Add repository specification unit test.

framework/test/Volo.Abp.EntityFrameworkCore.Tests/Volo/Abp/EntityFrameworkCore/Repositories/Repository_Specifications_Tests.cs

@@ -0,0 +1,8 @@
+using Volo.Abp.TestApp.Testing;
+
+namespace Volo.Abp.EntityFrameworkCore.Repositories
+{
+    public class Repository_Specifications_Tests : Repository_Specifications_Tests<AbpEntityFrameworkCoreTestModule>
+    {
+    }
+}

framework/test/Volo.Abp.MemoryDb.Tests/Volo/Abp/MemoryDb/Repositories/Repository_Specifications_Tests.cs

@@ -0,0 +1,8 @@
+using Volo.Abp.TestApp.Testing;
+
+namespace Volo.Abp.MemoryDb.Repositories
+{
+    public class Repository_Specifications_Tests : Repository_Specifications_Tests<AbpMemoryDbTestModule>
+    {
+    }
+}

framework/test/Volo.Abp.MongoDB.Tests/Volo/Abp/MongoDB/Repositories/Repository_Specifications_Tests.cs

@@ -0,0 +1,8 @@
+using Volo.Abp.TestApp.Testing;
+
+namespace Volo.Abp.MongoDB.Repositories
+{
+    public class Repository_Specifications_Tests : Repository_Specifications_Tests<AbpMongoDbTestModule>
+    {
+    }
+}

framework/test/Volo.Abp.TestApp/Volo.Abp.TestApp.csproj

@@ -16,6 +16,7 @@
     <ProjectReference Include="..\..\src\Volo.Abp.AutoMapper\Volo.Abp.AutoMapper.csproj" />
     <ProjectReference Include="..\..\src\Volo.Abp.Ddd.Application\Volo.Abp.Ddd.Application.csproj" />
     <ProjectReference Include="..\..\src\Volo.Abp.TestBase\Volo.Abp.TestBase.csproj" />
+    <ProjectReference Include="..\..\src\Volo.Abp.Specifications\Volo.Abp.Specifications.csproj" />
     <ProjectReference Include="..\AbpTestBase\AbpTestBase.csproj" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.0.1" />
   </ItemGroup>

framework/test/Volo.Abp.TestApp/Volo/Abp/TestApp/Testing/Repository_Specifications_Tests.cs

@@ -0,0 +1,40 @@
+using System;
+using System.Linq;
+using System.Linq.Expressions;
+using Shouldly;
+using Volo.Abp.Domain.Repositories;
+using Volo.Abp.Modularity;
+using Volo.Abp.Specifications;
+using Volo.Abp.TestApp.Domain;
+using Xunit;
+
+namespace Volo.Abp.TestApp.Testing
+{
+    public abstract class Repository_Specifications_Tests<TStartupModule> : TestAppTestBase<TStartupModule>
+        where TStartupModule : IAbpModule
+    {
+        protected readonly IRepository<City, Guid> CityRepository;
+
+        protected Repository_Specifications_Tests()
+        {
+            CityRepository = GetRequiredService<IRepository<City, Guid>>();
+        }
+
+        [Fact]
+        public void SpecificationWithRepository_Test()
+        {
+            WithUnitOfWork(() =>
+            {
+                CityRepository.Count(new CitySpecification().ToExpression()).ShouldBe(1);
+            });
+        }
+    }
+
+    public class CitySpecification : Specification<City>
+    {
+        public override Expression<Func<City, bool>> ToExpression()
+        {
+            return city => city.Name == "Istanbul";
+        }
+    }
+}