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61 lines
1.8 KiB
Python
61 lines
1.8 KiB
Python
"""
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Start a :func:`pdb.post_mortem` on errors and failures.
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This plugin implements :func:`testOutcome` and will drop into pdb
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whenever it sees a test outcome that includes exc_info.
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It fires :func:`beforeInteraction` before launching pdb and
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:func:`afterInteraction` after. Other plugins may implement
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:func:`beforeInteraction` to return False and set event.handled to
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prevent this plugin from launching pdb.
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"""
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import logging
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import pdb
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from nose2 import events
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__unittest = True
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log = logging.getLogger(__name__)
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class Debugger(events.Plugin):
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"""Enter pdb on test error or failure
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.. attribute :: pdb
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For ease of mocking and using different pdb implementations, pdb
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is aliased as a class attribute.
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"""
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configSection = 'debugger'
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commandLineSwitch = ('D', 'debugger', 'Enter pdb on test fail or error')
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# allow easy mocking and replacment of pdb
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pdb = pdb
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def __init__(self):
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self.errorsOnly = self.config.as_bool('errors-only', default=False)
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def testOutcome(self, event):
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"""Drop into pdb on unexpected errors or failures"""
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if not event.exc_info or event.expected:
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# skipped tests, unexpected successes, expected failures
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return
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value, tb = event.exc_info[1:]
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test = event.test
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if self.errorsOnly and isinstance(value, test.failureException):
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return
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evt = events.UserInteractionEvent()
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result = self.session.hooks.beforeInteraction(evt)
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try:
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if not result and evt.handled:
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log.warning(
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"Skipping pdb for %s, user interaction not allowed", event)
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return
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self.pdb.post_mortem(tb)
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finally:
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self.session.hooks.afterInteraction(evt)
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