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# IPython: modified copy of numpy.testing.noseclasses, so
# IPython.external._decorators works without numpy being installed.
# These classes implement a "known failure" error class.
import os
from nose.plugins.errorclass import ErrorClass, ErrorClassPlugin
class KnownFailureTest(Exception):
'''Raise this exception to mark a test as a known failing test.'''
pass
class KnownFailure(ErrorClassPlugin):
'''Plugin that installs a KNOWNFAIL error class for the
KnownFailureClass exception. When KnownFailureTest is raised,
the exception will be logged in the knownfail attribute of the
result, 'K' or 'KNOWNFAIL' (verbose) will be output, and the
exception will not be counted as an error or failure.'''
enabled = True
knownfail = ErrorClass(KnownFailureTest,
label='KNOWNFAIL',
isfailure=False)
def options(self, parser, env=os.environ):
env_opt = 'NOSE_WITHOUT_KNOWNFAIL'
parser.add_option('--no-knownfail', action='store_true',
dest='noKnownFail', default=env.get(env_opt, False),
help='Disable special handling of KnownFailureTest '
'exceptions')
def configure(self, options, conf):
if not self.can_configure:
return
self.conf = conf
disable = getattr(options, 'noKnownFail', False)
if disable:
self.enabled = False
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