72 lines
2.6 KiB
Python
72 lines
2.6 KiB
Python
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#
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# regexcheck.py: check a regular expression against lists of matching and non-matching strings
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#
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# Copyright (C) 2015 Red Hat, Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU Lesser General Public License as published
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# by the Free Software Foundation; either version 2.1 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# Author: David Shea <dshea@redhat.com>
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def regex_match(expression, goodlist, badlist):
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""" Check that a regular expression matches and does not match lists of strings.
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This method will print a message for any failure and return a a bool
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to indicate whether the testcase passed.
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:param expression: a compiled regular expression object
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:param goodlist: a list of strings expected to be matched by expression
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:param badlist: a list of strings expected not to be matched by expression
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:returns: True if all strings in the lists matched or did not match as expected
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:rtype: bool
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"""
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success = True
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for good in goodlist:
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if expression.match(good) is None:
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success = False
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print("Good string %s did not match expression" % good)
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for bad in badlist:
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if expression.match(bad) is not None:
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success = False
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print("Bad string %s matched expression" % bad)
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return success
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def regex_group(expression, test_cases):
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""" Check that a regex parses strings into expected groups.
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Test cases is a list of tuples of the form (test_string, expected_result)
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where expected_result is the groups tuples that should be returned by
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regex.match.
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:param expression: a compiled expression object
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:param test_cases: a list of test strings and expected results
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:returns: True if all test cases return the expected groups
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:rtype: bool
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"""
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success = True
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for test_str, result in test_cases:
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match = expression.match(test_str)
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if match is not None:
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match = match.groups()
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if match != result:
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print("Test case `%s' did not parse as `%s': %s" % (test_str, result, match))
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success = False
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return success
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