New issue 739: triple quotes can mess up source code parsing
https://bitbucket.org/pytest-dev/pytest/issue/739/triple-quotes-can-mess-up-source-code
Tomi Pieviläinen:
There seems to be a weird corner case with triple quotes. With a test file
def test_1_works():
('''
''').doesnt_exist()
def test_2_works():
('''
''').lower()
def test_3_works():
'''
'''.doesnt_exist()
def test_1_fails():
('''
''').doesnt_exist()
def test_2_fails():
('''
''').doesnt_exist()
py.test crashes with INTERNALERROR:
$ py.test
============================================================================
test session starts
============================================================================
platform linux -- Python 3.4.3 -- py-1.4.27 -- pytest-2.7.0
rootdir: /home/hukka/pytest-test, inifile:
collected 5 items
test_pytest.py F.F
INTERNALERROR> Traceback (most recent call last):
INTERNALERROR> File
"/home/hukka/addressimport/lib/python3.4/site-packages/_pytest/main.py", line
84, in wrap_session
INTERNALERROR> doit(config, session)
INTERNALERROR> File
"/home/hukka/addressimport/lib/python3.4/site-packages/_pytest/main.py", line
122, in _main
INTERNALERROR> config.hook.pytest_runtestloop(session=session)
INTERNALERROR> File
"/home/hukka/addressimport/lib/python3.4/site-packages/_pytest/core.py", line
521, in __call__
INTERNALERROR> return self._docall(self.methods, kwargs)
INTERNALERROR> File
"/home/hukka/addressimport/lib/python3.4/site-packages/_pytest/core.py", line
528, in _docall
INTERNALERROR> firstresult=self.firstresult).execute()
INTERNALERROR> File
"/home/hukka/addressimport/lib/python3.4/site-packages/_pytest/core.py", line
394, in execute
INTERNALERROR> res = method(*args)
INTERNALERROR> File
"/home/hukka/addressimport/lib/python3.4/site-packages/_pytest/main.py", line
142, in pytest_runtestloop
INTERNALERROR> item.config.hook.pytest_runtest_protocol(item=item,
nextitem=nextitem)
INTERNALERROR> File
"/home/hukka/addressimport/lib/python3.4/site-packages/_pytest/core.py", line
521, in __call__
INTERNALERROR> return self._docall(self.methods, kwargs)
INTERNALERROR> File
"/home/hukka/addressimport/lib/python3.4/site-packages/_pytest/core.py", line
528, in _docall
INTERNALERROR> firstresult=self.firstresult).execute()
INTERNALERROR> File
"/home/hukka/addressimport/lib/python3.4/site-packages/_pytest/core.py", line
393, in execute
INTERNALERROR> return wrapped_call(method(*args), self.execute)
INTERNALERROR> File
"/home/hukka/addressimport/lib/python3.4/site-packages/_pytest/core.py", line
113, in wrapped_call
INTERNALERROR> return call_outcome.get_result()
INTERNALERROR> File
"/home/hukka/addressimport/lib/python3.4/site-packages/_pytest/core.py", line
137, in get_result
INTERNALERROR> raise ex[1].with_traceback(ex[2])
INTERNALERROR> File
"/home/hukka/addressimport/lib/python3.4/site-packages/_pytest/core.py", line
123, in __init__
INTERNALERROR> self.result = func()
INTERNALERROR> File
"/home/hukka/addressimport/lib/python3.4/site-packages/_pytest/core.py", line
394, in execute
INTERNALERROR> res = method(*args)
INTERNALERROR> File
"/home/hukka/addressimport/lib/python3.4/site-packages/_pytest/runner.py", line
65, in pytest_runtest_protocol
INTERNALERROR> runtestprotocol(item, nextitem=nextitem)
INTERNALERROR> File
"/home/hukka/addressimport/lib/python3.4/site-packages/_pytest/runner.py", line
75, in runtestprotocol
INTERNALERROR> reports.append(call_and_report(item, "call", log))
INTERNALERROR> File
"/home/hukka/addressimport/lib/python3.4/site-packages/_pytest/runner.py", line
121, in call_and_report
INTERNALERROR> report = hook.pytest_runtest_makereport(item=item,
call=call)
INTERNALERROR> File
"/home/hukka/addressimport/lib/python3.4/site-packages/_pytest/core.py", line
521, in __call__
INTERNALERROR> return self._docall(self.methods, kwargs)
INTERNALERROR> File
"/home/hukka/addressimport/lib/python3.4/site-packages/_pytest/core.py", line
528, in _docall
INTERNALERROR> firstresult=self.firstresult).execute()
INTERNALERROR> File
"/home/hukka/addressimport/lib/python3.4/site-packages/_pytest/core.py", line
393, in execute
INTERNALERROR> return wrapped_call(method(*args), self.execute)
INTERNALERROR> File
"/home/hukka/addressimport/lib/python3.4/site-packages/_pytest/core.py", line
109, in wrapped_call
INTERNALERROR> wrap_controller.send(call_outcome)
INTERNALERROR> File
"/home/hukka/addressimport/lib/python3.4/site-packages/_pytest/skipping.py",
line 157, in pytest_runtest_makereport
INTERNALERROR> rep = outcome.get_result()
INTERNALERROR> File
"/home/hukka/addressimport/lib/python3.4/site-packages/_pytest/core.py", line
137, in get_result
INTERNALERROR> raise ex[1].with_traceback(ex[2])
INTERNALERROR> File
"/home/hukka/addressimport/lib/python3.4/site-packages/_pytest/core.py", line
123, in __init__
INTERNALERROR> self.result = func()
INTERNALERROR> File
"/home/hukka/addressimport/lib/python3.4/site-packages/_pytest/core.py", line
394, in execute
INTERNALERROR> res = method(*args)
INTERNALERROR> File
"/home/hukka/addressimport/lib/python3.4/site-packages/_pytest/runner.py", line
224, in pytest_runtest_makereport
INTERNALERROR> longrepr = item.repr_failure(excinfo)
INTERNALERROR> File
"/home/hukka/addressimport/lib/python3.4/site-packages/_pytest/python.py", line
625, in repr_failure
INTERNALERROR> return self._repr_failure_py(excinfo, style=style)
INTERNALERROR> File
"/home/hukka/addressimport/lib/python3.4/site-packages/_pytest/python.py", line
618, in _repr_failure_py
INTERNALERROR> style=style)
INTERNALERROR> File
"/home/hukka/addressimport/lib/python3.4/site-packages/_pytest/main.py", line
410, in _repr_failure_py
INTERNALERROR> style=style, tbfilter=tbfilter)
INTERNALERROR> File
"/home/hukka/addressimport/lib/python3.4/site-packages/py/_code/code.py", line
412, in getrepr
INTERNALERROR> return fmt.repr_excinfo(self)
INTERNALERROR> File
"/home/hukka/addressimport/lib/python3.4/site-packages/py/_code/code.py", line
590, in repr_excinfo
INTERNALERROR> reprtraceback = self.repr_traceback(excinfo)
INTERNALERROR> File
"/home/hukka/addressimport/lib/python3.4/site-packages/py/_code/code.py", line
582, in repr_traceback
INTERNALERROR> reprentry = self.repr_traceback_entry(entry, einfo)
INTERNALERROR> File
"/home/hukka/addressimport/lib/python3.4/site-packages/py/_code/code.py", line
543, in repr_traceback_entry
INTERNALERROR> s = self.get_source(source, line_index, excinfo,
short=short)
INTERNALERROR> File
"/home/hukka/addressimport/lib/python3.4/site-packages/py/_code/code.py", line
484, in get_source
INTERNALERROR> lines.append(self.flow_marker + " " +
source.lines[line_index])
INTERNALERROR> IndexError: list index out of range
==================================================================== 2
failed, 1 passed in 0.03 seconds
====================================================================
The first three tests work fine on their own:
$ py.test
============================================================================
test session starts
============================================================================
platform linux -- Python 3.4.3 -- py-1.4.27 -- pytest-2.7.0
rootdir: /home/hukka/pytest-test, inifile:
collected 3 items
test_pytest.py F.F
=================================================================================
FAILURES
==================================================================================
_______________________________________________________________________________
test_1_works
________________________________________________________________________________
def test_1_works():
('''
> ''').doesnt_exist()
E AttributeError: 'str' object has no attribute 'doesnt_exist'
test_pytest.py:3: AttributeError
_______________________________________________________________________________
test_3_works
________________________________________________________________________________
def test_3_works():
'''
> '''.doesnt_exist()
E AttributeError: 'str' object has no attribute 'doesnt_exist'
test_pytest.py:13: AttributeError
==================================================================== 2
failed, 1 passed in 0.02 seconds
====================================================================
but either of the last two will cause this. Same thing happens also on
python2.7.
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