The following setups were not matched - converting JustMock to Moq - tdd

Question

I am going through this tutorial http://blogs.telerik.com/justteam/posts/13-10-25/30-days-of-tdd-day-17-specifying-order-of-execution-in-mocks in regards to TDD. I am attempting to adapt a JustMock statement to Moq.
enter code here [Test]
public void testname()
{
var customerId = Guid.NewGuid();
var customerToReturn = new Customer { Id = customerId};
//JustCode
Mock _customerService = Mock.Create<ICustomerService>();
Mock.Arrange(() => _customerService.GetCustomer(customerId)).Returns(customer).OccursOnce();
//Moq
Mock<ICustomerService> _customerService = new Mock <ICustomerService>();
_customerService.Setup(os => os.GetCustomer(customerId)).Returns(customerToReturn);
_customerService.VerifyAll();
}
When the test is ran, I get this exception:
Moq.MockVerificationException : The following setups were not matched:ICustomerService os => os.GetCustomer(a1a0d25c-e14a-4c68-ade9-bc3d7dd5c2bc)
When I change .VerifyAll() to .Verify(), the test passes, but I am uncertain if this is correct.
Question: What is the proper way to adapt this code? Is .VerifyAll() not similiar to .OccursOnce()?

Answer 1

It seems you are missing the .verifiable on the setup. Also you can avoid any verifiable , just use the mock.Verify at the end. You must also call the mocked instance so the verifable work.
https://github.com/Moq/moq4/wiki/Quickstart
Please see 2 approaches below.
[Test]
public void testname()
{
var customerId = Guid.NewGuid();
var customerToReturn = new Customer { Id = customerId};
//Moq
var _customerService = new Mock <ICustomerService>();
_customerService.Setup(os => os.GetCustomer(customerId)).Returns(customerToReturn).Verifiable();
var cust = _customerService.Object.GetCustomer(customerId);
_customerService.VerifyAll();
}
[Test]
public void testname1()
{
var customerId = Guid.NewGuid();
var customerToReturn = new Customer { Id = customerId };
//Moq
var _customerService = new Mock<ICustomerService>();
_customerService.Setup(os => os.GetCustomer(customerId)).Returns(customerToReturn);
var cust = _customerService.Object.GetCustomer(customerId);
_customerService.Verify(x => x.GetCustomer(customerId));
}