Context.execute_steps: Add configuration point to enable/disable the exception tracebacks

[jenisys]

RELATED TO: Discussion in #981

QUESTION: Is it possible to omit the traceback for the steps which use context.execute_steps() ?

Currently not, as you can see from the referenced implementation of behave.runner:Context.execute_steps().
A configuration point needs to be introduced to be able to configured the desired behaviour
(with tracebacks or without tracebacks). But even without tracebacks this would mean at least two lines in my opinion:
The assertion message (string from AssertionError) and the diagnostics in which dubstep the assertion failed.
In addition, it may be useful to switch on exception-tracebacks if the --verbose option is used.

SEE ALSO:

• behave.runner:Context.execute_steps

[berndhahnebach]

Actually I do would like to omit even more ... The user should not see a sub step has been executed. Thus this seams what I am after ... here

behave/behave/runner.py

Line 412 in 9520119

if not passed:

                if not passed:
                    # -- ISSUE #96: Provide more substep info to diagnose problem.
                    step_line = u"%s %s" % (step.keyword, step.name)
                    # message = "%s SUB-STEP: %s" % \
                    #           (step.status.name.upper(), step_line)
                    message = ""
                    if step.error_message:
                        # message += "\nSubstep info: %s\n" % step.error_message
                        message = "\n%s\n" % step.error_message
                        # message += u"Traceback (of failed substep):\n"
                        # message += u"".join(traceback.format_tb(step.exc_traceback))
                    # message += u"\nTraceback (of context.execute_steps()):"
                    assert False, message

We do use the context.execute_steps() method for translating system. Means any language just uses context.execute_steps() and executes the english test. See https://github.com/IfcOpenShell/IfcOpenShell/tree/4e9a5f246f2260ad6a9c1c6ffa46230a0f8b5914/src/ifcbimtester/bimtester/features/steps/project_setup

[berndhahnebach]

Mhh but if the linked step has some other problems than the test errors, like some wrong code this error message is omited too if my code is used. Not smart, but fine for me ATM because this is not important for the user and I do know where to activate the error message print of the linked step.