I think it is not reasonable to fill in the stack trace for the Errors, throwing away the original stack trace: Errors should be treated the same as RuntimeExceptions. Or - if there is some reason for doing so - then at least don't throw away the stack trace of AssertionErrors, they are normal and expected during testing.
At the end of GuiActionRunner there is the following code:
I think it is not reasonable to fill in the stack trace for the Errors, throwing away the original stack trace: Errors should be treated the same as RuntimeExceptions. Or - if there is some reason for doing so - then at least don't throw away the stack trace of AssertionErrors, they are normal and expected during testing.