Mailman 3 August 2007 - pytest-dev

[py-dev] py.test: broken assert evaluate twice
by Immanuel Scholz Sept. 2, 2007

Sept. 2, 2007

Hi list, I am rather new to py library and just started using py.test. You may already have noticed, that the "assert" in magic-mode will evaluate its arguments (e.g. the parts of an equality check) more than once. This will not work, if the arguments have side effects, as in: i = 1 def foo(): global i i += 1 return i def test_foo(): assert foo() == 3 Is there a common solution to this, other than the annoying foo_result = foo() assert foo_result == 3 thingie? Maybe py.test could preemptive cache all calls to assert beforehand? Is this possible? Ciao, Imi. -- DF0E A04F 7063 69C5 A76B 7557 0A77 608F 9172 3535

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Re: [py-dev] [py-svn] r45649 - py/trunk/py
by holger krekel Aug. 14, 2007

Aug. 14, 2007

Hi Maciej, (cc py-dev), i see the idea/need for more differentiated ways of skipping (or test failures) but don't like adding new names to the geneneral py.test namespace like this. What about decorating functions in special ways? best, holger On Tue, Aug 14, 2007 at 11:49 +0200, fijal(a)codespeak.net wrote: > Author: fijal > Date: Tue Aug 14 11:49:04 2007 > New Revision: 45649 > > Modified: > py/trunk/py/__init__.py > Log: > Two possible skip reasons > > > Modified: py/trunk/py/__init__.py > ============================================================================== > --- py/trunk/py/__init__.py (original) > +++ py/trunk/py/__init__.py Tue Aug 14 11:49:04 2007 > @@ -31,6 +31,8 @@ > 'test.skip' : ('./test/item.py', 'skip'), > 'test.fail' : ('./test/item.py', 'fail'), > 'test.exit' : ('./test/session.py', 'exit'), > + 'test.broken' : ('./test/item.py', 'Broken'), > + 'test.notimplemented' : ('./test/item.py', '_NotImplemented'), > > # configuration/initialization related test api > 'test.config' : ('./test/config.py', 'config_per_process'), > _______________________________________________ > py-svn mailing list > py-svn(a)codespeak.net > http://codespeak.net/mailman/listinfo/py-svn > -- merlinux GmbH Steinbergstr. 42 31139 Hildesheim http://merlinux.de tel +49 5121 20800 75 (fax 77)

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[py-dev] py.test and asserts in method_teardown
by Johan Björk Aug. 8, 2007

Aug. 8, 2007

Hi, First post on the list, please excuse me if I don't follow normal guidelines for posting here... I'm having an assert in my method_teardown, which gives rather confusing results. See attached short example (ugly) Running py.test on this testclass, you will get an output similar to: entrypoint: TestMyClass().testApa3 _________________________________________ def teardown_method(self,method): if(salmon): E assert 0 > assert 0 [/Users/phb/Documents/Development/radar/pytest/test_class.py:9] I would have expected to get "testApa2" as the entrypoint. Ideas? Thanks /Johan

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[py-dev] py.test error?
by anurag uniyal Aug. 3, 2007

Aug. 3, 2007

While running py.test on my unitests I got following error in py.test code? It occurred when I changed an assert statement so that it fails. I tried to replicate this in a small sample script but could not replicate it. Here is the complete output: ______ entrypoint: Test_CollectionPrefs().test_recursive_attribute_access ______ def runtraced(self, colitem): if self.shouldclose(): raise Exit, "received external close signal" outcome = None colitem.startcapture() try: self.start(colitem) try: try: if colitem._stickyfailure: raise colitem._stickyfailure > outcome = self.run(colitem) [/usr/lib/python2.4/site-packages/py/test/session.py:83] _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ def run(self, colitem): if self.config.option.collectonly and isinstance(colitem, py.test.collect.Item): return if isinstance(colitem, py.test.collect.Item): colitem._skipbykeyword(self.config.option.keyword) > res = colitem.run() [/usr/lib/python2.4/site-packages/py/test/session.py:106] _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ def run(self): """ setup and execute the underlying test function. """ self._state.prepare(self) > self.execute(self.obj, *self._args) [/usr/lib/python2.4/site-packages/py/test/item.py:67] _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ def execute(self, target, *args): """ execute the given test function. """ > target(*args) [/usr/lib/python2.4/site-packages/py/test/item.py:71] _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ def __init__(self, *args): BuiltinAssertionError.__init__(self, *args) if args: self.msg = str(args[0]) else: f = sys._getframe(1) try: source = py.code.Frame(f).statement source = str(source.deindent()).strip() except py.error.ENOENT: source = None # this can also occur during reinterpretation, when the # co_filename is set to "<run>". if source: > self.msg = exprinfo.interpret(source, f, should_fail=True) [/usr/lib/python2.4/site-packages/py/magic/assertion.py:22] _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ def interpret(source, frame, should_fail=False): module = Interpretable(parse(source, 'exec').node) #print "got module", module if isinstance(frame, py.std.types.FrameType): frame = py.code.Frame(frame) try: module.run(frame) except Failure, e: > return getfailure(e) [/usr/lib/python2.4/site-packages/py/magic/exprinfo.py:424] _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ def getfailure(e): > explanation = e.node.nice_explanation() [/usr/lib/python2.4/site-packages/py/magic/exprinfo.py:450] _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ def nice_explanation(self): # uck! See CallFunc for where \n{ and \n} escape sequences are used raw_lines = (self.explanation or '').split('\n') # escape newlines not followed by { and } lines = [raw_lines[0]] for l in raw_lines[1:]: if l.startswith('{') or l.startswith('}'): lines.append(l) else: lines[-1] += '\\n' + l result = lines[:1] stack = [0] stackcnt = [0] for line in lines[1:]: if line.startswith('{'): if stackcnt[-1]: s = 'and ' else: s = 'where ' stack.append(len(result)) stackcnt[-1] += 1 stackcnt.append(0) result.append(' +' + ' '*(len(stack)-1) + s + line[1:]) else: assert line.startswith('}') stack.pop() stackcnt.pop() E result[stack[-1]] += line[1:] > IndexError: list index out of range [/usr/lib/python2.4/site-packages/py/magic/exprinfo.py:78] _______________________________________________________________ ____________________________________________________________________________________ Be a better Globetrotter. Get better travel answers from someone who knows. Yahoo! Answers - Check it out. http://answers.yahoo.com/dir/?link=list&sid=396545469

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