public void Test_method_Get_all_entities_return_all_entities() { DbContext dbContextMock = new DbContextMock("TestGetAllEntities"); var users = Users(); dbContextMock.AddRange(users); dbContextMock.SaveChanges(); ModelRepository <ModelTest> modelRepository = new ModelRepository <ModelTest>(dbContextMock as IDbContext); List <ModelTest> response = modelRepository.GetAllEntities(); Assert.AreEqual(users.Count, response.Count); }