mirror of
https://github.com/thegeeklab/ansible-later.git
synced 2024-11-14 09:10:39 +00:00
194 lines
6.0 KiB
Python
194 lines
6.0 KiB
Python
"""
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exception classes and constants handling test outcomes
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as well as functions creating them
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"""
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from __future__ import absolute_import
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from __future__ import division
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from __future__ import print_function
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import sys
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class OutcomeException(BaseException):
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""" OutcomeException and its subclass instances indicate and
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contain info about test and collection outcomes.
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"""
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def __init__(self, msg=None, pytrace=True):
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BaseException.__init__(self, msg)
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self.msg = msg
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self.pytrace = pytrace
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def __repr__(self):
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if self.msg:
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val = self.msg
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if isinstance(val, bytes):
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val = val.decode("UTF-8", errors="replace")
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return val
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return "<%s instance>" % (self.__class__.__name__,)
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__str__ = __repr__
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TEST_OUTCOME = (OutcomeException, Exception)
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class Skipped(OutcomeException):
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# XXX hackish: on 3k we fake to live in the builtins
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# in order to have Skipped exception printing shorter/nicer
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__module__ = "builtins"
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def __init__(self, msg=None, pytrace=True, allow_module_level=False):
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OutcomeException.__init__(self, msg=msg, pytrace=pytrace)
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self.allow_module_level = allow_module_level
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class Failed(OutcomeException):
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""" raised from an explicit call to pytest.fail() """
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__module__ = "builtins"
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class Exit(Exception):
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""" raised for immediate program exits (no tracebacks/summaries)"""
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def __init__(self, msg="unknown reason", returncode=None):
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self.msg = msg
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self.returncode = returncode
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super(Exit, self).__init__(msg)
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# exposed helper methods
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def exit(msg, returncode=None):
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"""
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Exit testing process.
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:param str msg: message to display upon exit.
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:param int returncode: return code to be used when exiting pytest.
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"""
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__tracebackhide__ = True
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raise Exit(msg, returncode)
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exit.Exception = Exit
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def skip(msg="", **kwargs):
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"""
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Skip an executing test with the given message.
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This function should be called only during testing (setup, call or teardown) or
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during collection by using the ``allow_module_level`` flag. This function can
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be called in doctests as well.
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:kwarg bool allow_module_level: allows this function to be called at
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module level, skipping the rest of the module. Default to False.
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.. note::
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It is better to use the :ref:`pytest.mark.skipif ref` marker when possible to declare a test to be
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skipped under certain conditions like mismatching platforms or
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dependencies.
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Similarly, use the ``# doctest: +SKIP`` directive (see `doctest.SKIP
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<https://docs.python.org/3/library/doctest.html#doctest.SKIP>`_)
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to skip a doctest statically.
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"""
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__tracebackhide__ = True
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allow_module_level = kwargs.pop("allow_module_level", False)
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if kwargs:
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keys = [k for k in kwargs.keys()]
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raise TypeError("unexpected keyword arguments: {}".format(keys))
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raise Skipped(msg=msg, allow_module_level=allow_module_level)
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skip.Exception = Skipped
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def fail(msg="", pytrace=True):
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"""
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Explicitly fail an executing test with the given message.
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:param str msg: the message to show the user as reason for the failure.
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:param bool pytrace: if false the msg represents the full failure information and no
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python traceback will be reported.
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"""
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__tracebackhide__ = True
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raise Failed(msg=msg, pytrace=pytrace)
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fail.Exception = Failed
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class XFailed(fail.Exception):
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""" raised from an explicit call to pytest.xfail() """
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def xfail(reason=""):
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"""
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Imperatively xfail an executing test or setup functions with the given reason.
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This function should be called only during testing (setup, call or teardown).
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.. note::
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It is better to use the :ref:`pytest.mark.xfail ref` marker when possible to declare a test to be
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xfailed under certain conditions like known bugs or missing features.
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"""
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__tracebackhide__ = True
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raise XFailed(reason)
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xfail.Exception = XFailed
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def importorskip(modname, minversion=None, reason=None):
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"""Imports and returns the requested module ``modname``, or skip the current test
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if the module cannot be imported.
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:param str modname: the name of the module to import
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:param str minversion: if given, the imported module ``__version__`` attribute must be
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at least this minimal version, otherwise the test is still skipped.
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:param str reason: if given, this reason is shown as the message when the module
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cannot be imported.
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"""
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import warnings
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__tracebackhide__ = True
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compile(modname, "", "eval") # to catch syntaxerrors
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should_skip = False
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with warnings.catch_warnings():
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# make sure to ignore ImportWarnings that might happen because
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# of existing directories with the same name we're trying to
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# import but without a __init__.py file
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warnings.simplefilter("ignore")
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try:
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__import__(modname)
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except ImportError:
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# Do not raise chained exception here(#1485)
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should_skip = True
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if should_skip:
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if reason is None:
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reason = "could not import %r" % (modname,)
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raise Skipped(reason, allow_module_level=True)
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mod = sys.modules[modname]
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if minversion is None:
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return mod
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verattr = getattr(mod, "__version__", None)
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if minversion is not None:
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try:
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from pkg_resources import parse_version as pv
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except ImportError:
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raise Skipped(
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"we have a required version for %r but can not import "
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"pkg_resources to parse version strings." % (modname,),
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allow_module_level=True,
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)
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if verattr is None or pv(verattr) < pv(minversion):
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raise Skipped(
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"module %r has __version__ %r, required is: %r"
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% (modname, verattr, minversion),
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allow_module_level=True,
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)
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return mod
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