Source code for _pytest.outcomes

"""
exception classes and constants handling test outcomes
as well as functions creating them
"""
from __future__ import absolute_import, division, print_function
import sys


class OutcomeException(BaseException):
    """ OutcomeException and its subclass instances indicate and
        contain info about test and collection outcomes.
    """

    def __init__(self, msg=None, pytrace=True):
        BaseException.__init__(self, msg)
        self.msg = msg
        self.pytrace = pytrace

    def __repr__(self):
        if self.msg:
            val = self.msg
            if isinstance(val, bytes):
                val = val.decode("UTF-8", errors="replace")
            return val
        return "<%s instance>" % (self.__class__.__name__,)

    __str__ = __repr__


TEST_OUTCOME = (OutcomeException, Exception)


class Skipped(OutcomeException):
    # XXX hackish: on 3k we fake to live in the builtins
    # in order to have Skipped exception printing shorter/nicer
    __module__ = "builtins"

    def __init__(self, msg=None, pytrace=True, allow_module_level=False):
        OutcomeException.__init__(self, msg=msg, pytrace=pytrace)
        self.allow_module_level = allow_module_level


class Failed(OutcomeException):
    """ raised from an explicit call to pytest.fail() """

    __module__ = "builtins"


class Exit(KeyboardInterrupt):
    """ raised for immediate program exits (no tracebacks/summaries)"""

    def __init__(self, msg="unknown reason"):
        self.msg = msg
        KeyboardInterrupt.__init__(self, msg)


# exposed helper methods


[docs]def exit(msg): """ exit testing process as if KeyboardInterrupt was triggered. """ __tracebackhide__ = True raise Exit(msg)
exit.Exception = Exit skip.Exception = Skipped
[docs]def fail(msg="", pytrace=True): """ Explicitly fail an executing test with the given message. :param str msg: the message to show the user as reason for the failure. :param bool pytrace: if false the msg represents the full failure information and no python traceback will be reported. """ __tracebackhide__ = True raise Failed(msg=msg, pytrace=pytrace)
fail.Exception = Failed class XFailed(fail.Exception): """ raised from an explicit call to pytest.xfail() """
[docs]def xfail(reason=""): """ Imperatively xfail an executing test or setup functions with the given reason. This function should be called only during testing (setup, call or teardown). .. note:: It is better to use the :ref:`pytest.mark.xfail ref` marker when possible to declare a test to be xfailed under certain conditions like known bugs or missing features. """ __tracebackhide__ = True raise XFailed(reason)
xfail.Exception = XFailed
[docs]def importorskip(modname, minversion=None): """ return imported module if it has at least "minversion" as its __version__ attribute. If no minversion is specified the a skip is only triggered if the module can not be imported. """ import warnings __tracebackhide__ = True compile(modname, "", "eval") # to catch syntaxerrors should_skip = False with warnings.catch_warnings(): # make sure to ignore ImportWarnings that might happen because # of existing directories with the same name we're trying to # import but without a __init__.py file warnings.simplefilter("ignore") try: __import__(modname) except ImportError: # Do not raise chained exception here(#1485) should_skip = True if should_skip: raise Skipped("could not import %r" % (modname,), allow_module_level=True) mod = sys.modules[modname] if minversion is None: return mod verattr = getattr(mod, "__version__", None) if minversion is not None: try: from pkg_resources import parse_version as pv except ImportError: raise Skipped( "we have a required version for %r but can not import " "pkg_resources to parse version strings." % (modname,), allow_module_level=True, ) if verattr is None or pv(verattr) < pv(minversion): raise Skipped( "module %r has __version__ %r, required is: %r" % (modname, verattr, minversion), allow_module_level=True, ) return mod