Wrong error message when an exception is thrown

[blastrock]

Hi,

I have an issue when asserting the result of a call that returns a boolean. If the call throws an exception, the error message says it returned false, which is wrong.

Here's a test snippet:

        await Assert.That(() => { throw new Exception("No"); return true; }).IsEqualTo(true);

This is the error message:

  Expected () => { throw new Exception("No"); return true; } to be equal to True
  
  but found False

The message should not say that my lambda returned false, and the message should print the exception I have thrown.

EDIT: TUnit 0.24.0, .NET 9.0.5

[samtrion]

I think you are under a misconception here. return true; is never called - Unreachable code. Therefore the error message is correct, because Boolean default is false.

[blastrock]

I don't know about this logic. The thing is that this is not the expected behavior, the function has thrown and the error message from TUnit does not mention it, making debugging very hard.

Here is another example with IsEqualTo(false) instead:

        await Assert.That(() => { throw new Exception("No"); return true; }).IsEqualTo(false);

This gives:

System.NullReferenceException: Object reference not set to an instance of an object.

Btw, this is on TUnit 0.24.0, .NET 9.0.5.

EDIT: this looks like #2129

[thomhurst]

Improved error message should be in the next version 😄