Assert, Args.Ignore and Occurs.Never()

[Isaac Abraham]

An assertion on a mock where you use Args.Ignore() seems to ignore the extra "Occurs.Never()" condition i.e.

// Both of these pass
Mock.Assert(() => mock.Foo(null, null), Args.Ignore(), Occurs.Never());
Mock.Assert(() => mock.Foo(null, null), Args.Ignore());

If you remove the Args.Ignore() and explicitly specify the arguments, Occurs.Never() starts to actually be evaluated.

[Kaloyan]

Hi Isaac,

I was not able to reproduce this on my side. I wrote the following test, which fails as expected:

public class Bar
{
    public virtual void Foo(string str1, string str2)
    {

    }
}

[TestMethod]
public void TestMethod1()
{
    var mock = Mock.Create<Bar>();

    mock.Foo("t", "v");

    Mock.Assert(() => mock.Foo(null, null), Args.Ignore(), Occurs.Never());
}

Can you provide a sample of the failing scenario?

Thanks in advance.

Regards,
Kaloyan
Telerik

[Isaac Abraham]

Hiya

Bizarre - I restarted VS2013 and could not reproduce the problem.

Apologies - please close this ticket.

[Isaac Abraham]

I've repro'd it now: -

public class TestClass
{
    [Fact]
    public void TestMethod()
    {
        var thing = Mock.Create<IMyInterface>();

        thing.Foo(123);

        Mock.Assert(() => thing.Foo(new object()), Args.Ignore(), Occurs.Once());
    }
}

public interface IMyInterface
{
    int Foo(object stuff);
}

You can get the test to pass by doing any of three things: -

1. Change the return type of Foo to void.
2. Removing the Occurs.Once() condition.
3. Passing in 123 instead of new object()).

[Kaloyan]

Hi Isaac,

Thank you for the sample. It reproduces on our side too.

I have added the bug in our backlog in order to be fixed in the near future.

P.S. For reporting a bug I have granted you some Telerik points.

Regards,
Kaloyan
Telerik