(filter, minValueSelector, partitionKey).Project(minValueSelector)
+                .FirstOrDefault(cancellationToken);
         }
 
-
         #endregion Min / Max
 
         #region Sum TKey
 
-        /// <summary>
+        /// <inheritdoc />
-        /// Sums the values of a selected field for a given filtered collection of documents.
+        public virtual async Task<int> SumByAsync<TDocument, TKey>(
-        /// </summary>
+            Expression<Func<TDocument, bool>> filter,
-        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
-        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
-        /// <param name="filter">A LINQ expression filter.</param>
-        /// <param name="selector">The field you want to sum.</param>
-        /// <param name="partitionKey">The partition key of your document, if any.</param>
-        /// <param name="cancellationToken">An optional cancellation Token.</param>
-        public virtual async Task<int> SumByAsync<TDocument, TKey>(Expression<Func<TDocument, bool>> filter,
             Expression<Func<TDocument, int>> selector,
             string partitionKey = null,
             CancellationToken cancellationToken = default)
@@ -495,15 +374,9 @@ namespace MongoDbGenericRepository.DataAccess.Read
             return await GetQuery<TDocument, TKey>(filter, partitionKey).SumAsync(selector, cancellationToken);
         }
 
-        /// <summary>
+        /// <inheritdoc />
-        /// Sums the values of a selected field for a given filtered collection of documents.
+        public virtual int SumBy<TDocument, TKey>(
-        /// </summary>
+            Expression<Func<TDocument, bool>> filter,
-        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
-        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
-        /// <param name="filter">A LINQ expression filter.</param>
-        /// <param name="selector">The field you want to sum.</param>
-        /// <param name="partitionKey">The partition key of your document, if any.</param>
-        public virtual int SumBy<TDocument, TKey>(Expression<Func<TDocument, bool>> filter,
             Expression<Func<TDocument, int>> selector,
             string partitionKey = null)
             where TDocument : IDocument<TKey>
@@ -512,33 +385,21 @@ namespace MongoDbGenericRepository.DataAccess.Read
             return GetQuery<TDocument, TKey>(filter, partitionKey).Sum(selector);
         }
 
-        /// <summary>
+        /// <inheritdoc />
-        /// Sums the values of a selected field for a given filtered collection of documents.
+        public virtual async Task<decimal> SumByAsync<TDocument, TKey>(
-        /// </summary>
+            Expression<Func<TDocument, bool>> filter,
-        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
-        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
-        /// <param name="filter">A LINQ expression filter.</param>
-        /// <param name="selector">The field you want to sum.</param>
-        /// <param name="partitionKey">The partition key of your document, if any.</param>
-        /// <param name="cancellationToken">An optional cancellation Token.</param>
-        public virtual async Task<decimal> SumByAsync<TDocument, TKey>(Expression<Func<TDocument, bool>> filter,
             Expression<Func<TDocument, decimal>> selector,
-                                                       string partitionKey = null, CancellationToken cancellationToken = default)
+            string partitionKey = null,
+            CancellationToken cancellationToken = default)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>
         {
             return await GetQuery<TDocument, TKey>(filter, partitionKey).SumAsync(selector, cancellationToken);
         }
 
-        /// <summary>
+        /// <inheritdoc />
-        /// Sums the values of a selected field for a given filtered collection of documents.
+        public virtual decimal SumBy<TDocument, TKey>(
-        /// </summary>
+            Expression<Func<TDocument, bool>> filter,
-        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
-        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
-        /// <param name="filter">A LINQ expression filter.</param>
-        /// <param name="selector">The field you want to sum.</param>
-        /// <param name="partitionKey">The partition key of your document, if any.</param>
-        public virtual decimal SumBy<TDocument, TKey>(Expression<Func<TDocument, bool>> filter,
             Expression<Func<TDocument, decimal>> selector,
             string partitionKey = null)
             where TDocument : IDocument<TKey>
@@ -549,155 +410,4 @@ namespace MongoDbGenericRepository.DataAccess.Read
 
         #endregion Sum TKey
     }
-
-    public partial class MongoDbReader
-    {
-        /// <summary>
-        /// Groups a collection of documents given a grouping criteria, 
-        /// and returns a dictionary of listed document groups with keys having the different values of the grouping criteria.
-        /// </summary>
-        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
-        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
-        /// <typeparam name="TGroupKey">The type of the grouping criteria.</typeparam>
-        /// <typeparam name="TProjection">The type of the projected group.</typeparam>
-        /// <param name="groupingCriteria">The grouping criteria.</param>
-        /// <param name="groupProjection">The projected group result.</param>
-        /// <param name="partitionKey">The partition key of your document, if any.</param>
-        public virtual List<TProjection> GroupBy<TDocument, TGroupKey, TProjection, TKey>(
-            Expression<Func<TDocument, TGroupKey>> groupingCriteria,
-            Expression<Func<IGrouping<TGroupKey, TDocument>, TProjection>> groupProjection,
-            string partitionKey = null)
-            where TDocument : IDocument<TKey>
-            where TKey : IEquatable<TKey>
-            where TProjection : class, new()
-        {
-            return HandlePartitioned<TDocument, TKey>(partitionKey)
-                             .Aggregate()
-                             .Group(groupingCriteria, groupProjection)
-                             .ToList();
-
-        }
-
-        /// <summary>
-        /// Groups filtered a collection of documents given a grouping criteria, 
-        /// and returns a dictionary of listed document groups with keys having the different values of the grouping criteria.
-        /// </summary>
-        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
-        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
-        /// <typeparam name="TGroupKey">The type of the grouping criteria.</typeparam>
-        /// <typeparam name="TProjection">The type of the projected group.</typeparam>
-        /// <param name="filter">A LINQ expression filter.</param>
-        /// <param name="selector">The grouping criteria.</param>
-        /// <param name="projection">The projected group result.</param>
-        /// <param name="partitionKey">The partition key of your document, if any.</param>
-        public virtual List<TProjection> GroupBy<TDocument, TGroupKey, TProjection, TKey>(
-            Expression<Func<TDocument, bool>> filter,
-            Expression<Func<TDocument, TGroupKey>> selector,
-            Expression<Func<IGrouping<TGroupKey, TDocument>, TProjection>> projection,
-            string partitionKey = null)
-                where TDocument : IDocument<TKey>
-                where TKey : IEquatable<TKey>
-                where TProjection : class, new()
-        {
-            var collection = HandlePartitioned<TDocument, TKey>(partitionKey);
-            return collection.Aggregate()
-                             .Match(Builders<TDocument>.Filter.Where(filter))
-                             .Group(selector, projection)
-                             .ToList();
-        }
-
-        /// <summary>
-        /// Groups filtered a collection of documents given a grouping criteria, 
-        /// and returns a dictionary of listed document groups with keys having the different values of the grouping criteria.
-        /// </summary>
-        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
-        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
-        /// <typeparam name="TGroupKey">The type of the grouping criteria.</typeparam>
-        /// <typeparam name="TProjection">The type of the projected group.</typeparam>
-        /// <param name="filter">A LINQ expression filter.</param>
-        /// <param name="selector">The grouping criteria.</param>
-        /// <param name="projection">The projected group result.</param>
-        /// <param name="partitionKey">The partition key of your document, if any.</param>
-        /// <param name="cancellationToken">An optional cancellation Token.</param>
-        public virtual async Task<List<TProjection>> GroupByAsync<TDocument, TGroupKey, TProjection, TKey>(
-            Expression<Func<TDocument, bool>> filter,
-            Expression<Func<TDocument, TGroupKey>> selector,
-            Expression<Func<IGrouping<TGroupKey, TDocument>, TProjection>> projection,
-            string partitionKey = null,
-            CancellationToken cancellationToken = default)
-                where TDocument : IDocument<TKey>
-                where TKey : IEquatable<TKey>
-                where TProjection : class, new()
-        {
-            var collection = HandlePartitioned<TDocument, TKey>(partitionKey);
-            return await collection.Aggregate()
-                             .Match(Builders<TDocument>.Filter.Where(filter))
-                             .Group(selector, projection)
-                             .ToListAsync(cancellationToken);
-        }
-
-        /// <summary>
-        /// Asynchronously returns a paginated list of the documents matching the filter condition.
-        /// </summary>
-        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
-        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
-        /// <param name="filter">A LINQ expression filter.</param>
-        /// <param name="sortSelector">The property selector.</param>
-        /// <param name="ascending">Order of the sorting.</param>
-        /// <param name="skipNumber">The number of documents you want to skip. Default value is 0.</param>
-        /// <param name="takeNumber">The number of documents you want to take. Default value is 50.</param>
-        /// <param name="partitionKey">An optional partition key.</param>
-        /// <param name="cancellationToken">An optional cancellation Token.</param>
-        public virtual async Task<List<TDocument>> GetSortedPaginatedAsync<TDocument, TKey>(
-            Expression<Func<TDocument, bool>> filter,
-            Expression<Func<TDocument, object>> sortSelector,
-            bool ascending = true,
-            int skipNumber = 0,
-            int takeNumber = 50,
-            string partitionKey = null,
-            CancellationToken cancellationToken = default)
-            where TDocument : IDocument<TKey>
-            where TKey : IEquatable<TKey>
-        {
-            var sorting = ascending
-                ? Builders<TDocument>.Sort.Ascending(sortSelector)
-                : Builders<TDocument>.Sort.Descending(sortSelector);
-
-            return await HandlePartitioned<TDocument, TKey>(partitionKey)
-                                    .Find(filter)
-                                    .Sort(sorting)
-                                    .Skip(skipNumber)
-                                    .Limit(takeNumber)
-                                    .ToListAsync(cancellationToken);
-        }
-
-        /// <summary>
-        /// Asynchronously returns a paginated list of the documents matching the filter condition.
-        /// </summary>
-        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
-        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
-        /// <param name="filter">A LINQ expression filter.</param>
-        /// <param name="sortDefinition">The sort definition.</param>
-        /// <param name="skipNumber">The number of documents you want to skip. Default value is 0.</param>
-        /// <param name="takeNumber">The number of documents you want to take. Default value is 50.</param>
-        /// <param name="partitionKey">An optional partition key.</param>
-        /// <param name="cancellationToken">An optional cancellation Token.</param>
-        public virtual async Task<List<TDocument>> GetSortedPaginatedAsync<TDocument, TKey>(
-            Expression<Func<TDocument, bool>> filter,
-            SortDefinition<TDocument> sortDefinition,
-            int skipNumber = 0,
-            int takeNumber = 50,
-            string partitionKey = null,
-            CancellationToken cancellationToken = default)
-            where TDocument : IDocument<TKey>
-            where TKey : IEquatable<TKey>
-        {
-            return await HandlePartitioned<TDocument, TKey>(partitionKey)
-                                    .Find(filter)
-                                    .Sort(sortDefinition)
-                                    .Skip(skipNumber)
-                                    .Limit(takeNumber)
-                                    .ToListAsync(cancellationToken);
-        }
-    }
 }

MongoDbGenericRepository/DataAccess/Read/MongoDbReader.Project.cs

@@ -1,27 +1,16 @@
-using MongoDB.Driver;
+using System;
-using MongoDB.Driver.Linq;
-using MongoDbGenericRepository.Models;
-using System;
 using System.Collections.Generic;
-using System.Linq;
 using System.Linq.Expressions;
 using System.Threading;
 using System.Threading.Tasks;
+using MongoDB.Driver;
+using MongoDbGenericRepository.Models;
 
 namespace MongoDbGenericRepository.DataAccess.Read
 {
-    public partial class MongoDbReader : IMongoDbReader
+    public partial class MongoDbReader
     {
-        /// <summary>
+        /// <inheritdoc />
-        /// Asynchronously returns a projected document matching the filter condition.
-        /// </summary>
-        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
-        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
-        /// <typeparam name="TProjection">The type representing the model you want to project to.</typeparam>
-        /// <param name="filter">A LINQ expression filter.</param>
-        /// <param name="projection">The projection expression.</param>
-        /// <param name="partitionKey">An optional partition key.</param>
-        /// <param name="cancellationToken">An optional cancellation Token.</param>
         public virtual async Task<TProjection> ProjectOneAsync<TDocument, TProjection, TKey>(
             Expression<Func<TDocument, bool>> filter,
             Expression<Func<TDocument, TProjection>> projection,
@@ -31,40 +20,13 @@ namespace MongoDbGenericRepository.DataAccess.Read
             where TKey : IEquatable<TKey>
             where TProjection : class
         {
-            return await HandlePartitioned<TDocument, TKey>(partitionKey).Find(filter)
+            return await HandlePartitioned<TDocument, TKey>(partitionKey)
+                .Find(filter)
                 .Project(projection)
                 .FirstOrDefaultAsync(cancellationToken);
         }
 
-        /// <summary>
+        /// <inheritdoc />
-        /// Returns a projected document matching the filter condition.
-        /// </summary>
-        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
-        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
-        /// <typeparam name="TProjection">The type representing the model you want to project to.</typeparam>
-        /// <param name="filter">A LINQ expression filter.</param>
-        /// <param name="projection">The projection expression.</param>
-        /// <param name="partitionKey">An optional partition key.</param>
-        public virtual TProjection ProjectOne<TDocument, TProjection, TKey>(Expression<Func<TDocument, bool>> filter, Expression<Func<TDocument, TProjection>> projection, string partitionKey = null)
-            where TDocument : IDocument<TKey>
-            where TKey : IEquatable<TKey>
-            where TProjection : class
-        {
-            return HandlePartitioned<TDocument, TKey>(partitionKey).Find(filter)
-                                                                   .Project(projection)
-                                                                   .FirstOrDefault();
-        }
-
-        /// <summary>
-        /// Asynchronously returns a list of projected documents matching the filter condition.
-        /// </summary>
-        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
-        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
-        /// <typeparam name="TProjection">The type representing the model you want to project to.</typeparam>
-        /// <param name="filter">A LINQ expression filter.</param>
-        /// <param name="projection">The projection expression.</param>
-        /// <param name="partitionKey">An optional partition key.</param>
-        /// <param name="cancellationToken">An optional cancellation Token.</param>
         public virtual async Task<List<TProjection>> ProjectManyAsync<TDocument, TProjection, TKey>(
             Expression<Func<TDocument, bool>> filter,
             Expression<Func<TDocument, TProjection>> projection,
@@ -79,23 +41,34 @@ namespace MongoDbGenericRepository.DataAccess.Read
                 .ToListAsync(cancellationToken);
         }
 
-        /// <summary>
+        /// <inheritdoc />
-        /// Asynchronously returns a list of projected documents matching the filter condition.
+        public virtual TProjection ProjectOne<TDocument, TProjection, TKey>(
-        /// </summary>
+            Expression<Func<TDocument, bool>> filter,
-        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
+            Expression<Func<TDocument, TProjection>> projection,
-        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
+            string partitionKey = null,
-        /// <typeparam name="TProjection">The type representing the model you want to project to.</typeparam>
+            CancellationToken cancellationToken = default)
-        /// <param name="filter">The document filter.</param>
-        /// <param name="projection">The projection expression.</param>
-        /// <param name="partitionKey">An optional partition key.</param>
-        public virtual List<TProjection> ProjectMany<TDocument, TProjection, TKey>(Expression<Func<TDocument, bool>> filter, Expression<Func<TDocument, TProjection>> projection, string partitionKey = null)
             where TDocument : IDocument<TKey>
             where TKey : IEquatable<TKey>
             where TProjection : class
         {
             return HandlePartitioned<TDocument, TKey>(partitionKey).Find(filter)
                 .Project(projection)
-                                                                   .ToList();
+                .FirstOrDefault(cancellationToken);
+        }
+
+        /// <inheritdoc />
+        public virtual List<TProjection> ProjectMany<TDocument, TProjection, TKey>(
+            Expression<Func<TDocument, bool>> filter,
+            Expression<Func<TDocument, TProjection>> projection,
+            string partitionKey = null,
+            CancellationToken cancellationToken = default)
+            where TDocument : IDocument<TKey>
+            where TKey : IEquatable<TKey>
+            where TProjection : class
+        {
+            return HandlePartitioned<TDocument, TKey>(partitionKey).Find(filter)
+                .Project(projection)
+                .ToList(cancellationToken);
         }
     }
 }