is it normal that when one doubleclick on an yellow item in the list it does not open a debugger?
No, that's not normal. Right now I can think of two possible causes: - The test is not deterministic or has side effects that cause it to sometimes fail and sometimes pass. - Another reason that I recently noticed is related to exceptions and how SUnit runs the tests. When a test is run (when you click on run) the code is wrapped into an [ ... ] on: Error do: ..., thus catching all exceptions. When a test is debugged (when you click on an item on the list) the code is not wrapped in such a handler assuming that this would cause the system to open a debugger. However, depending on the exception raised this causes a custom default action to be evaluated and the test does not fail anymore. Many file-related exceptions have such a default behavior. Oscar recently reported an issue on this: <http://code.google.com/p/pharo/issues/detail?id=698>. I wonder why this only appeared now? Was there anything changed related to SUnit or Exceptions? Lukas -- Lukas Renggli http://www.lukas-renggli.ch