third_party.pylibs.pylint.src/test/test_func.py
2010-12-16 11:42:39 +01:00

260 lines
8.2 KiB
Python

# Copyright (c) 2003-2008 LOGILAB S.A. (Paris, FRANCE).
# http://www.logilab.fr/ -- mailto:contact@logilab.fr
#
# This program is free software; you can redistribute it and/or modify it under
# the terms of the GNU 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License along with
# this program; if not, write to the Free Software Foundation, Inc.,
# 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
"""functional/non regression tests for pylint"""
import unittest
import sys
import re
from os import linesep, getcwd
from os.path import exists, abspath, dirname, join
from logilab.common import testlib
from utils import get_tests_info, fix_path, TestReporter
from logilab.astng import MANAGER
from pylint.lint import PyLinter
from pylint import checkers
test_reporter = TestReporter()
linter = PyLinter()
linter.set_reporter(test_reporter)
linter.config.persistent = 0
checkers.initialize(linter)
linter.global_set_option('required-attributes', ('__revision__',))
PY26 = sys.version_info >= (2, 6)
PY3K = sys.version_info >= (3, 0)
if linesep != '\n':
LINE_RGX = re.compile(linesep)
def ulines(string):
return LINE_RGX.sub('\n', string)
else:
def ulines(string):
return string
INFO_TEST_RGX = re.compile('^func_i\d\d\d\d$')
MSG_DIR = join(dirname(abspath(__file__)), 'messages')
INPUT_DIR = join(dirname(abspath(__file__)), 'input')
def exception_str(self, ex):
"""function used to replace default __str__ method of exception instances"""
return 'in %s\n:: %s' % (ex.file, ', '.join(ex.args))
class LintTestUsingModule(testlib.TestCase):
DEFAULT_PACKAGE = 'input'
package = DEFAULT_PACKAGE
linter = linter
module = None
depends = None
_TEST_TYPE = 'module'
def shortDescription(self):
values = { 'mode' : self._TEST_TYPE,
'input': self.module,
'pkg': self.package,
'cls': self.__class__.__name__}
if self.package == self.DEFAULT_PACKAGE:
msg = '%(mode)s test of input file "%(input)s" (%(cls)s)'
else:
msg = '%(mode)s test of input file "%(input)s" in "%(pkg)s" (%(cls)s)'
return msg % values
def test_functionality(self):
tocheck = [self.package+'.'+self.module]
if self.depends:
tocheck += [self.package+'.%s' % name.replace('.py', '')
for name, file in self.depends]
self._test(tocheck)
def _test(self, tocheck):
if PY3K: # XXX remove this if block as soon as python bugs fixed
module = tocheck[0]
if module == 'input.func_unknown_encoding':
self.skipTest('FIXME: http://bugs.python.org/issue10588 '
'(unexpected SyntaxError)')
elif 'func_w0613' in module:
self.skipTest('FIXME: http://bugs.python.org/issue10445 '
'(no line number on function args)')
if INFO_TEST_RGX.match(self.module):
self.linter.enable('I')
else:
self.linter.disable('I')
try:
self.linter.check(tocheck)
except Exception, ex:
# need finalization to restore a correct state
self.linter.reporter.finalize()
ex.file = tocheck
print ex
ex.__str__ = exception_str
raise
got = self.linter.reporter.finalize()
self.assertMultiLineEqual(got, self._get_expected())
def _get_expected(self):
if self.module.startswith('func_noerror_'):
expected = ''
else:
output = open(self.output)
expected = output.read().strip() + '\n'
output.close()
return expected
class LintTestUsingFile(LintTestUsingModule):
_TEST_TYPE = 'file'
def test_functionality(self):
tocheck = [join(INPUT_DIR, self.module + '.py')]
if self.depends:
tocheck += [join(INPUT_DIR, name) for name, _file in self.depends]
self._test(tocheck)
class TestTests(testlib.TestCase):
"""check that all testable messages have been checked"""
@testlib.tag('coverage')
def test_exhaustivity(self):
# skip fatal messages
todo = [msgid for msgid in linter._messages if msgid[0] != 'F']
for msgid in test_reporter.message_ids:
try:
todo.remove(msgid)
except ValueError:
continue
todo.sort()
if PY3K:
rest = ['E1122', 'I0001',
# deprecated exec statement removed from py3k :
'W0122',
# XXX : no use case for now :
'W0402', # deprecated module
'W0403', # implicit relative import
'W0410', # __future__ import not first statement
]
self.assertEqual(todo, rest)
elif PY26:
self.assertEqual(todo, ['E1122', 'I0001'])
else:
self.assertEqual(todo, ['I0001'])
#bycat = {}
#for msgid in linter._messages.keys():
# bycat[msgid[0]] = bycat.setdefault(msgid[0], 0) + 1
#for cat, val in bycat.items():
# print '%s: %s' % (cat, val)
#print 'total', sum(bycat.values())
#
# on 2007/02/17:
#
# W: 48
# E: 42
# R: 15
# C: 13
# F: 7
# I: 5
# total 130
class LintTestNonExistentModuleTC(LintTestUsingModule):
module = 'nonexistent'
_get_expected = lambda self: 'F: 1: No module named nonexistent\n'
tags = testlib.Tags(('generated','pylint_input_%s' % module))
class LintTestNonExistentFileTC(LintTestUsingFile):
module = join(INPUT_DIR, 'nonexistent.py')
_get_expected = lambda self: 'F: 1: No module named %s\n' % self.module[len(getcwd())+1 :]
tags = testlib.Tags(('generated', 'pylint_input_%s' % module))
def test_functionality(self):
self._test([self.module])
def make_tests(filter_rgx):
"""generate tests classes from test info
return the list of generated test classes
"""
if filter_rgx:
is_to_run = re.compile(filter_rgx).search
else:
is_to_run = lambda x: 1
tests = []
for module_file, messages_file in get_tests_info('func_', '.py'):
if not is_to_run(module_file):
continue
base = module_file.replace('func_', '').replace('.py', '')
dependencies = get_tests_info(base, '.py')
class LintTestUsingModuleTC(LintTestUsingModule):
module = module_file.replace('.py', '')
output = messages_file
depends = dependencies or None
tags = testlib.Tags(('generated','pylint_input_%s' % module))
tests.append(LintTestUsingModuleTC)
if MODULES_ONLY:
continue
class LintTestUsingFileTC(LintTestUsingFile):
module = module_file.replace('.py', '')
output = messages_file
depends = dependencies or None
tags = testlib.Tags(('generated', 'pylint_input_%s' % module))
tests.append(LintTestUsingFileTC)
if is_to_run('nonexistent'):
tests.append(LintTestNonExistentModuleTC)
if not MODULES_ONLY:
tests.append(LintTestNonExistentFileTC)
class LintBuiltinModuleTest(LintTestUsingModule):
output = join(MSG_DIR, 'builtin_module.txt')
module = 'sys'
def test_functionality(self):
self._test(['sys'])
tests.append(LintBuiltinModuleTest)
if not filter_rgx:
# test all features are tested :)
tests.append(TestTests)
return tests
FILTER_RGX = None
MODULES_ONLY = False
def suite():
return testlib.TestSuite([unittest.makeSuite(test, suiteClass=testlib.TestSuite)
for test in make_tests(FILTER_RGX)])
if __name__=='__main__':
if '-m' in sys.argv:
MODULES_ONLY = True
sys.argv.remove('-m')
if len(sys.argv) > 1:
FILTER_RGX = sys.argv[1]
del sys.argv[1]
testlib.unittest_main(defaultTest='suite')