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cpython/Lib/test/re_tests.py

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#!/usr/bin/env python
# -*- mode: python -*-
# Re test suite and benchmark suite v1.5
# The 3 possible outcomes for each pattern
[SUCCEED, FAIL, SYNTAX_ERROR] = range(3)
# Benchmark suite (needs expansion)
#
# The benchmark suite does not test correctness, just speed. The
# first element of each tuple is the regex pattern; the second is a
# string to match it against. The benchmarking code will embed the
# second string inside several sizes of padding, to test how regex
# matching performs on large strings.
benchmarks = [
# test common prefix
('Python|Perl', 'Perl'), # Alternation
('(Python|Perl)', 'Perl'), # Grouped alternation
('Python|Perl|Tcl', 'Perl'), # Alternation
('(Python|Perl|Tcl)', 'Perl'), # Grouped alternation
('(Python)\\1', 'PythonPython'), # Backreference
('([0a-z][a-z0-9]*,)+', 'a5,b7,c9,'), # Disable the fastmap optimization
('([a-z][a-z0-9]*,)+', 'a5,b7,c9,'), # A few sets
('Python', 'Python'), # Simple text literal
('.*Python', 'Python'), # Bad text literal
('.*Python.*', 'Python'), # Worse text literal
('.*(Python)', 'Python'), # Bad text literal with grouping
]
# Test suite (for verifying correctness)
#
# The test suite is a list of 5- or 3-tuples. The 5 parts of a
# complete tuple are:
# element 0: a string containing the pattern
# 1: the string to match against the pattern
# 2: the expected result (SUCCEED, FAIL, SYNTAX_ERROR)
# 3: a string that will be eval()'ed to produce a test string.
# This is an arbitrary Python expression; the available
# variables are "found" (the whole match), and "g1", "g2", ...
# up to "g99" contain the contents of each group, or the
# string 'None' if the group wasn't given a value, or the
# string 'Error' if the group index was out of range;
# also "groups", the return value of m.group() (a tuple).
# 4: The expected result of evaluating the expression.
# If the two don't match, an error is reported.
#
# If the regex isn't expected to work, the latter two elements can be omitted.
tests = [
# Test ?P< and ?P= extensions
('(?P<foo_123', '', SYNTAX_ERROR), # Unterminated group identifier
('(?P<1>a)', '', SYNTAX_ERROR), # Begins with a digit
('(?P<!>a)', '', SYNTAX_ERROR), # Begins with an illegal char
('(?P<foo!>a)', '', SYNTAX_ERROR), # Begins with an illegal char
# Same tests, for the ?P= form
('(?P<foo_123>a)(?P=foo_123', 'aa', SYNTAX_ERROR),
('(?P<foo_123>a)(?P=1)', 'aa', SYNTAX_ERROR),
('(?P<foo_123>a)(?P=!)', 'aa', SYNTAX_ERROR),
('(?P<foo_123>a)(?P=foo_124', 'aa', SYNTAX_ERROR), # Backref to undefined group
('(?P<foo_123>a)', 'a', SUCCEED, 'g1', 'a'),
('(?P<foo_123>a)(?P=foo_123)', 'aa', SUCCEED, 'g1', 'a'),
# Test octal escapes
('\\1', 'a', SYNTAX_ERROR), # Backreference
('[\\1]', '\1', SUCCEED, 'found', '\1'), # Character
('\\09', chr(0) + '9', SUCCEED, 'found', chr(0) + '9'),
('\\141', 'a', SUCCEED, 'found', 'a'),
('(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)(l)\\119', 'abcdefghijklk9', SUCCEED, 'found+"-"+g11', 'abcdefghijklk9-k'),
# Test \0 is handled everywhere
(r'\0', '\0', SUCCEED, 'found', '\0'),
(r'[\0a]', '\0', SUCCEED, 'found', '\0'),
(r'[a\0]', '\0', SUCCEED, 'found', '\0'),
(r'[^a\0]', '\0', FAIL),
# Test various letter escapes
(r'\a[\b]\f\n\r\t\v', '\a\b\f\n\r\t\v', SUCCEED, 'found', '\a\b\f\n\r\t\v'),
(r'[\a][\b][\f][\n][\r][\t][\v]', '\a\b\f\n\r\t\v', SUCCEED, 'found', '\a\b\f\n\r\t\v'),
# NOTE: not an error under PCRE/PRE:
# (r'\u', '', SYNTAX_ERROR), # A Perl escape
(r'\c\e\g\h\i\j\k\m\o\p\q\y\z', 'ceghijkmopqyz', SUCCEED, 'found', 'ceghijkmopqyz'),
(r'\xff', '\377', SUCCEED, 'found', chr(255)),
# new \x semantics
(r'\x00ffffffffffffff', '\377', FAIL, 'found', chr(255)),
(r'\x00f', '\017', FAIL, 'found', chr(15)),
(r'\x00fe', '\376', FAIL, 'found', chr(254)),
# (r'\x00ffffffffffffff', '\377', SUCCEED, 'found', chr(255)),
# (r'\x00f', '\017', SUCCEED, 'found', chr(15)),
# (r'\x00fe', '\376', SUCCEED, 'found', chr(254)),
(r"^\w+=(\\[\000-\277]|[^\n\\])*", "SRC=eval.c g.c blah blah blah \\\\\n\tapes.c",
SUCCEED, 'found', "SRC=eval.c g.c blah blah blah \\\\"),
# Test that . only matches \n in DOTALL mode
('a.b', 'acb', SUCCEED, 'found', 'acb'),
('a.b', 'a\nb', FAIL),
('a.*b', 'acc\nccb', FAIL),
('a.{4,5}b', 'acc\nccb', FAIL),
('a.b', 'a\rb', SUCCEED, 'found', 'a\rb'),
('a.b(?s)', 'a\nb', SUCCEED, 'found', 'a\nb'),
('a.*(?s)b', 'acc\nccb', SUCCEED, 'found', 'acc\nccb'),
('(?s)a.{4,5}b', 'acc\nccb', SUCCEED, 'found', 'acc\nccb'),
('(?s)a.b', 'a\nb', SUCCEED, 'found', 'a\nb'),
(')', '', SYNTAX_ERROR), # Unmatched right bracket
('', '', SUCCEED, 'found', ''), # Empty pattern
('abc', 'abc', SUCCEED, 'found', 'abc'),
('abc', 'xbc', FAIL),
('abc', 'axc', FAIL),
('abc', 'abx', FAIL),
('abc', 'xabcy', SUCCEED, 'found', 'abc'),
('abc', 'ababc', SUCCEED, 'found', 'abc'),
('ab*c', 'abc', SUCCEED, 'found', 'abc'),
('ab*bc', 'abc', SUCCEED, 'found', 'abc'),
('ab*bc', 'abbc', SUCCEED, 'found', 'abbc'),
('ab*bc', 'abbbbc', SUCCEED, 'found', 'abbbbc'),
('ab+bc', 'abbc', SUCCEED, 'found', 'abbc'),
('ab+bc', 'abc', FAIL),
('ab+bc', 'abq', FAIL),
('ab+bc', 'abbbbc', SUCCEED, 'found', 'abbbbc'),
('ab?bc', 'abbc', SUCCEED, 'found', 'abbc'),
('ab?bc', 'abc', SUCCEED, 'found', 'abc'),
('ab?bc', 'abbbbc', FAIL),
('ab?c', 'abc', SUCCEED, 'found', 'abc'),
('^abc$', 'abc', SUCCEED, 'found', 'abc'),
('^abc$', 'abcc', FAIL),
('^abc', 'abcc', SUCCEED, 'found', 'abc'),
('^abc$', 'aabc', FAIL),
('abc$', 'aabc', SUCCEED, 'found', 'abc'),
('^', 'abc', SUCCEED, 'found+"-"', '-'),
('$', 'abc', SUCCEED, 'found+"-"', '-'),
('a.c', 'abc', SUCCEED, 'found', 'abc'),
('a.c', 'axc', SUCCEED, 'found', 'axc'),
('a.*c', 'axyzc', SUCCEED, 'found', 'axyzc'),
('a.*c', 'axyzd', FAIL),
('a[bc]d', 'abc', FAIL),
('a[bc]d', 'abd', SUCCEED, 'found', 'abd'),
('a[b-d]e', 'abd', FAIL),
('a[b-d]e', 'ace', SUCCEED, 'found', 'ace'),
('a[b-d]', 'aac', SUCCEED, 'found', 'ac'),
('a[-b]', 'a-', SUCCEED, 'found', 'a-'),
('a[\\-b]', 'a-', SUCCEED, 'found', 'a-'),
# NOTE: not an error under PCRE/PRE:
# ('a[b-]', 'a-', SYNTAX_ERROR),
('a[]b', '-', SYNTAX_ERROR),
('a[', '-', SYNTAX_ERROR),
('a\\', '-', SYNTAX_ERROR),
('abc)', '-', SYNTAX_ERROR),
('(abc', '-', SYNTAX_ERROR),
('a]', 'a]', SUCCEED, 'found', 'a]'),
('a[]]b', 'a]b', SUCCEED, 'found', 'a]b'),
('a[\]]b', 'a]b', SUCCEED, 'found', 'a]b'),
('a[^bc]d', 'aed', SUCCEED, 'found', 'aed'),
('a[^bc]d', 'abd', FAIL),
('a[^-b]c', 'adc', SUCCEED, 'found', 'adc'),
('a[^-b]c', 'a-c', FAIL),
('a[^]b]c', 'a]c', FAIL),
('a[^]b]c', 'adc', SUCCEED, 'found', 'adc'),
('\\ba\\b', 'a-', SUCCEED, '"-"', '-'),
('\\ba\\b', '-a', SUCCEED, '"-"', '-'),
('\\ba\\b', '-a-', SUCCEED, '"-"', '-'),
('\\by\\b', 'xy', FAIL),
('\\by\\b', 'yz', FAIL),
('\\by\\b', 'xyz', FAIL),
('x\\b', 'xyz', FAIL),
('x\\B', 'xyz', SUCCEED, '"-"', '-'),
('\\Bz', 'xyz', SUCCEED, '"-"', '-'),
('z\\B', 'xyz', FAIL),
('\\Bx', 'xyz', FAIL),
('\\Ba\\B', 'a-', FAIL, '"-"', '-'),
('\\Ba\\B', '-a', FAIL, '"-"', '-'),
('\\Ba\\B', '-a-', FAIL, '"-"', '-'),
('\\By\\B', 'xy', FAIL),
('\\By\\B', 'yz', FAIL),
('\\By\\b', 'xy', SUCCEED, '"-"', '-'),
('\\by\\B', 'yz', SUCCEED, '"-"', '-'),
('\\By\\B', 'xyz', SUCCEED, '"-"', '-'),
('ab|cd', 'abc', SUCCEED, 'found', 'ab'),
('ab|cd', 'abcd', SUCCEED, 'found', 'ab'),
('()ef', 'def', SUCCEED, 'found+"-"+g1', 'ef-'),
('$b', 'b', FAIL),
('a\\(b', 'a(b', SUCCEED, 'found+"-"+g1', 'a(b-Error'),
('a\\(*b', 'ab', SUCCEED, 'found', 'ab'),
('a\\(*b', 'a((b', SUCCEED, 'found', 'a((b'),
('a\\\\b', 'a\\b', SUCCEED, 'found', 'a\\b'),
('((a))', 'abc', SUCCEED, 'found+"-"+g1+"-"+g2', 'a-a-a'),
('(a)b(c)', 'abc', SUCCEED, 'found+"-"+g1+"-"+g2', 'abc-a-c'),
('a+b+c', 'aabbabc', SUCCEED, 'found', 'abc'),
('(a+|b)*', 'ab', SUCCEED, 'found+"-"+g1', 'ab-b'),
('(a+|b)+', 'ab', SUCCEED, 'found+"-"+g1', 'ab-b'),
('(a+|b)?', 'ab', SUCCEED, 'found+"-"+g1', 'a-a'),
(')(', '-', SYNTAX_ERROR),
('[^ab]*', 'cde', SUCCEED, 'found', 'cde'),
('abc', '', FAIL),
('a*', '', SUCCEED, 'found', ''),
('a|b|c|d|e', 'e', SUCCEED, 'found', 'e'),
('(a|b|c|d|e)f', 'ef', SUCCEED, 'found+"-"+g1', 'ef-e'),
('abcd*efg', 'abcdefg', SUCCEED, 'found', 'abcdefg'),
('ab*', 'xabyabbbz', SUCCEED, 'found', 'ab'),
('ab*', 'xayabbbz', SUCCEED, 'found', 'a'),
('(ab|cd)e', 'abcde', SUCCEED, 'found+"-"+g1', 'cde-cd'),
('[abhgefdc]ij', 'hij', SUCCEED, 'found', 'hij'),
('^(ab|cd)e', 'abcde', FAIL, 'xg1y', 'xy'),
('(abc|)ef', 'abcdef', SUCCEED, 'found+"-"+g1', 'ef-'),
('(a|b)c*d', 'abcd', SUCCEED, 'found+"-"+g1', 'bcd-b'),
('(ab|ab*)bc', 'abc', SUCCEED, 'found+"-"+g1', 'abc-a'),
('a([bc]*)c*', 'abc', SUCCEED, 'found+"-"+g1', 'abc-bc'),
('a([bc]*)(c*d)', 'abcd', SUCCEED, 'found+"-"+g1+"-"+g2', 'abcd-bc-d'),
('a([bc]+)(c*d)', 'abcd', SUCCEED, 'found+"-"+g1+"-"+g2', 'abcd-bc-d'),
('a([bc]*)(c+d)', 'abcd', SUCCEED, 'found+"-"+g1+"-"+g2', 'abcd-b-cd'),
('a[bcd]*dcdcde', 'adcdcde', SUCCEED, 'found', 'adcdcde'),
('a[bcd]+dcdcde', 'adcdcde', FAIL),
('(ab|a)b*c', 'abc', SUCCEED, 'found+"-"+g1', 'abc-ab'),
('((a)(b)c)(d)', 'abcd', SUCCEED, 'g1+"-"+g2+"-"+g3+"-"+g4', 'abc-a-b-d'),
('[a-zA-Z_][a-zA-Z0-9_]*', 'alpha', SUCCEED, 'found', 'alpha'),
('^a(bc+|b[eh])g|.h$', 'abh', SUCCEED, 'found+"-"+g1', 'bh-None'),
('(bc+d$|ef*g.|h?i(j|k))', 'effgz', SUCCEED, 'found+"-"+g1+"-"+g2', 'effgz-effgz-None'),
('(bc+d$|ef*g.|h?i(j|k))', 'ij', SUCCEED, 'found+"-"+g1+"-"+g2', 'ij-ij-j'),
('(bc+d$|ef*g.|h?i(j|k))', 'effg', FAIL),
('(bc+d$|ef*g.|h?i(j|k))', 'bcdd', FAIL),
('(bc+d$|ef*g.|h?i(j|k))', 'reffgz', SUCCEED, 'found+"-"+g1+"-"+g2', 'effgz-effgz-None'),
('(((((((((a)))))))))', 'a', SUCCEED, 'found', 'a'),
('multiple words of text', 'uh-uh', FAIL),
('multiple words', 'multiple words, yeah', SUCCEED, 'found', 'multiple words'),
('(.*)c(.*)', 'abcde', SUCCEED, 'found+"-"+g1+"-"+g2', 'abcde-ab-de'),
('\\((.*), (.*)\\)', '(a, b)', SUCCEED, 'g2+"-"+g1', 'b-a'),
('[k]', 'ab', FAIL),
('a[-]?c', 'ac', SUCCEED, 'found', 'ac'),
('(abc)\\1', 'abcabc', SUCCEED, 'g1', 'abc'),
('([a-c]*)\\1', 'abcabc', SUCCEED, 'g1', 'abc'),
('^(.+)?B', 'AB', SUCCEED, 'g1', 'A'),
('(a+).\\1$', 'aaaaa', SUCCEED, 'found+"-"+g1', 'aaaaa-aa'),
('^(a+).\\1$', 'aaaa', FAIL),
('(abc)\\1', 'abcabc', SUCCEED, 'found+"-"+g1', 'abcabc-abc'),
('([a-c]+)\\1', 'abcabc', SUCCEED, 'found+"-"+g1', 'abcabc-abc'),
('(a)\\1', 'aa', SUCCEED, 'found+"-"+g1', 'aa-a'),
('(a+)\\1', 'aa', SUCCEED, 'found+"-"+g1', 'aa-a'),
('(a+)+\\1', 'aa', SUCCEED, 'found+"-"+g1', 'aa-a'),
('(a).+\\1', 'aba', SUCCEED, 'found+"-"+g1', 'aba-a'),
('(a)ba*\\1', 'aba', SUCCEED, 'found+"-"+g1', 'aba-a'),
('(aa|a)a\\1$', 'aaa', SUCCEED, 'found+"-"+g1', 'aaa-a'),
('(a|aa)a\\1$', 'aaa', SUCCEED, 'found+"-"+g1', 'aaa-a'),
('(a+)a\\1$', 'aaa', SUCCEED, 'found+"-"+g1', 'aaa-a'),
('([abc]*)\\1', 'abcabc', SUCCEED, 'found+"-"+g1', 'abcabc-abc'),
('(a)(b)c|ab', 'ab', SUCCEED, 'found+"-"+g1+"-"+g2', 'ab-None-None'),
('(a)+x', 'aaax', SUCCEED, 'found+"-"+g1', 'aaax-a'),
('([ac])+x', 'aacx', SUCCEED, 'found+"-"+g1', 'aacx-c'),
('([^/]*/)*sub1/', 'd:msgs/tdir/sub1/trial/away.cpp', SUCCEED, 'found+"-"+g1', 'd:msgs/tdir/sub1/-tdir/'),
('([^.]*)\\.([^:]*):[T ]+(.*)', 'track1.title:TBlah blah blah', SUCCEED, 'found+"-"+g1+"-"+g2+"-"+g3', 'track1.title:TBlah blah blah-track1-title-Blah blah blah'),
('([^N]*N)+', 'abNNxyzN', SUCCEED, 'found+"-"+g1', 'abNNxyzN-xyzN'),
('([^N]*N)+', 'abNNxyz', SUCCEED, 'found+"-"+g1', 'abNN-N'),
('([abc]*)x', 'abcx', SUCCEED, 'found+"-"+g1', 'abcx-abc'),
('([abc]*)x', 'abc', FAIL),
('([xyz]*)x', 'abcx', SUCCEED, 'found+"-"+g1', 'x-'),
('(a)+b|aac', 'aac', SUCCEED, 'found+"-"+g1', 'aac-None'),
# Test symbolic groups
('(?P<i d>aaa)a', 'aaaa', SYNTAX_ERROR),
('(?P<id>aaa)a', 'aaaa', SUCCEED, 'found+"-"+id', 'aaaa-aaa'),
('(?P<id>aa)(?P=id)', 'aaaa', SUCCEED, 'found+"-"+id', 'aaaa-aa'),
('(?P<id>aa)(?P=xd)', 'aaaa', SYNTAX_ERROR),
# Test octal escapes/memory references
('\\1', 'a', SYNTAX_ERROR),
('\\09', chr(0) + '9', SUCCEED, 'found', chr(0) + '9'),
('\\141', 'a', SUCCEED, 'found', 'a'),
('(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)(l)\\119', 'abcdefghijklk9', SUCCEED, 'found+"-"+g11', 'abcdefghijklk9-k'),
# All tests from Perl
('abc', 'abc', SUCCEED, 'found', 'abc'),
('abc', 'xbc', FAIL),
('abc', 'axc', FAIL),
('abc', 'abx', FAIL),
('abc', 'xabcy', SUCCEED, 'found', 'abc'),
('abc', 'ababc', SUCCEED, 'found', 'abc'),
('ab*c', 'abc', SUCCEED, 'found', 'abc'),
('ab*bc', 'abc', SUCCEED, 'found', 'abc'),
('ab*bc', 'abbc', SUCCEED, 'found', 'abbc'),
('ab*bc', 'abbbbc', SUCCEED, 'found', 'abbbbc'),
('ab{0,}bc', 'abbbbc', SUCCEED, 'found', 'abbbbc'),
('ab+bc', 'abbc', SUCCEED, 'found', 'abbc'),
('ab+bc', 'abc', FAIL),
('ab+bc', 'abq', FAIL),
('ab{1,}bc', 'abq', FAIL),
('ab+bc', 'abbbbc', SUCCEED, 'found', 'abbbbc'),
('ab{1,}bc', 'abbbbc', SUCCEED, 'found', 'abbbbc'),
('ab{1,3}bc', 'abbbbc', SUCCEED, 'found', 'abbbbc'),
('ab{3,4}bc', 'abbbbc', SUCCEED, 'found', 'abbbbc'),
('ab{4,5}bc', 'abbbbc', FAIL),
('ab?bc', 'abbc', SUCCEED, 'found', 'abbc'),
('ab?bc', 'abc', SUCCEED, 'found', 'abc'),
('ab{0,1}bc', 'abc', SUCCEED, 'found', 'abc'),
('ab?bc', 'abbbbc', FAIL),
('ab?c', 'abc', SUCCEED, 'found', 'abc'),
('ab{0,1}c', 'abc', SUCCEED, 'found', 'abc'),
('^abc$', 'abc', SUCCEED, 'found', 'abc'),
('^abc$', 'abcc', FAIL),
('^abc', 'abcc', SUCCEED, 'found', 'abc'),
('^abc$', 'aabc', FAIL),
('abc$', 'aabc', SUCCEED, 'found', 'abc'),
('^', 'abc', SUCCEED, 'found', ''),
('$', 'abc', SUCCEED, 'found', ''),
('a.c', 'abc', SUCCEED, 'found', 'abc'),
('a.c', 'axc', SUCCEED, 'found', 'axc'),
('a.*c', 'axyzc', SUCCEED, 'found', 'axyzc'),
('a.*c', 'axyzd', FAIL),
('a[bc]d', 'abc', FAIL),
('a[bc]d', 'abd', SUCCEED, 'found', 'abd'),
('a[b-d]e', 'abd', FAIL),
('a[b-d]e', 'ace', SUCCEED, 'found', 'ace'),
('a[b-d]', 'aac', SUCCEED, 'found', 'ac'),
('a[-b]', 'a-', SUCCEED, 'found', 'a-'),
('a[b-]', 'a-', SUCCEED, 'found', 'a-'),
('a[b-a]', '-', SYNTAX_ERROR),
('a[]b', '-', SYNTAX_ERROR),
('a[', '-', SYNTAX_ERROR),
('a]', 'a]', SUCCEED, 'found', 'a]'),
('a[]]b', 'a]b', SUCCEED, 'found', 'a]b'),
('a[^bc]d', 'aed', SUCCEED, 'found', 'aed'),
('a[^bc]d', 'abd', FAIL),
('a[^-b]c', 'adc', SUCCEED, 'found', 'adc'),
('a[^-b]c', 'a-c', FAIL),
('a[^]b]c', 'a]c', FAIL),
('a[^]b]c', 'adc', SUCCEED, 'found', 'adc'),
('ab|cd', 'abc', SUCCEED, 'found', 'ab'),
('ab|cd', 'abcd', SUCCEED, 'found', 'ab'),
('()ef', 'def', SUCCEED, 'found+"-"+g1', 'ef-'),
('*a', '-', SYNTAX_ERROR),
('(*)b', '-', SYNTAX_ERROR),
('$b', 'b', FAIL),
('a\\', '-', SYNTAX_ERROR),
('a\\(b', 'a(b', SUCCEED, 'found+"-"+g1', 'a(b-Error'),
('a\\(*b', 'ab', SUCCEED, 'found', 'ab'),
('a\\(*b', 'a((b', SUCCEED, 'found', 'a((b'),
('a\\\\b', 'a\\b', SUCCEED, 'found', 'a\\b'),
('abc)', '-', SYNTAX_ERROR),
('(abc', '-', SYNTAX_ERROR),
('((a))', 'abc', SUCCEED, 'found+"-"+g1+"-"+g2', 'a-a-a'),
('(a)b(c)', 'abc', SUCCEED, 'found+"-"+g1+"-"+g2', 'abc-a-c'),
('a+b+c', 'aabbabc', SUCCEED, 'found', 'abc'),
('a{1,}b{1,}c', 'aabbabc', SUCCEED, 'found', 'abc'),
('a**', '-', SYNTAX_ERROR),
('a.+?c', 'abcabc', SUCCEED, 'found', 'abc'),
('(a+|b)*', 'ab', SUCCEED, 'found+"-"+g1', 'ab-b'),
('(a+|b){0,}', 'ab', SUCCEED, 'found+"-"+g1', 'ab-b'),
('(a+|b)+', 'ab', SUCCEED, 'found+"-"+g1', 'ab-b'),
('(a+|b){1,}', 'ab', SUCCEED, 'found+"-"+g1', 'ab-b'),
('(a+|b)?', 'ab', SUCCEED, 'found+"-"+g1', 'a-a'),
('(a+|b){0,1}', 'ab', SUCCEED, 'found+"-"+g1', 'a-a'),
(')(', '-', SYNTAX_ERROR),
('[^ab]*', 'cde', SUCCEED, 'found', 'cde'),
('abc', '', FAIL),
('a*', '', SUCCEED, 'found', ''),
('([abc])*d', 'abbbcd', SUCCEED, 'found+"-"+g1', 'abbbcd-c'),
('([abc])*bcd', 'abcd', SUCCEED, 'found+"-"+g1', 'abcd-a'),
('a|b|c|d|e', 'e', SUCCEED, 'found', 'e'),
('(a|b|c|d|e)f', 'ef', SUCCEED, 'found+"-"+g1', 'ef-e'),
('abcd*efg', 'abcdefg', SUCCEED, 'found', 'abcdefg'),
('ab*', 'xabyabbbz', SUCCEED, 'found', 'ab'),
('ab*', 'xayabbbz', SUCCEED, 'found', 'a'),
('(ab|cd)e', 'abcde', SUCCEED, 'found+"-"+g1', 'cde-cd'),
('[abhgefdc]ij', 'hij', SUCCEED, 'found', 'hij'),
('^(ab|cd)e', 'abcde', FAIL),
('(abc|)ef', 'abcdef', SUCCEED, 'found+"-"+g1', 'ef-'),
('(a|b)c*d', 'abcd', SUCCEED, 'found+"-"+g1', 'bcd-b'),
('(ab|ab*)bc', 'abc', SUCCEED, 'found+"-"+g1', 'abc-a'),
('a([bc]*)c*', 'abc', SUCCEED, 'found+"-"+g1', 'abc-bc'),
('a([bc]*)(c*d)', 'abcd', SUCCEED, 'found+"-"+g1+"-"+g2', 'abcd-bc-d'),
('a([bc]+)(c*d)', 'abcd', SUCCEED, 'found+"-"+g1+"-"+g2', 'abcd-bc-d'),
('a([bc]*)(c+d)', 'abcd', SUCCEED, 'found+"-"+g1+"-"+g2', 'abcd-b-cd'),
('a[bcd]*dcdcde', 'adcdcde', SUCCEED, 'found', 'adcdcde'),
('a[bcd]+dcdcde', 'adcdcde', FAIL),
('(ab|a)b*c', 'abc', SUCCEED, 'found+"-"+g1', 'abc-ab'),
('((a)(b)c)(d)', 'abcd', SUCCEED, 'g1+"-"+g2+"-"+g3+"-"+g4', 'abc-a-b-d'),
('[a-zA-Z_][a-zA-Z0-9_]*', 'alpha', SUCCEED, 'found', 'alpha'),
('^a(bc+|b[eh])g|.h$', 'abh', SUCCEED, 'found+"-"+g1', 'bh-None'),
('(bc+d$|ef*g.|h?i(j|k))', 'effgz', SUCCEED, 'found+"-"+g1+"-"+g2', 'effgz-effgz-None'),
('(bc+d$|ef*g.|h?i(j|k))', 'ij', SUCCEED, 'found+"-"+g1+"-"+g2', 'ij-ij-j'),
('(bc+d$|ef*g.|h?i(j|k))', 'effg', FAIL),
('(bc+d$|ef*g.|h?i(j|k))', 'bcdd', FAIL),
('(bc+d$|ef*g.|h?i(j|k))', 'reffgz', SUCCEED, 'found+"-"+g1+"-"+g2', 'effgz-effgz-None'),
('((((((((((a))))))))))', 'a', SUCCEED, 'g10', 'a'),
('((((((((((a))))))))))\\10', 'aa', SUCCEED, 'found', 'aa'),
# Python does not have the same rules for \\41 so this is a syntax error
# ('((((((((((a))))))))))\\41', 'aa', FAIL),
# ('((((((((((a))))))))))\\41', 'a!', SUCCEED, 'found', 'a!'),
('((((((((((a))))))))))\\41', '', SYNTAX_ERROR),
('(?i)((((((((((a))))))))))\\41', '', SYNTAX_ERROR),
('(((((((((a)))))))))', 'a', SUCCEED, 'found', 'a'),
('multiple words of text', 'uh-uh', FAIL),
('multiple words', 'multiple words, yeah', SUCCEED, 'found', 'multiple words'),
('(.*)c(.*)', 'abcde', SUCCEED, 'found+"-"+g1+"-"+g2', 'abcde-ab-de'),
('\\((.*), (.*)\\)', '(a, b)', SUCCEED, 'g2+"-"+g1', 'b-a'),
('[k]', 'ab', FAIL),
('a[-]?c', 'ac', SUCCEED, 'found', 'ac'),
('(abc)\\1', 'abcabc', SUCCEED, 'g1', 'abc'),
('([a-c]*)\\1', 'abcabc', SUCCEED, 'g1', 'abc'),
('(?i)abc', 'ABC', SUCCEED, 'found', 'ABC'),
('(?i)abc', 'XBC', FAIL),
('(?i)abc', 'AXC', FAIL),
('(?i)abc', 'ABX', FAIL),
('(?i)abc', 'XABCY', SUCCEED, 'found', 'ABC'),
('(?i)abc', 'ABABC', SUCCEED, 'found', 'ABC'),
('(?i)ab*c', 'ABC', SUCCEED, 'found', 'ABC'),
('(?i)ab*bc', 'ABC', SUCCEED, 'found', 'ABC'),
('(?i)ab*bc', 'ABBC', SUCCEED, 'found', 'ABBC'),
('(?i)ab*?bc', 'ABBBBC', SUCCEED, 'found', 'ABBBBC'),
('(?i)ab{0,}?bc', 'ABBBBC', SUCCEED, 'found', 'ABBBBC'),
('(?i)ab+?bc', 'ABBC', SUCCEED, 'found', 'ABBC'),
('(?i)ab+bc', 'ABC', FAIL),
('(?i)ab+bc', 'ABQ', FAIL),
('(?i)ab{1,}bc', 'ABQ', FAIL),
('(?i)ab+bc', 'ABBBBC', SUCCEED, 'found', 'ABBBBC'),
('(?i)ab{1,}?bc', 'ABBBBC', SUCCEED, 'found', 'ABBBBC'),
('(?i)ab{1,3}?bc', 'ABBBBC', SUCCEED, 'found', 'ABBBBC'),
('(?i)ab{3,4}?bc', 'ABBBBC', SUCCEED, 'found', 'ABBBBC'),
('(?i)ab{4,5}?bc', 'ABBBBC', FAIL),
('(?i)ab??bc', 'ABBC', SUCCEED, 'found', 'ABBC'),
('(?i)ab??bc', 'ABC', SUCCEED, 'found', 'ABC'),
('(?i)ab{0,1}?bc', 'ABC', SUCCEED, 'found', 'ABC'),
('(?i)ab??bc', 'ABBBBC', FAIL),
('(?i)ab??c', 'ABC', SUCCEED, 'found', 'ABC'),
('(?i)ab{0,1}?c', 'ABC', SUCCEED, 'found', 'ABC'),
('(?i)^abc$', 'ABC', SUCCEED, 'found', 'ABC'),
('(?i)^abc$', 'ABCC', FAIL),
('(?i)^abc', 'ABCC', SUCCEED, 'found', 'ABC'),
('(?i)^abc$', 'AABC', FAIL),
('(?i)abc$', 'AABC', SUCCEED, 'found', 'ABC'),
('(?i)^', 'ABC', SUCCEED, 'found', ''),
('(?i)$', 'ABC', SUCCEED, 'found', ''),
('(?i)a.c', 'ABC', SUCCEED, 'found', 'ABC'),
('(?i)a.c', 'AXC', SUCCEED, 'found', 'AXC'),
('(?i)a.*?c', 'AXYZC', SUCCEED, 'found', 'AXYZC'),
('(?i)a.*c', 'AXYZD', FAIL),
('(?i)a[bc]d', 'ABC', FAIL),
('(?i)a[bc]d', 'ABD', SUCCEED, 'found', 'ABD'),
('(?i)a[b-d]e', 'ABD', FAIL),
('(?i)a[b-d]e', 'ACE', SUCCEED, 'found', 'ACE'),
('(?i)a[b-d]', 'AAC', SUCCEED, 'found', 'AC'),
('(?i)a[-b]', 'A-', SUCCEED, 'found', 'A-'),
('(?i)a[b-]', 'A-', SUCCEED, 'found', 'A-'),
('(?i)a[b-a]', '-', SYNTAX_ERROR),
('(?i)a[]b', '-', SYNTAX_ERROR),
('(?i)a[', '-', SYNTAX_ERROR),
('(?i)a]', 'A]', SUCCEED, 'found', 'A]'),
('(?i)a[]]b', 'A]B', SUCCEED, 'found', 'A]B'),
('(?i)a[^bc]d', 'AED', SUCCEED, 'found', 'AED'),
('(?i)a[^bc]d', 'ABD', FAIL),
('(?i)a[^-b]c', 'ADC', SUCCEED, 'found', 'ADC'),
('(?i)a[^-b]c', 'A-C', FAIL),
('(?i)a[^]b]c', 'A]C', FAIL),
('(?i)a[^]b]c', 'ADC', SUCCEED, 'found', 'ADC'),
('(?i)ab|cd', 'ABC', SUCCEED, 'found', 'AB'),
('(?i)ab|cd', 'ABCD', SUCCEED, 'found', 'AB'),
('(?i)()ef', 'DEF', SUCCEED, 'found+"-"+g1', 'EF-'),
('(?i)*a', '-', SYNTAX_ERROR),
('(?i)(*)b', '-', SYNTAX_ERROR),
('(?i)$b', 'B', FAIL),
('(?i)a\\', '-', SYNTAX_ERROR),
('(?i)a\\(b', 'A(B', SUCCEED, 'found+"-"+g1', 'A(B-Error'),
('(?i)a\\(*b', 'AB', SUCCEED, 'found', 'AB'),
('(?i)a\\(*b', 'A((B', SUCCEED, 'found', 'A((B'),
('(?i)a\\\\b', 'A\\B', SUCCEED, 'found', 'A\\B'),
('(?i)abc)', '-', SYNTAX_ERROR),
('(?i)(abc', '-', SYNTAX_ERROR),
('(?i)((a))', 'ABC', SUCCEED, 'found+"-"+g1+"-"+g2', 'A-A-A'),
('(?i)(a)b(c)', 'ABC', SUCCEED, 'found+"-"+g1+"-"+g2', 'ABC-A-C'),
('(?i)a+b+c', 'AABBABC', SUCCEED, 'found', 'ABC'),
('(?i)a{1,}b{1,}c', 'AABBABC', SUCCEED, 'found', 'ABC'),
('(?i)a**', '-', SYNTAX_ERROR),
('(?i)a.+?c', 'ABCABC', SUCCEED, 'found', 'ABC'),
('(?i)a.*?c', 'ABCABC', SUCCEED, 'found', 'ABC'),
('(?i)a.{0,5}?c', 'ABCABC', SUCCEED, 'found', 'ABC'),
('(?i)(a+|b)*', 'AB', SUCCEED, 'found+"-"+g1', 'AB-B'),
('(?i)(a+|b){0,}', 'AB', SUCCEED, 'found+"-"+g1', 'AB-B'),
('(?i)(a+|b)+', 'AB', SUCCEED, 'found+"-"+g1', 'AB-B'),
('(?i)(a+|b){1,}', 'AB', SUCCEED, 'found+"-"+g1', 'AB-B'),
('(?i)(a+|b)?', 'AB', SUCCEED, 'found+"-"+g1', 'A-A'),
('(?i)(a+|b){0,1}', 'AB', SUCCEED, 'found+"-"+g1', 'A-A'),
('(?i)(a+|b){0,1}?', 'AB', SUCCEED, 'found+"-"+g1', '-None'),
('(?i))(', '-', SYNTAX_ERROR),
('(?i)[^ab]*', 'CDE', SUCCEED, 'found', 'CDE'),
('(?i)abc', '', FAIL),
('(?i)a*', '', SUCCEED, 'found', ''),
('(?i)([abc])*d', 'ABBBCD', SUCCEED, 'found+"-"+g1', 'ABBBCD-C'),
('(?i)([abc])*bcd', 'ABCD', SUCCEED, 'found+"-"+g1', 'ABCD-A'),
('(?i)a|b|c|d|e', 'E', SUCCEED, 'found', 'E'),
('(?i)(a|b|c|d|e)f', 'EF', SUCCEED, 'found+"-"+g1', 'EF-E'),
('(?i)abcd*efg', 'ABCDEFG', SUCCEED, 'found', 'ABCDEFG'),
('(?i)ab*', 'XABYABBBZ', SUCCEED, 'found', 'AB'),
('(?i)ab*', 'XAYABBBZ', SUCCEED, 'found', 'A'),
('(?i)(ab|cd)e', 'ABCDE', SUCCEED, 'found+"-"+g1', 'CDE-CD'),
('(?i)[abhgefdc]ij', 'HIJ', SUCCEED, 'found', 'HIJ'),
('(?i)^(ab|cd)e', 'ABCDE', FAIL),
('(?i)(abc|)ef', 'ABCDEF', SUCCEED, 'found+"-"+g1', 'EF-'),
('(?i)(a|b)c*d', 'ABCD', SUCCEED, 'found+"-"+g1', 'BCD-B'),
('(?i)(ab|ab*)bc', 'ABC', SUCCEED, 'found+"-"+g1', 'ABC-A'),
('(?i)a([bc]*)c*', 'ABC', SUCCEED, 'found+"-"+g1', 'ABC-BC'),
('(?i)a([bc]*)(c*d)', 'ABCD', SUCCEED, 'found+"-"+g1+"-"+g2', 'ABCD-BC-D'),
('(?i)a([bc]+)(c*d)', 'ABCD', SUCCEED, 'found+"-"+g1+"-"+g2', 'ABCD-BC-D'),
('(?i)a([bc]*)(c+d)', 'ABCD', SUCCEED, 'found+"-"+g1+"-"+g2', 'ABCD-B-CD'),
('(?i)a[bcd]*dcdcde', 'ADCDCDE', SUCCEED, 'found', 'ADCDCDE'),
('(?i)a[bcd]+dcdcde', 'ADCDCDE', FAIL),
('(?i)(ab|a)b*c', 'ABC', SUCCEED, 'found+"-"+g1', 'ABC-AB'),
('(?i)((a)(b)c)(d)', 'ABCD', SUCCEED, 'g1+"-"+g2+"-"+g3+"-"+g4', 'ABC-A-B-D'),
('(?i)[a-zA-Z_][a-zA-Z0-9_]*', 'ALPHA', SUCCEED, 'found', 'ALPHA'),
('(?i)^a(bc+|b[eh])g|.h$', 'ABH', SUCCEED, 'found+"-"+g1', 'BH-None'),
('(?i)(bc+d$|ef*g.|h?i(j|k))', 'EFFGZ', SUCCEED, 'found+"-"+g1+"-"+g2', 'EFFGZ-EFFGZ-None'),
('(?i)(bc+d$|ef*g.|h?i(j|k))', 'IJ', SUCCEED, 'found+"-"+g1+"-"+g2', 'IJ-IJ-J'),
('(?i)(bc+d$|ef*g.|h?i(j|k))', 'EFFG', FAIL),
('(?i)(bc+d$|ef*g.|h?i(j|k))', 'BCDD', FAIL),
('(?i)(bc+d$|ef*g.|h?i(j|k))', 'REFFGZ', SUCCEED, 'found+"-"+g1+"-"+g2', 'EFFGZ-EFFGZ-None'),
('(?i)((((((((((a))))))))))', 'A', SUCCEED, 'g10', 'A'),
('(?i)((((((((((a))))))))))\\10', 'AA', SUCCEED, 'found', 'AA'),
#('(?i)((((((((((a))))))))))\\41', 'AA', FAIL),
#('(?i)((((((((((a))))))))))\\41', 'A!', SUCCEED, 'found', 'A!'),
('(?i)(((((((((a)))))))))', 'A', SUCCEED, 'found', 'A'),
('(?i)(?:(?:(?:(?:(?:(?:(?:(?:(?:(a))))))))))', 'A', SUCCEED, 'g1', 'A'),
('(?i)(?:(?:(?:(?:(?:(?:(?:(?:(?:(a|b|c))))))))))', 'C', SUCCEED, 'g1', 'C'),
('(?i)multiple words of text', 'UH-UH', FAIL),
('(?i)multiple words', 'MULTIPLE WORDS, YEAH', SUCCEED, 'found', 'MULTIPLE WORDS'),
('(?i)(.*)c(.*)', 'ABCDE', SUCCEED, 'found+"-"+g1+"-"+g2', 'ABCDE-AB-DE'),
('(?i)\\((.*), (.*)\\)', '(A, B)', SUCCEED, 'g2+"-"+g1', 'B-A'),
('(?i)[k]', 'AB', FAIL),
# ('(?i)abcd', 'ABCD', SUCCEED, 'found+"-"+\\found+"-"+\\\\found', 'ABCD-$&-\\ABCD'),
# ('(?i)a(bc)d', 'ABCD', SUCCEED, 'g1+"-"+\\g1+"-"+\\\\g1', 'BC-$1-\\BC'),
('(?i)a[-]?c', 'AC', SUCCEED, 'found', 'AC'),
('(?i)(abc)\\1', 'ABCABC', SUCCEED, 'g1', 'ABC'),
('(?i)([a-c]*)\\1', 'ABCABC', SUCCEED, 'g1', 'ABC'),
('a(?!b).', 'abad', SUCCEED, 'found', 'ad'),
('a(?=d).', 'abad', SUCCEED, 'found', 'ad'),
('a(?=c|d).', 'abad', SUCCEED, 'found', 'ad'),
('a(?:b|c|d)(.)', 'ace', SUCCEED, 'g1', 'e'),
('a(?:b|c|d)*(.)', 'ace', SUCCEED, 'g1', 'e'),
('a(?:b|c|d)+?(.)', 'ace', SUCCEED, 'g1', 'e'),
('a(?:b|(c|e){1,2}?|d)+?(.)', 'ace', SUCCEED, 'g1 + g2', 'ce'),
('^(.+)?B', 'AB', SUCCEED, 'g1', 'A'),
# Comments using the (?#...) syntax
('w(?# comment', 'w', SYNTAX_ERROR),
('w(?# comment 1)xy(?# comment 2)z', 'wxyz', SUCCEED, 'found', 'wxyz'),
# Check odd placement of embedded pattern modifiers
# not an error under PCRE/PRE:
('w(?i)', 'W', SUCCEED, 'found', 'W'),
# ('w(?i)', 'W', SYNTAX_ERROR),
# Comments using the x embedded pattern modifier
("""(?x)w# comment 1
x y
# comment 2
z""", 'wxyz', SUCCEED, 'found', 'wxyz'),
# using the m embedded pattern modifier
('^abc', """jkl
abc
xyz""", FAIL),
('(?m)^abc', """jkl
abc
xyz""", SUCCEED, 'found', 'abc'),
('(?m)abc$', """jkl
xyzabc
123""", SUCCEED, 'found', 'abc'),
# using the s embedded pattern modifier
('a.b', 'a\nb', FAIL),
('(?s)a.b', 'a\nb', SUCCEED, 'found', 'a\nb'),
# test \w, etc. both inside and outside character classes
('\\w+', '--ab_cd0123--', SUCCEED, 'found', 'ab_cd0123'),
('[\\w]+', '--ab_cd0123--', SUCCEED, 'found', 'ab_cd0123'),
('\\D+', '1234abc5678', SUCCEED, 'found', 'abc'),
('[\\D]+', '1234abc5678', SUCCEED, 'found', 'abc'),
('[\\da-fA-F]+', '123abc', SUCCEED, 'found', '123abc'),
# not an error under PCRE/PRE:
# ('[\\d-x]', '-', SYNTAX_ERROR),
(r'([\s]*)([\S]*)([\s]*)', ' testing!1972', SUCCEED, 'g3+g2+g1', 'testing!1972 '),
(r'(\s*)(\S*)(\s*)', ' testing!1972', SUCCEED, 'g3+g2+g1', 'testing!1972 '),
(r'\xff', '\377', SUCCEED, 'found', chr(255)),
# new \x semantics
(r'\x00ff', '\377', FAIL),
# (r'\x00ff', '\377', SUCCEED, 'found', chr(255)),
(r'\t\n\v\r\f\a\g', '\t\n\v\r\f\ag', SUCCEED, 'found', '\t\n\v\r\f\ag'),
('\t\n\v\r\f\a\g', '\t\n\v\r\f\ag', SUCCEED, 'found', '\t\n\v\r\f\ag'),
(r'\t\n\v\r\f\a', '\t\n\v\r\f\a', SUCCEED, 'found', chr(9)+chr(10)+chr(11)+chr(13)+chr(12)+chr(7)),
(r'[\t][\n][\v][\r][\f][\b]', '\t\n\v\r\f\b', SUCCEED, 'found', '\t\n\v\r\f\b'),
#
# post-1.5.2 additions
# xmllib problem
(r'(([a-z]+):)?([a-z]+)$', 'smil', SUCCEED, 'g1+"-"+g2+"-"+g3', 'None-None-smil'),
# bug 110866: reference to undefined group
(r'((.)\1+)', '', SYNTAX_ERROR),
# bug 111869: search (PRE/PCRE fails on this one, SRE doesn't)
(r'.*d', 'abc\nabd', SUCCEED, 'found', 'abd'),
# bug 112468: various expected syntax errors
(r'(', '', SYNTAX_ERROR),
(r'[\41]', '!', SUCCEED, 'found', '!'),
# bug 114033: nothing to repeat
(r'(x?)?', 'x', SUCCEED, 'found', 'x'),
# bug 115040: rescan if flags are modified inside pattern
(r' (?x)foo ', 'foo', SUCCEED, 'found', 'foo'),
# bug 115618: negative lookahead
(r'(?<!abc)(d.f)', 'abcdefdof', SUCCEED, 'found', 'dof'),
# bug 116251: character class bug
(r'[\w-]+', 'laser_beam', SUCCEED, 'found', 'laser_beam'),
# bug 123769+127259: non-greedy backtracking bug
(r'.*?\S *:', 'xx:', SUCCEED, 'found', 'xx:'),
(r'a[ ]*?\ (\d+).*', 'a 10', SUCCEED, 'found', 'a 10'),
(r'a[ ]*?\ (\d+).*', 'a 10', SUCCEED, 'found', 'a 10'),
# bug 127259: \Z shouldn't depend on multiline mode
(r'(?ms).*?x\s*\Z(.*)','xx\nx\n', SUCCEED, 'g1', ''),
# bug 128899: uppercase literals under the ignorecase flag
(r'(?i)M+', 'MMM', SUCCEED, 'found', 'MMM'),
(r'(?i)m+', 'MMM', SUCCEED, 'found', 'MMM'),
(r'(?i)[M]+', 'MMM', SUCCEED, 'found', 'MMM'),
(r'(?i)[m]+', 'MMM', SUCCEED, 'found', 'MMM'),
]
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