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I am working on .NET 4.0 using C# in Windows 7.
I want to test the communication between some methods using mock. The only problem is that I want to do it without implementing an interface. Is that possible?
I just read a lot of topics and some tutorials about mock objects, but all of them used to mock interfaces, and not the classes. I tried to use Rhino and Moq frameworks.
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We can use Mockito class mock() method to create a mock object of a given class or interface. This is the simplest way to mock an object. We are using JUnit 5 to write test cases in conjunction with Mockito to mock objects.
With MoQ, you can mock concrete classes: var mocked = new Mock<MyConcreteClass>(); but this allows you to override virtual code (methods and properties).
You can use Moq to create mock objects that simulate or mimic a real object. Moq can be used to mock both classes and interfaces. However, there are a few limitations you should be aware of. The classes to be mocked can't be static or sealed, and the method being mocked should be marked as virtual.
mock() method allows us to create a mock object of a class or an interface. We can then use the mock to stub return values for its methods and verify if they were called.
Simply mark any method you need to fake as virtual (and not private). Then you will be able to create a fake that can override the method.
If you use new Mock<Type> and you don't have a parameterless constructor then you can pass the parameters as the arguments of the above call as it takes a type of param Objects
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Most mocking frameworks (Moq and RhinoMocks included) generate proxy classes as a substitute for your mocked class, and override the virtual methods with behavior that you define. Because of this, you can only mock interfaces, or virtual methods on concrete or abstract classes. Additionally, if you're mocking a concrete class, you almost always need to provide a parameterless constructor so that the mocking framework knows how to instantiate the class.
Why the aversion to creating interfaces in your code?
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