Unit test - Mocking Service and Repository/Unit Of Work Layer - unit-testing

Question

In my current implementation I use the Domain Service layer to inject the repositories through Unit Of work.
In some cases, I inject other Services into my Service.
However, I have found difficulties to Mock these objects when making unit tests, because whenever a Service class has injection of dependencies with other Services I need to mock the dependencies of that other service.
How to make it work in a simple way?
Was I using the layers wrongly?
Eg:
public class ValueService : IValueService
{
private readonly ITestService _testService;
private readonly IOptionService _optionService;
public ValueService (IUnitOfWork unitOfWork,
ITestService testService,
IOptionService optionService) : base(unitOfWork)
{
_testService = testService;
_optionService = optionService;
}
When I'm going to mock the ValueService class, I need to mock the TestService and OptionService together with their dependencies.
Can you help me to think about this architecture that I'm implementing?

Answer 1

You can try the code below. I hope it helps.
You can inject all your services and repositories.
public class ValueServiceTest
{
private readonly IValueService _valueService;
public ValueServiceTest()
{
_valueService = GetService();
}
***********************
Your test methods.
***********************
private ValueService GetService()
{
var services = new ServiceCollection();
services.AddScoped<IUnitOfWork, UnitOfWork>();
services.AddScoped<IValueService, ValueService>();
services.AddScoped<ITestService, TestService>();
services.AddScoped<IOptionService , OptionService >();
**********************************
You can inject repositories here.
**********************************
var serviceProvider = services.BuildServiceProvider();
return serviceProvider.GetService<IValueService>();
}
}