69e2a3cec1
self.assertEqual((None, None), A) is valid since (None, None) is not None. However assert_equal_none recognizes it as invalid. Solution: Add '$' (Match the end of the text) with/without comment ( |\t)*#.*)? to the regular expressions which intent to match None at the end of string. Change-Id: Ic5e5c16c9225a80b2765a1d3cde9a5b9e83a06fb
262 lines
10 KiB
Python
262 lines
10 KiB
Python
# Copyright (c) 2014 OpenStack Foundation.
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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 re
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from neutron_lib.hacking import translation_checks
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# Guidelines for writing new hacking checks
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#
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# - Use only for Neutron specific tests. OpenStack general tests
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# should be submitted to the common 'hacking' module.
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# - Pick numbers in the range N5xx. Find the current test with
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# the highest allocated number and then pick the next value.
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# - Keep the test method code in the source file ordered based
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# on the N5xx value.
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# - List the new rule in the top level HACKING.rst file
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# - Add test cases for each new rule to
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# neutron_lib/tests/unit/hacking/test_checks.py
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mutable_default_args = re.compile(r"^\s*def .+\((.+=\{\}|.+=\[\])")
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namespace_imports_dot = re.compile(r"import[\s]+([\w]+)[.][^\s]+")
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namespace_imports_from_dot = re.compile(r"from[\s]+([\w]+)[.]")
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namespace_imports_from_root = re.compile(r"from[\s]+([\w]+)[\s]+import[\s]+")
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contextlib_nested = re.compile(r"^\s*with (contextlib\.)?nested\(")
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assert_equal_none_re = re.compile(
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r"assertEqual\(.*?,\s+None\)(( |\t)*#.*)?$|assertEqual\(None,")
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assert_is_none_re = re.compile(
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r"assertIs(Not)?\(.*,\s+None\)(( |\t)*#.*)?$|assertIs(Not)?\(None,")
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def use_jsonutils(logical_line, filename):
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"""N521 - jsonutils must be used instead of json.
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:param logical_line: The logical line to check.
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:param filename: The file name where the logical line exists.
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:returns: None if the logical line passes the check, otherwise a tuple
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is yielded that contains the offending index in logical line and a
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message describe the check validation failure.
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"""
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msg = "N521: jsonutils.%(fun)s must be used instead of json.%(fun)s"
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# Some files in the tree are not meant to be run from inside Neutron
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# itself, so we should not complain about them not using jsonutils
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json_check_skipped_patterns = [
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"neutron/plugins/ml2/drivers/openvswitch/agent/xenapi/etc/xapi.d/"
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"plugins/netwrap",
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]
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for pattern in json_check_skipped_patterns:
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if pattern in filename:
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return
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if "json." in logical_line:
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json_funcs = ['dumps(', 'dump(', 'loads(', 'load(']
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for f in json_funcs:
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pos = logical_line.find('json.%s' % f)
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if pos != -1:
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yield (pos, msg % {'fun': f[:-1]})
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def _check_imports(regex, submatch, logical_line):
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m = re.match(regex, logical_line)
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if m and m.group(1) == submatch:
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return True
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def _check_namespace_imports(failure_code, namespace, new_ns, logical_line,
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message_override=None):
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if message_override is not None:
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msg_o = "%s: %s" % (failure_code, message_override)
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else:
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msg_o = None
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if _check_imports(namespace_imports_from_dot, namespace, logical_line):
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msg = ("%s: '%s' must be used instead of '%s'.") % (
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failure_code,
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logical_line.replace('%s.' % namespace, new_ns),
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logical_line)
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return (0, msg_o or msg)
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elif _check_imports(namespace_imports_from_root, namespace, logical_line):
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msg = ("%s: '%s' must be used instead of '%s'.") % (
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failure_code,
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logical_line.replace(
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'from %s import ' % namespace, 'import %s' % new_ns),
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logical_line)
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return (0, msg_o or msg)
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elif _check_imports(namespace_imports_dot, namespace, logical_line):
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msg = ("%s: '%s' must be used instead of '%s'.") % (
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failure_code,
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logical_line.replace('import', 'from').replace('.', ' import '),
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logical_line)
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return (0, msg_o or msg)
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def check_no_contextlib_nested(logical_line, filename):
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"""N524 - Use of contextlib.nested is deprecated.
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:param logical_line: The logical line to check.
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:param filename: The file name where the logical line exists.
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:returns: None if the logical line passes the check, otherwise a tuple
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is yielded that contains the offending index in logical line and a
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message describe the check validation failure.
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"""
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msg = ("N524: contextlib.nested is deprecated. With Python 2.7 and later "
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"the with-statement supports multiple nested objects. See https://"
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"docs.python.org/2/library/contextlib.html#contextlib.nested for "
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"more information.")
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if contextlib_nested.match(logical_line):
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yield(0, msg)
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def check_python3_xrange(logical_line):
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"""N525 - Do not use xrange.
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:param logical_line: The logical line to check.
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:returns: None if the logical line passes the check, otherwise a tuple
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is yielded that contains the offending index in logical line and a
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message describe the check validation failure.
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"""
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if re.search(r"\bxrange\s*\(", logical_line):
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yield(0, "N525: Do not use xrange. Use range, or six.moves.range for "
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"large loops.")
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def check_no_basestring(logical_line):
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"""N526 - basestring is not Python3-compatible.
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:param logical_line: The logical line to check.
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:returns: None if the logical line passes the check, otherwise a tuple
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is yielded that contains the offending index in logical line and a
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message describe the check validation failure.
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"""
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if re.search(r"\bbasestring\b", logical_line):
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msg = ("N526: basestring is not Python3-compatible, use "
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"six.string_types instead.")
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yield(0, msg)
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def check_python3_no_iteritems(logical_line):
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"""N527 - Use dict.items() instead of dict.iteritems().
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:param logical_line: The logical line to check.
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:returns: None if the logical line passes the check, otherwise a tuple
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is yielded that contains the offending index in logical line and a
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message describe the check validation failure.
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"""
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if re.search(r".*\.iteritems\(\)", logical_line):
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msg = ("N527: Use dict.items() instead of dict.iteritems() to be "
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"compatible with both Python 2 and Python 3. In Python 2, "
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"dict.items() may be inefficient for very large dictionaries. "
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"If you can prove that you need the optimization of an "
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"iterator for Python 2, then you can use six.iteritems(dict).")
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yield(0, msg)
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def no_mutable_default_args(logical_line):
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"""N529 - Method's default argument shouldn't be mutable.
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:param logical_line: The logical line to check.
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:returns: None if the logical line passes the check, otherwise a tuple
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is yielded that contains the offending index in logical line and a
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message describe the check validation failure.
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"""
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msg = "N529: Method's default argument shouldn't be mutable!"
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if mutable_default_args.match(logical_line):
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yield (0, msg)
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# Chances are that most projects will need to put an ignore on this rule
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# until they can fully migrate to the lib.
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def check_neutron_namespace_imports(logical_line):
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"""N530 - Direct neutron imports not allowed.
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:param logical_line: The logical line to check.
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:returns: None if the logical line passes the check, otherwise a tuple
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is yielded that contains the offending index in logical line and a
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message describe the check validation failure.
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"""
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x = _check_namespace_imports(
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'N530', 'neutron', 'neutron_lib.', logical_line,
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message_override="direct neutron imports not allowed")
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if x is not None:
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yield x
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def check_no_eventlet_imports(logical_line):
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"""N535 - Usage of Python eventlet module not allowed.
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:param logical_line: The logical line to check.
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:returns: None if the logical line passes the check, otherwise a tuple
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is yielded that contains the offending index in logical line and a
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message describe the check validation failure.
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"""
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if re.match(r'(import|from)\s+[(]?eventlet', logical_line):
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msg = 'N535: Usage of Python eventlet module not allowed'
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yield logical_line.index('eventlet'), msg
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def assert_equal_none(logical_line):
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"""N536 - Use assertIsNone."""
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if assert_equal_none_re.search(logical_line):
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msg = ("N536: Use assertIsNone rather than assertEqual "
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"to check for None values")
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yield logical_line.index('assert'), msg
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if assert_is_none_re.search(logical_line):
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msg = ("N536: Use assertIsNone or assertIsNotNone rather than "
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"assertIs or assertIsNone to check for None values.")
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yield logical_line.index('assert'), msg
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def factory(register):
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"""Hacking check factory for neutron-lib adopter compliant checks.
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Hacking check factory for use with tox.ini. This factory registers all
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neutron-lib adopter checks consumers should seek to comply with.
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:param register: The function to register the check functions with.
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:returns: None.
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"""
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register(use_jsonutils)
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register(check_no_contextlib_nested)
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register(check_python3_xrange)
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register(check_no_basestring)
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register(check_python3_no_iteritems)
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register(no_mutable_default_args)
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register(check_neutron_namespace_imports)
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register(translation_checks.no_translate_logs)
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register(translation_checks.check_log_warn_deprecated)
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register(translation_checks.check_raised_localized_exceptions)
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register(assert_equal_none)
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def _neutron_lib_factory(register):
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"""Hacking check factory for neutron-lib internal project checks.
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Hacking check factory for use with tox.ini. This factory registers all
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checks that are run with the neutron-lib project itself.
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:param register: The function to register the check functions with.
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:returns: None.
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"""
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factory(register)
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# neutron-lib project specific checks below
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register(check_no_eventlet_imports)
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