tests for readonly repositories

CoreUnitTests/Infrastructure/TestReadOnlyMongoRepositoryContext.cs

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+using System;
+using AutoFixture;
+using AutoFixture.AutoMoq;
+using MongoDB.Driver;
+using MongoDbGenericRepository.DataAccess.Read;
+using Moq;
+
+namespace CoreUnitTests.Infrastructure;
+
+public class TestReadOnlyMongoRepositoryContext
+{
+    private readonly Mock<IMongoDatabase> mongoDatabase;
+
+    private TestReadOnlyMongoRepository sut;
+
+    protected TestReadOnlyMongoRepositoryContext()
+    {
+        mongoDatabase = new Mock<IMongoDatabase>();
+        Fixture = new Fixture().Customize(new AutoMoqCustomization());
+    }
+
+    protected IFixture Fixture { get; set; }
+
+    protected TestReadOnlyMongoRepository Sut
+    {
+        get
+        {
+            if (sut != null)
+            {
+                return sut;
+            }
+
+            sut = Fixture.Create<TestReadOnlyMongoRepository>();
+
+            if (Reader != null)
+            {
+                sut.SetReader(Reader.Object);
+            }
+
+            return sut;
+        }
+    }
+
+    protected Mock<IMongoDbReader> Reader { get; set; }
+
+    protected Mock<T> MockOf<T>()
+        where T : class =>
+        Fixture.Freeze<Mock<T>>();
+}