Mocking objects with Moq when constructor has parameters

Question

I have an object I\'m trying to mock using moq. The object\'s constructor has required parameters:

public class CustomerSyncEngine {
    public CustomerSyncE         


        

Answer 1

The last line is giving you a real instance because you are using the new keyword, not mocking CustomerSyncEngine.

You should use Mock.Of<CustomerSyncEngine>()

The only problem with Mocking Concrete types is that Moq would need a public default constructor(with no parameters) OR you need to create the Moq with constructor arg specification. http://www.mockobjects.com/2007/04/test-smell-mocking-concrete-classes.html

The best thing to do would be right click on your class and choose Extract interface.

Answer 2

Change the last line to

var syncEngine = new Mock<CustomerSyncEngine>(mockLogger, mockCrm, mockCache).Object;

and it should work