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All Samples(3299) | Call(3146) | Derive(0) | Import(153)
assert that a code block/function call raises @ExpectedException
and raise a failure exception otherwise.
This helper produces a ``py.code.ExceptionInfo()`` object.
If using Python 2.5 or above, you may use this function as a
context manager::
>>> with raises(ZeroDivisionError):
... 1/0(more...)
def raises(ExpectedException, *args, **kwargs):
""" assert that a code block/function call raises @ExpectedException
and raise a failure exception otherwise.
This helper produces a ``py.code.ExceptionInfo()`` object.
If using Python 2.5 or above, you may use this function as a
context manager::
>>> with raises(ZeroDivisionError):
... 1/0
Or you can specify a callable by passing a to-be-called lambda::
>>> raises(ZeroDivisionError, lambda: 1/0)
or you can specify an arbitrary callable with arguments::
>>> def f(x): return 1/x
...
>>> raises(ZeroDivisionError, f, 0)
>>> raises(ZeroDivisionError, f, x=0)
A third possibility is to use a string to be executed::
>>> raises(ZeroDivisionError, "f(0)")
Performance note:
-----------------
Similar to caught exception objects in Python, explicitly clearing local
references to returned ``py.code.ExceptionInfo`` objects can help the Python
interpreter speed up its garbage collection.
Clearing those references breaks a reference cycle (``ExceptionInfo`` -->
caught exception --> frame stack raising the exception --> current frame
stack --> local variables --> ``ExceptionInfo``) which makes Python keep all
objects referenced from that cycle (including all local variables in the
current frame) alive until the next cyclic garbage collection run. See the
official Python ``try`` statement documentation for more detailed
information.
"""
__tracebackhide__ = True
if ExpectedException is AssertionError:
# we want to catch a AssertionError
# replace our subclass with the builtin one
# see https://bitbucket.org/hpk42/pytest/issue/176/pytestraises
from _pytest.assertion.util import BuiltinAssertionError as ExpectedException
if not args:
return RaisesContext(ExpectedException)
elif isinstance(args[0], str):
code, = args
assert isinstance(code, str)
frame = sys._getframe(1)
loc = frame.f_locals.copy()
loc.update(kwargs)
#print "raises frame scope: %r" % frame.f_locals
try:
code = py.code.Source(code).compile()
py.builtin.exec_(code, frame.f_globals, loc)
# XXX didn'T mean f_globals == f_locals something special?
# this is destroyed here ...
except ExpectedException:
return py.code.ExceptionInfo()
else:
func = args[0]
try:
func(*args[1:], **kwargs)
except ExpectedException:
return py.code.ExceptionInfo()
pytest.fail("DID NOT RAISE")
from py.test import raises
import py
def otherfunc(a,b):
assert a==b
def test_raises(self):
s = 'qwe'
raises(TypeError, "int(s)")
def test_raises_doesnt(self):
raises(IOError, "int('3')")
src/p/l/plexnet-HEAD/third_party/generic/pypy/pypy/interpreter/test/test_argument.py plexnet(Download)
def test_fixedunpacked(self):
space = DummySpace()
args = Arguments(space, [], ["k"], [1])
py.test.raises(ValueError, args.fixedunpack, 1)
args = Arguments(space, ["a", "b"])
py.test.raises(ValueError, args.fixedunpack, 0)
py.test.raises(ValueError, args.fixedunpack, 1)
py.test.raises(ValueError, args.fixedunpack, 3)
py.test.raises(ValueError, args.fixedunpack, 1)
py.test.raises(ValueError, args.fixedunpack, 3)
py.test.raises(ValueError, args.fixedunpack, 4)
assert args.fixedunpack(2) == ['a', 'b']
src/s/y/Sypy-HEAD/interpreter/test/test_argument.py Sypy(Download)
def test_fixedunpacked(self):
space = DummySpace()
args = Arguments(space, [], ["k"], [1])
py.test.raises(ValueError, args.fixedunpack, 1)
args = Arguments(space, ["a", "b"])
py.test.raises(ValueError, args.fixedunpack, 0)
py.test.raises(ValueError, args.fixedunpack, 1)
py.test.raises(ValueError, args.fixedunpack, 3)
py.test.raises(ValueError, args.fixedunpack, 1)
py.test.raises(ValueError, args.fixedunpack, 3)
py.test.raises(ValueError, args.fixedunpack, 4)
assert args.fixedunpack(2) == ['a', 'b']
src/p/l/plexnet-HEAD/third_party/generic/pypy/pypy/lib/test2/test_array.py plexnet(Download)
# minimal tests. See also lib-python/modified-2.4.1/test/test_array. import autopath import py from py.test import raises
assert a.args == ('i', range(10))
assert a.kwds == {'some': 42}
raises(TypeError, A)
raises(TypeError, A, 42)
raises(TypeError, A, 'i', [], [])
raises(TypeError, self.array.array, 'i', [], foo='bar')
src/w/h/wheeler.pygtkhelpers-0.5.post1.dev6264335/tests/test_utils.py wheeler.pygtkhelpers(Download)
from py.test import raises as assert_raises import gobject, gtk from pygtkhelpers.utils import gsignal, gproperty, \
class T1(gobject.GObject):
__gtype_name__ = 'test1'
gsignal('testsignal')
gsignal('b', retval=gobject.TYPE_INT)
assert_raises(TypeError, gsignal, 'c', retval=gobject.TYPE_INT, flags=gobject.SIGNAL_RUN_FIRST)
__gtype_name__ = 'test2'
gproperty('a', int, default=0)
assert_raises(TypeError, gproperty, 'b', bool)
assert_raises(TypeError, gproperty, 'c', bool, default='a')
assert_raises(TypeError, gproperty, 'd', bool, nick=1)
src/p/y/pygtkhelpers-0.4.3/tests/test_utils.py pygtkhelpers(Download)
from py.test import raises as assert_raises import gobject, gtk from pygtkhelpers.utils import gsignal, gproperty, \
class T1(gobject.GObject):
__gtype_name__ = 'test1'
gsignal('testsignal')
gsignal('b', retval=gobject.TYPE_INT)
assert_raises(TypeError, gsignal, 'c', retval=gobject.TYPE_INT, flags=gobject.SIGNAL_RUN_FIRST)
__gtype_name__ = 'test2'
gproperty('a', int, default=0)
assert_raises(TypeError, gproperty, 'b', bool)
assert_raises(TypeError, gproperty, 'c', bool, default='a')
assert_raises(TypeError, gproperty, 'd', bool, nick=1)
src/s/y/Sypy-HEAD/module/array/test/test_array_old.py Sypy(Download)
# minimal tests. See also lib-python/modified-2.4.1/test/test_array. import py from py.test import raises import struct
assert a.args == ('i', range(10))
assert a.kwds == {'some': 42}
raises(TypeError, A)
raises(TypeError, A, 42)
raises(TypeError, A, 'i', [], [])
raises(TypeError, self.array.array, 'i', [], foo='bar')
src/m/o/moingo-HEAD/MoinMoin/_tests/test_wikiutil.py moingo(Download)
def testTooMuchWantedArguments(self):
args = 'width=100, height=200, alt=Example'
argParser = wikiutil.ParameterParser("%(width)s%(height)s")
py.test.raises(ValueError, argParser.parse_parameters, args)
def testMalformedArguments(self):
args = '='
argParser = wikiutil.ParameterParser("%(width)s%(height)s")
py.test.raises(ValueError, argParser.parse_parameters, args)
def testWrongTypeFixedPosArgument(self):
args = '0.0'
argParser = wikiutil.ParameterParser("%b")
py.test.raises(ValueError, argParser.parse_parameters, args)
def testWrongTypeNamedArgument(self):
args = 'flag=0.0'
argParser = wikiutil.ParameterParser("%(flag)b")
py.test.raises(ValueError, argParser.parse_parameters, args)
def testUnitArgument(self):
result = wikiutil.UnitArgument('7mm', float, ['%', 'mm'])
assert result.get_default() == (7.0, 'mm')
assert result.parse_argument('8%') == (8.0, '%')
py.test.raises(ValueError, result.parse_argument, u'7m')
src/m/o/moingo-HEAD/MoinMoin/events/_tests/test_events.py moingo(Download)
def test_page_change_message(request):
page = Page(request, "FrontPage")
print "Provided with a dumb change type argument, this should raise an exception!"
py.test.raises(notification.UnknownChangeType, notification.page_change_message,
src/p/l/plexnet-HEAD/third_party/generic/pypy/pypy/rpython/ootypesystem/test/test_oortype.py plexnet(Download)
def fn():
return Bar()
py.test.raises(AssertionError, gengraph, fn, mangle=False)
def test_pbc_record():
return ooupcast(A, c)
py.test.raises(AnnotatorError, interpret, fn, [], type_system='ootype')
def test_oodowncast():
return oodowncast(A, c)
py.test.raises(AnnotatorError, interpret, fn, [], type_system='ootype')
def test_method_wrapper():
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