Mock classes

Hi

OK
We have here few issues.
First you have a bug in your code.
In the constructor of ClassCalled I assume you mean

this.cm = cm;

instead of

cm = cm;

Second In the test method I assume you mean to write

Mock mockClassManager = MockManager.Mock(typeof(ClassManager));
mockClass1.ExpectCall("doSomething");

instead of

Mock mockClassManager = MockManager.Mock(typeof(MockManager));
cm.class1Instance.ExpectCall("doSomething");

You don't want to mock TypeMock.NET classes do you? :wink:

So now our test method look like this:

        public void test()
        {
            MockManager.Init();
            Mock mockClassManager = MockManager.Mock(typeof(ClassManager));
            Mock mockClass1 = MockManager.Mock(typeof(Class1));
            Mock mockClass2 = MockManager.Mock(typeof(Class2));

            ClassManager cm = new ClassManager();
            ClassCalled cc = new ClassCalled(cm);

            mockClass1.ExpectCall("doSomething");

            cc.call();
        }

But we still get that evil Null reference exception :evil: that we all learned to hate.
What happened here is that when you mock the ClassManager class its constructor is mocked by default so c1 and c2 are not built
and that's was causing the exception.
The solution in this case is to use the second parameter in MockManager.Mock method like this:

Mock mockClassManager = MockManager.Mock(typeof(ClassManager), Constructor.NotMocked);

This will cause your code calling to the real constructor.

Yup, thank you. I managed to do it yesterday already. thanks

i got another question. using same example, but modify it a bit.

public class ClassCalled
{
public ClassManager cm;

public ClassCalled(ClassManager cm)
{
this.cm = cm;
}

public void call
{
int a = this.cm.class2Instance.a[1]; <------null reference, how can i set this values? is it need to set mock class as constructor.NotMocked and call the read function in class 2?
this.cm.class1Instance.doSomething();
}
}
public class ClassManager
{
private Class1 c1;
private Class1 c2;

public ClassManager()
{
c1 = new Class1;
c2 = new Class2;
}

public Class1 class1Instance
{
return c1;
}

public Class2 class2Instance
{
return c2;
}

}

public class Class1
{
public Class1()
{

}

public void doSomething()
{
......................
}
}

public class Class2
{

private int[] a;
public Class2()
{

}

public void read()
{
a = new int[3]{1, 2, 3};
}
public int[] aInst
{
get{ return a;}
}
}


Testing
[Test]
public void test()
{
MockManager.Init();
Mock mockClassManager = MockManager.Mock(typeof(MockManager), Constructor.NotMocked);
Mock mockClass1 = MockManager.Mock(typeof(Class1));
Mock mockClass2 = MockManager.Mock(typeof(Class2));

ClassManager cm = new ClassManager();
ClassCalled cc = new ClassCalled(cm);

mockClass1.ExpectCall("doSomething");

cc.call();
}

sorry, it is

public int[] a
{
get{ return a;}
}

instead of

public int[] aInst
{
get{ return a;}
}

i try to add in 1 line in test(), but still got same exception, System.NullReferenceException.

MockClass2.ExpectGetAndAlwaysThrow("a",new System.NullReferenceException());