Mocking UnitOfWork / GenericRepository Implementation-CodePudding

I followed this SO answer to a similar question, (the below is an implentation of the 2nd answer)

I'm trying to figure out how to test:

 public async Task<string> DoWork()
        {
            return await _testRepository.GetAsync(); <-- how do I test here???
        }

Example Class

using System.Threading.Tasks;
using Test.DataAccess.Core;
using Test.DataAccess.Repository;

namespace Test.DataAccess
{
    public class TestManager : ITestManager
    {
        private IUnitOfWork _unitOfWork;
        private ITestRepository _testRepository;

        public TestManager(IUnitOfWork unitOfWork)
        {
            _unitOfWork = unitOfWork;
            _testRepository = _unitOfWork.GetRepository<TestRepository>();
        }
        
        public async Task<string> DoWork()
        {
            return await _testRepository.GetAsync();
        }

    }
}

Example Repo Link:

Class Link

Repo Link

CodePudding user response：

It depends. What are you trying to test? If you need to mock your ITestRepository that is being built by your IUnitOfWork, with NSubstitute you can do something like:

public class SomeTestClass
{
    public void SomeTest()
    {
        var repository = Substitute.For<ITestRepository>();
        var unitOfWork = Substitute.For<IUnitOfWork>();
        unitOfWork.GetRepository<TestRepository>().Returns(repository);
    }
}

In that case you`ll mock both repository and uow and make the uow return the mock repo.