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# Subset of nose tools (the parts included have not been modified)
# Borrowed from:
# https://raw.githubusercontent.com/nose-devs/nose/7c26ad1e6b7d308cafa328ad34736d34028c122a/nose/tools/nontrivial.py
# Copyright (c) 2005-2009 Jason Pellerin and others.
#
# This program is free software; you can redistribute it and/or modify it under the
# terms of the GNU Lesser General Public License as published by the Free Software
# Foundation; either version 2 of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
# PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License along with
# this program; if not, write to the Free Software Foundation, Inc., 51 Franklin St,
# Fifth Floor, Boston, MA 02110-1301 USA
#
"""Tools not exempt from being descended into in tracebacks"""
import six
def make_decorator(func):
"""
Wraps a test decorator so as to properly replicate metadata
of the decorated function, including nose's additional stuff
(namely, setup and teardown).
"""
def decorate(newfunc):
if hasattr(func, 'compat_func_name'):
name = func.compat_func_name
else:
name = func.__name__
newfunc.__dict__ = func.__dict__
newfunc.__doc__ = func.__doc__
newfunc.__module__ = func.__module__
if not hasattr(newfunc, 'compat_co_firstlineno'):
newfunc.compat_co_firstlineno = six.get_function_code(func).co_firstlineno
try:
newfunc.__name__ = name
except TypeError:
# can't set func name in 2.3
newfunc.compat_func_name = name
return newfunc
return decorate
def raises(*exceptions):
"""Test must raise one of expected exceptions to pass.
Example use::
@raises(TypeError, ValueError)
def test_raises_type_error():
raise TypeError("This test passes")
@raises(Exception)
def test_that_fails_by_passing():
pass
If you want to test many assertions about exceptions in a single test,
you may want to use `assert_raises` instead.
"""
valid = ' or '.join([e.__name__ for e in exceptions])
def decorate(func):
name = func.__name__
def newfunc(*arg, **kw):
try:
func(*arg, **kw)
except exceptions:
pass
except:
raise
else:
message = "%s() did not raise %s" % (name, valid)
raise AssertionError(message)
newfunc = make_decorator(func)(newfunc)
return newfunc
return decorate