projection functionality

IntegrationTests/IntegrationTests.csproj

@@ -63,6 +63,7 @@
     <Compile Include="Infrastructure\ITestRepository.cs" />
     <Compile Include="Infrastructure\TestRepository.cs" />
     <Compile Include="CreateTests.cs" />
+    <Compile Include="ProjectTests.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="ReadPartitionedTests.cs" />
     <Compile Include="ReadTests.cs" />

IntegrationTests/ProjectTests.cs

@@ -0,0 +1,148 @@
+using IntegrationTests.Infrastructure;
+using MongoDbGenericRepository.Models;
+using NUnit.Framework;
+using System;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace IntegrationTests
+{
+    public class Nested
+    {
+        public DateTime SomeDate { get; set; }
+
+    }
+
+    public class ProjectTestsDocument : Document
+    {
+        public ProjectTestsDocument()
+        {
+            Version = 2;
+            Nested = new Nested
+            {
+                SomeDate = DateTime.UtcNow
+            };
+        }
+
+        public string SomeContent { get; set; }
+
+        public Nested Nested { get; set; }
+    }
+
+    public class ProjectTests : BaseMongoDbRepositoryTests<ProjectTestsDocument>
+    {
+        private class MyProjection
+        {
+            public DateTime SomeDate { get; set; }
+            public string SomeContent { get; set; }
+        }
+
+        [Test]
+        public async Task ProjectOneAsync()
+        {
+            // Arrange
+            const string someContent = "ProjectOneAsyncContent";
+            var someDate = DateTime.UtcNow;
+            var document = CreateTestDocument();
+            document.SomeContent = someContent;
+            document.Nested.SomeDate = someDate;
+            SUT.AddOne(document);
+            // Act
+            var result = await SUT.ProjectOneAsync<ProjectTestsDocument, MyProjection>(
+                x => x.Id == document.Id, 
+                x => new MyProjection
+                {
+                    SomeContent = x.SomeContent,
+                    SomeDate = x.Nested.SomeDate
+                });
+            // Assert
+            Assert.IsNotNull(result);
+            Assert.AreEqual(someContent, result.SomeContent);
+            Assert.AreEqual(someDate.Minute, result.SomeDate.Minute);
+            Assert.AreEqual(someDate.Second, result.SomeDate.Second);
+        }
+
+        [Test]
+        public void ProjectOne()
+        {
+            // Arrange
+            const string someContent = "ProjectOneContent";
+            var someDate = DateTime.UtcNow;
+            var document = CreateTestDocument();
+            document.SomeContent = someContent;
+            document.Nested.SomeDate = someDate;
+            SUT.AddOne(document);
+            // Act
+            var result = SUT.ProjectOne<ProjectTestsDocument, MyProjection>(
+                x => x.Id == document.Id,
+                x => new MyProjection
+                {
+                    SomeContent = x.SomeContent,
+                    SomeDate = x.Nested.SomeDate
+                });
+            // Assert
+            Assert.IsNotNull(result);
+            Assert.AreEqual(someContent, result.SomeContent);
+            Assert.AreEqual(someDate.Minute, result.SomeDate.Minute);
+            Assert.AreEqual(someDate.Second, result.SomeDate.Second);
+        }
+
+        [Test]
+        public async Task ProjectManyAsync()
+        {
+            // Arrange
+            const string someContent = "ProjectManyAsyncContent";
+            var someDate = DateTime.UtcNow;
+            var document = CreateTestDocuments(5);
+            document.ForEach(e =>
+            {
+                e.SomeContent = someContent;
+                e.Nested.SomeDate = someDate;
+            });
+
+            SUT.AddMany(document);
+            // Act
+            var result = await SUT.ProjectManyAsync<ProjectTestsDocument, MyProjection>(
+                x => x.SomeContent == someContent,
+                x => new MyProjection
+                {
+                    SomeContent = x.SomeContent,
+                    SomeDate = x.Nested.SomeDate
+                });
+            // Assert
+            Assert.AreEqual(5, result.Count);
+            Assert.AreEqual(someContent, result.First().SomeContent);
+            Assert.AreEqual(someDate.Minute, result.First().SomeDate.Minute);
+            Assert.AreEqual(someDate.Second, result.First().SomeDate.Second);
+        }
+
+        [Test]
+        public void ProjectMany()
+        {
+            // Arrange
+            const string someContent = "ProjectManyContent";
+            var someDate = DateTime.UtcNow;
+            var document = CreateTestDocuments(5);
+            document.ForEach(e =>
+            {
+                e.SomeContent = someContent;
+                e.Nested.SomeDate = someDate;
+            });
+
+            SUT.AddMany(document);
+            // Act
+            var result = SUT.ProjectMany<ProjectTestsDocument, MyProjection>(
+                x => x.SomeContent == someContent,
+                x => new MyProjection
+                {
+                    SomeContent = x.SomeContent,
+                    SomeDate = x.Nested.SomeDate
+                });
+            // Assert
+            Assert.AreEqual(5, result.Count);
+            Assert.AreEqual(someContent, result.First().SomeContent);
+            Assert.AreEqual(someDate.Minute, result.First().SomeDate.Minute);
+            Assert.AreEqual(someDate.Second, result.First().SomeDate.Second);
+        }
+    }
+}