ca712cb0bd
The hacking "[H203] Use assertIs(Not)None to check for None" is already enabled in tox. But the local hacking M312 is also avaliable, there is no need to check twice here for the same check. Change-Id: I56e19c6dd8905e439247c3b142e74913b5d0d7a6 Closes-Bug: #1710426
341 lines
14 KiB
Python
341 lines
14 KiB
Python
# Copyright 2014 Red Hat, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import itertools
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import sys
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import textwrap
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import ddt
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import mock
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import pep8
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from manila.hacking import checks
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from manila import test
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@ddt.ddt
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class HackingTestCase(test.TestCase):
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"""Hacking test cases
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This class tests the hacking checks in manila.hacking.checks by passing
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strings to the check methods like the pep8/flake8 parser would. The parser
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loops over each line in the file and then passes the parameters to the
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check method. The parameter names in the check method dictate what type of
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object is passed to the check method. The parameter types are::
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logical_line: A processed line with the following modifications:
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- Multi-line statements converted to a single line.
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- Stripped left and right.
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- Contents of strings replaced with "xxx" of same length.
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- Comments removed.
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physical_line: Raw line of text from the input file.
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lines: a list of the raw lines from the input file
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tokens: the tokens that contribute to this logical line
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line_number: line number in the input file
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total_lines: number of lines in the input file
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blank_lines: blank lines before this one
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indent_char: indentation character in this file (" " or "\t")
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indent_level: indentation (with tabs expanded to multiples of 8)
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previous_indent_level: indentation on previous line
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previous_logical: previous logical line
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filename: Path of the file being run through pep8
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When running a test on a check method the return will be False/None if
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there is no violation in the sample input. If there is an error a tuple is
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returned with a position in the line, and a message. So to check the result
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just assertTrue if the check is expected to fail and assertFalse if it
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should pass.
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"""
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@ddt.data(*itertools.product(
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('', '_', '_LE', '_LI', '_LW'),
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('audit', 'debug', 'error', 'info', 'warn', 'warning', 'critical',
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'exception',)))
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@ddt.unpack
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def test_no_translate_logs(self, log_marker, log_method):
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code = "LOG.{0}({1}('foo'))".format(log_method, log_marker)
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if log_marker:
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self.assertEqual(1, len(list(checks.no_translate_logs(code))))
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else:
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self.assertEqual(0, len(list(checks.no_translate_logs(code))))
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def test_check_explicit_underscore_import(self):
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self.assertEqual(1, len(list(checks.check_explicit_underscore_import(
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"LOG.info(_('My info message'))",
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"manila/tests/other_files.py"))))
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self.assertEqual(1, len(list(checks.check_explicit_underscore_import(
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"msg = _('My message')",
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"manila/tests/other_files.py"))))
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self.assertEqual(0, len(list(checks.check_explicit_underscore_import(
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"from manila.i18n import _",
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"manila/tests/other_files.py"))))
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self.assertEqual(0, len(list(checks.check_explicit_underscore_import(
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"LOG.info(_('My info message'))",
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"manila/tests/other_files.py"))))
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self.assertEqual(0, len(list(checks.check_explicit_underscore_import(
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"msg = _('My message')",
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"manila/tests/other_files.py"))))
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self.assertEqual(0, len(list(checks.check_explicit_underscore_import(
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"from manila.i18n import _LE, _, _LW",
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"manila/tests/other_files2.py"))))
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self.assertEqual(0, len(list(checks.check_explicit_underscore_import(
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"msg = _('My message')",
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"manila/tests/other_files2.py"))))
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self.assertEqual(0, len(list(checks.check_explicit_underscore_import(
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"_ = translations.ugettext",
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"manila/tests/other_files3.py"))))
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self.assertEqual(0, len(list(checks.check_explicit_underscore_import(
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"msg = _('My message')",
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"manila/tests/other_files3.py"))))
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# Complete code coverage by falling through all checks
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self.assertEqual(0, len(list(checks.check_explicit_underscore_import(
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"LOG.info('My info message')",
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"manila.tests.unit/other_files4.py"))))
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self.assertEqual(0, len(list(checks.check_explicit_underscore_import(
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"from manila.i18n import _LW",
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"manila.tests.unit/other_files5.py"))))
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self.assertEqual(1, len(list(checks.check_explicit_underscore_import(
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"msg = _('My message')",
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"manila.tests.unit/other_files5.py"))))
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# We are patching pep8 so that only the check under test is actually
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# installed.
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@mock.patch('pep8._checks',
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{'physical_line': {}, 'logical_line': {}, 'tree': {}})
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def _run_check(self, code, checker, filename=None):
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pep8.register_check(checker)
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lines = textwrap.dedent(code).strip().splitlines(True)
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checker = pep8.Checker(filename=filename, lines=lines)
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checker.check_all()
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checker.report._deferred_print.sort()
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return checker.report._deferred_print
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def _assert_has_errors(self, code, checker, expected_errors=None,
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filename=None):
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actual_errors = [e[:3] for e in
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self._run_check(code, checker, filename)]
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self.assertEqual(expected_errors or [], actual_errors)
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def _assert_has_no_errors(self, code, checker, filename=None):
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self._assert_has_errors(code, checker, filename=filename)
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def test_logging_format_no_tuple_arguments(self):
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checker = checks.CheckLoggingFormatArgs
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code = """
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import logging
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LOG = logging.getLogger()
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LOG.info("Message without a second argument.")
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LOG.critical("Message with %s arguments.", 'two')
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LOG.debug("Volume %s caught fire and is at %d degrees C and"
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" climbing.", 'volume1', 500)
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"""
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self._assert_has_no_errors(code, checker)
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@ddt.data(*checks.CheckLoggingFormatArgs.LOG_METHODS)
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def test_logging_with_tuple_argument(self, log_method):
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checker = checks.CheckLoggingFormatArgs
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code = """
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import logging
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LOG = logging.getLogger()
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LOG.{0}("Volume %s caught fire and is at %d degrees C and "
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"climbing.", ('volume1', 500))
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"""
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self._assert_has_errors(code.format(log_method), checker,
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expected_errors=[(4, 21, 'M310')])
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def test_str_on_exception(self):
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checker = checks.CheckForStrUnicodeExc
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code = """
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def f(a, b):
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try:
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p = str(a) + str(b)
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except ValueError as e:
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p = str(e)
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return p
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"""
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errors = [(5, 16, 'M325')]
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self._assert_has_errors(code, checker, expected_errors=errors)
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def test_no_str_unicode_on_exception(self):
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checker = checks.CheckForStrUnicodeExc
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code = """
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def f(a, b):
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try:
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p = unicode(a) + str(b)
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except ValueError as e:
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p = e
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return p
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"""
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self._assert_has_no_errors(code, checker)
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def test_unicode_on_exception(self):
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checker = checks.CheckForStrUnicodeExc
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code = """
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def f(a, b):
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try:
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p = str(a) + str(b)
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except ValueError as e:
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p = unicode(e)
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return p
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"""
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errors = [(5, 20, 'M325')]
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self._assert_has_errors(code, checker, expected_errors=errors)
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def test_str_on_multiple_exceptions(self):
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checker = checks.CheckForStrUnicodeExc
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code = """
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def f(a, b):
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try:
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p = str(a) + str(b)
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except ValueError as e:
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try:
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p = unicode(a) + unicode(b)
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except ValueError as ve:
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p = str(e) + str(ve)
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p = e
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return p
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"""
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errors = [(8, 20, 'M325'), (8, 29, 'M325')]
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self._assert_has_errors(code, checker, expected_errors=errors)
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def test_str_unicode_on_multiple_exceptions(self):
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checker = checks.CheckForStrUnicodeExc
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code = """
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def f(a, b):
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try:
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p = str(a) + str(b)
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except ValueError as e:
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try:
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p = unicode(a) + unicode(b)
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except ValueError as ve:
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p = str(e) + unicode(ve)
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p = str(e)
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return p
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"""
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errors = [(8, 20, 'M325'), (8, 33, 'M325'), (9, 16, 'M325')]
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self._assert_has_errors(code, checker, expected_errors=errors)
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def test_trans_add(self):
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checker = checks.CheckForTransAdd
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code = """
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def fake_tran(msg):
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return msg
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_ = fake_tran
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_LI = _
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_LW = _
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_LE = _
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_LC = _
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def f(a, b):
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msg = _('test') + 'add me'
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msg = _LI('test') + 'add me'
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msg = _LW('test') + 'add me'
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msg = _LE('test') + 'add me'
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msg = _LC('test') + 'add me'
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msg = 'add to me' + _('test')
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return msg
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"""
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# Python 3.4.0 introduced a change to the column calculation during AST
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# parsing. This was reversed in Python 3.4.3, hence the version-based
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# expected value calculation. See #1499743 for more background.
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if sys.version_info < (3, 4, 0) or sys.version_info >= (3, 4, 3):
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errors = [(13, 10, 'M326'), (14, 10, 'M326'), (15, 10, 'M326'),
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(16, 10, 'M326'), (17, 10, 'M326'), (18, 24, 'M326')]
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else:
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errors = [(13, 11, 'M326'), (14, 13, 'M326'), (15, 13, 'M326'),
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(16, 13, 'M326'), (17, 13, 'M326'), (18, 25, 'M326')]
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self._assert_has_errors(code, checker, expected_errors=errors)
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code = """
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def f(a, b):
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msg = 'test' + 'add me'
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return msg
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"""
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errors = []
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self._assert_has_errors(code, checker, expected_errors=errors)
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def test_dict_constructor_with_list_copy(self):
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self.assertEqual(1, len(list(checks.dict_constructor_with_list_copy(
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" dict([(i, connect_info[i])"))))
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self.assertEqual(1, len(list(checks.dict_constructor_with_list_copy(
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" attrs = dict([(k, _from_json(v))"))))
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self.assertEqual(1, len(list(checks.dict_constructor_with_list_copy(
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" type_names = dict((value, key) for key, value in"))))
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self.assertEqual(1, len(list(checks.dict_constructor_with_list_copy(
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" dict((value, key) for key, value in"))))
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self.assertEqual(1, len(list(checks.dict_constructor_with_list_copy(
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"foo(param=dict((k, v) for k, v in bar.items()))"))))
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self.assertEqual(1, len(list(checks.dict_constructor_with_list_copy(
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" dict([[i,i] for i in range(3)])"))))
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self.assertEqual(1, len(list(checks.dict_constructor_with_list_copy(
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" dd = dict([i,i] for i in range(3))"))))
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self.assertEqual(0, len(list(checks.dict_constructor_with_list_copy(
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" create_kwargs = dict(snapshot=snapshot,"))))
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self.assertEqual(0, len(list(checks.dict_constructor_with_list_copy(
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" self._render_dict(xml, data_el, data.__dict__)"))))
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def test_no_xrange(self):
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self.assertEqual(1, len(list(checks.no_xrange("xrange(45)"))))
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self.assertEqual(0, len(list(checks.no_xrange("range(45)"))))
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def test_validate_assertTrue(self):
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test_value = True
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self.assertEqual(0, len(list(checks.validate_assertTrue(
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"assertTrue(True)"))))
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self.assertEqual(1, len(list(checks.validate_assertTrue(
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"assertEqual(True, %s)" % test_value))))
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def test_check_uuid4(self):
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code = """
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fake_uuid = uuid.uuid4()
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"""
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errors = [(1, 0, 'M354')]
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self._assert_has_errors(code, checks.check_uuid4,
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expected_errors=errors)
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code = """
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hex_uuid = uuid.uuid4().hex
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"""
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self._assert_has_no_errors(code, checks.check_uuid4)
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def test_no_log_warn_check(self):
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self.assertEqual(0, len(list(checks.no_log_warn_check(
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"LOG.warning('This should not trigger LOG.warn "
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"hacking check.')"))))
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self.assertEqual(1, len(list(checks.no_log_warn_check(
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"LOG.warn('We should not use LOG.warn')"))))
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foo = """
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LOG.warn('Catch me too, please'
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)
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"""
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self.assertEqual(1, len(list(checks.no_log_warn_check(foo))))
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