mirror of https://github.com/python/cpython
399 lines
17 KiB
Python
399 lines
17 KiB
Python
import sys
|
|
sys.path = ['.'] + sys.path
|
|
|
|
from test.test_support import verbose, run_suite
|
|
import re
|
|
from sre import Scanner
|
|
import sys, os, traceback
|
|
|
|
# Misc tests from Tim Peters' re.doc
|
|
|
|
import unittest
|
|
|
|
class ReTests(unittest.TestCase):
|
|
def test_search_star_plus(self):
|
|
self.assertEqual(re.search('x*', 'axx').span(0), (0, 0))
|
|
self.assertEqual(re.search('x*', 'axx').span(), (0, 0))
|
|
self.assertEqual(re.search('x+', 'axx').span(0), (1, 3))
|
|
self.assertEqual(re.search('x+', 'axx').span(), (1, 3))
|
|
self.assertEqual(re.search('x', 'aaa') is None, True)
|
|
self.assertEqual(re.match('a*', 'xxx').span(0), (0, 0))
|
|
self.assertEqual(re.match('a*', 'xxx').span(), (0, 0))
|
|
self.assertEqual(re.match('x*', 'xxxa').span(0), (0, 3))
|
|
self.assertEqual(re.match('x*', 'xxxa').span(), (0, 3))
|
|
self.assertEqual(re.match('a+', 'xxx') is None, True)
|
|
|
|
def bump_num(self, matchobj):
|
|
int_value = int(matchobj.group(0))
|
|
return str(int_value + 1)
|
|
|
|
def test_basic_re_sub(self):
|
|
self.assertEqual(re.sub("(?i)b+", "x", "bbbb BBBB"), 'x x')
|
|
self.assertEqual(re.sub(r'\d+', self.bump_num, '08.2 -2 23x99y'),
|
|
'9.3 -3 24x100y')
|
|
self.assertEqual(re.sub(r'\d+', self.bump_num, '08.2 -2 23x99y', 3),
|
|
'9.3 -3 23x99y')
|
|
|
|
self.assertEqual(re.sub('.', lambda m: r"\n", 'x'), '\\n')
|
|
self.assertEqual(re.sub('.', r"\n", 'x'), '\n')
|
|
|
|
s = r"\1\1"
|
|
self.assertEqual(re.sub('(.)', s, 'x'), 'xx')
|
|
self.assertEqual(re.sub('(.)', re.escape(s), 'x'), s)
|
|
self.assertEqual(re.sub('(.)', lambda m: s, 'x'), s)
|
|
|
|
self.assertEqual(re.sub('(?P<a>x)', '\g<a>\g<a>', 'xx'), 'xxxx')
|
|
self.assertEqual(re.sub('(?P<a>x)', '\g<a>\g<1>', 'xx'), 'xxxx')
|
|
self.assertEqual(re.sub('(?P<unk>x)', '\g<unk>\g<unk>', 'xx'), 'xxxx')
|
|
self.assertEqual(re.sub('(?P<unk>x)', '\g<1>\g<1>', 'xx'), 'xxxx')
|
|
|
|
self.assertEqual(re.sub('a',r'\t\n\v\r\f\a\b\B\Z\a\A\w\W\s\S\d\D','a'),
|
|
'\t\n\v\r\f\a\b\\B\\Z\a\\A\\w\\W\\s\\S\\d\\D')
|
|
self.assertEqual(re.sub('a', '\t\n\v\r\f\a', 'a'), '\t\n\v\r\f\a')
|
|
self.assertEqual(re.sub('a', '\t\n\v\r\f\a', 'a'),
|
|
(chr(9)+chr(10)+chr(11)+chr(13)+chr(12)+chr(7)))
|
|
|
|
self.assertEqual(re.sub('^\s*', 'X', 'test'), 'Xtest')
|
|
|
|
def test_bug_449964(self):
|
|
# fails for group followed by other escape
|
|
self.assertEqual(re.sub(r'(?P<unk>x)', '\g<1>\g<1>\\b', 'xx'),
|
|
'xx\bxx\b')
|
|
|
|
def test_bug_449000(self):
|
|
# Test for sub() on escaped characters
|
|
self.assertEqual(re.sub(r'\r\n', r'\n', 'abc\r\ndef\r\n'),
|
|
'abc\ndef\n')
|
|
self.assertEqual(re.sub('\r\n', r'\n', 'abc\r\ndef\r\n'),
|
|
'abc\ndef\n')
|
|
self.assertEqual(re.sub(r'\r\n', '\n', 'abc\r\ndef\r\n'),
|
|
'abc\ndef\n')
|
|
self.assertEqual(re.sub('\r\n', '\n', 'abc\r\ndef\r\n'),
|
|
'abc\ndef\n')
|
|
|
|
def test_qualified_re_sub(self):
|
|
self.assertEqual(re.sub('a', 'b', 'aaaaa'), 'bbbbb')
|
|
self.assertEqual(re.sub('a', 'b', 'aaaaa', 1), 'baaaa')
|
|
|
|
def test_bug_114660(self):
|
|
self.assertEqual(re.sub(r'(\S)\s+(\S)', r'\1 \2', 'hello there'),
|
|
'hello there')
|
|
|
|
def test_bug_462270(self):
|
|
# Test for empty sub() behaviour, see SF bug #462270
|
|
self.assertEqual(re.sub('x*', '-', 'abxd'), '-a-b-d-')
|
|
self.assertEqual(re.sub('x+', '-', 'abxd'), 'ab-d')
|
|
|
|
def test_symbolic_refs(self):
|
|
self.assertRaises(re.error, re.sub, '(?P<a>x)', '\g<a', 'xx')
|
|
self.assertRaises(re.error, re.sub, '(?P<a>x)', '\g<', 'xx')
|
|
self.assertRaises(re.error, re.sub, '(?P<a>x)', '\g', 'xx')
|
|
self.assertRaises(re.error, re.sub, '(?P<a>x)', '\g<a a>', 'xx')
|
|
self.assertRaises(re.error, re.sub, '(?P<a>x)', '\g<1a1>', 'xx')
|
|
self.assertRaises(IndexError, re.sub, '(?P<a>x)', '\g<ab>', 'xx')
|
|
self.assertRaises(re.error, re.sub, '(?P<a>x)|(?P<b>y)', '\g<b>', 'xx')
|
|
self.assertRaises(re.error, re.sub, '(?P<a>x)|(?P<b>y)', '\\2', 'xx')
|
|
|
|
def test_re_subn(self):
|
|
self.assertEqual(re.subn("(?i)b+", "x", "bbbb BBBB"), ('x x', 2))
|
|
self.assertEqual(re.subn("b+", "x", "bbbb BBBB"), ('x BBBB', 1))
|
|
self.assertEqual(re.subn("b+", "x", "xyz"), ('xyz', 0))
|
|
self.assertEqual(re.subn("b*", "x", "xyz"), ('xxxyxzx', 4))
|
|
self.assertEqual(re.subn("b*", "x", "xyz", 2), ('xxxyz', 2))
|
|
|
|
def test_re_split(self):
|
|
self.assertEqual(re.split(":", ":a:b::c"), ['', 'a', 'b', '', 'c'])
|
|
self.assertEqual(re.split(":*", ":a:b::c"), ['', 'a', 'b', 'c'])
|
|
self.assertEqual(re.split("(:*)", ":a:b::c"),
|
|
['', ':', 'a', ':', 'b', '::', 'c'])
|
|
self.assertEqual(re.split("(?::*)", ":a:b::c"), ['', 'a', 'b', 'c'])
|
|
self.assertEqual(re.split("(:)*", ":a:b::c"),
|
|
['', ':', 'a', ':', 'b', ':', 'c'])
|
|
self.assertEqual(re.split("([b:]+)", ":a:b::c"),
|
|
['', ':', 'a', ':b::', 'c'])
|
|
self.assertEqual(re.split("(b)|(:+)", ":a:b::c"),
|
|
['', None, ':', 'a', None, ':', '', 'b', None, '',
|
|
None, '::', 'c'])
|
|
self.assertEqual(re.split("(?:b)|(?::+)", ":a:b::c"),
|
|
['', 'a', '', '', 'c'])
|
|
|
|
def test_qualified_re_split(self):
|
|
self.assertEqual(re.split(":", ":a:b::c", 2), ['', 'a', 'b::c'])
|
|
self.assertEqual(re.split(':', 'a:b:c:d', 2), ['a', 'b', 'c:d'])
|
|
self.assertEqual(re.split("(:)", ":a:b::c", 2),
|
|
['', ':', 'a', ':', 'b::c'])
|
|
self.assertEqual(re.split("(:*)", ":a:b::c", 2),
|
|
['', ':', 'a', ':', 'b::c'])
|
|
|
|
def test_re_findall(self):
|
|
self.assertEqual(re.findall(":+", "abc"), [])
|
|
self.assertEqual(re.findall(":+", "a:b::c:::d"), [":", "::", ":::"])
|
|
self.assertEqual(re.findall("(:+)", "a:b::c:::d"), [":", "::", ":::"])
|
|
self.assertEqual(re.findall("(:)(:*)", "a:b::c:::d"), [(":", ""),
|
|
(":", ":"),
|
|
(":", "::")])
|
|
|
|
def test_re_match(self):
|
|
# No groups at all
|
|
m = re.match('a', 'a')
|
|
self.assertEqual(m.groups(), ())
|
|
# A single group
|
|
m = re.match('(a)', 'a')
|
|
self.assertEqual(m.groups(), ('a',))
|
|
|
|
pat = re.compile('((a)|(b))(c)?')
|
|
self.assertEqual(pat.match('a').groups(), ('a', 'a', None, None))
|
|
self.assertEqual(pat.match('b').groups(), ('b', None, 'b', None))
|
|
self.assertEqual(pat.match('ac').groups(), ('a', 'a', None, 'c'))
|
|
self.assertEqual(pat.match('bc').groups(), ('b', None, 'b', 'c'))
|
|
self.assertEqual(pat.match('bc').groups(""), ('b', "", 'b', 'c'))
|
|
|
|
# A single group
|
|
m = re.match('(a)', 'a')
|
|
self.assertEqual(m.group(0), 'a')
|
|
self.assertEqual(m.group(0), 'a')
|
|
self.assertEqual(m.group(1), 'a')
|
|
self.assertEqual(m.group(1, 1), ('a', 'a'))
|
|
|
|
pat = re.compile('(?:(?P<a1>a)|(?P<b2>b))(?P<c3>c)?')
|
|
self.assertEqual(pat.match('a').group(1, 2, 3), ('a', None, None))
|
|
self.assertEqual(pat.match('b').group('a1', 'b2', 'c3'),
|
|
(None, 'b', None))
|
|
self.assertEqual(pat.match('ac').group(1, 'b2', 3), ('a', None, 'c'))
|
|
|
|
def test_re_escape(self):
|
|
p=""
|
|
for i in range(0, 256):
|
|
p = p + chr(i)
|
|
self.assertEqual(re.match(re.escape(chr(i)), chr(i)) is not None,
|
|
True)
|
|
self.assertEqual(re.match(re.escape(chr(i)), chr(i)).span(), (0,1))
|
|
|
|
pat=re.compile(re.escape(p))
|
|
self.assertEqual(pat.match(p) is not None, True)
|
|
self.assertEqual(pat.match(p).span(), (0,256))
|
|
|
|
def test_pickling(self):
|
|
import pickle
|
|
self.pickle_test(pickle)
|
|
import cPickle
|
|
self.pickle_test(cPickle)
|
|
|
|
def pickle_test(self, pickle):
|
|
oldpat = re.compile('a(?:b|(c|e){1,2}?|d)+?(.)')
|
|
s = pickle.dumps(oldpat)
|
|
newpat = pickle.loads(s)
|
|
self.assertEqual(oldpat, newpat)
|
|
|
|
def test_constants(self):
|
|
self.assertEqual(re.I, re.IGNORECASE)
|
|
self.assertEqual(re.L, re.LOCALE)
|
|
self.assertEqual(re.M, re.MULTILINE)
|
|
self.assertEqual(re.S, re.DOTALL)
|
|
self.assertEqual(re.X, re.VERBOSE)
|
|
|
|
def test_flags(self):
|
|
for flag in [re.I, re.M, re.X, re.S, re.L]:
|
|
self.assertNotEqual(re.compile('^pattern$', flag), None)
|
|
|
|
def test_sre_character_literals(self):
|
|
for i in [0, 8, 16, 32, 64, 127, 128, 255]:
|
|
self.assertNotEqual(re.match(r"\%03o" % i, chr(i)), None)
|
|
self.assertNotEqual(re.match(r"\%03o0" % i, chr(i)+"0"), None)
|
|
self.assertNotEqual(re.match(r"\%03o8" % i, chr(i)+"8"), None)
|
|
self.assertNotEqual(re.match(r"\x%02x" % i, chr(i)), None)
|
|
self.assertNotEqual(re.match(r"\x%02x0" % i, chr(i)+"0"), None)
|
|
self.assertNotEqual(re.match(r"\x%02xz" % i, chr(i)+"z"), None)
|
|
self.assertRaises(re.error, re.match, "\911", "")
|
|
|
|
def test_bug_113254(self):
|
|
self.assertEqual(re.match(r'(a)|(b)', 'b').start(1), -1)
|
|
self.assertEqual(re.match(r'(a)|(b)', 'b').end(1), -1)
|
|
self.assertEqual(re.match(r'(a)|(b)', 'b').span(1), (-1, -1))
|
|
|
|
def test_bug_527371(self):
|
|
# bug described in patches 527371/672491
|
|
self.assertEqual(re.match(r'(a)?a','a').lastindex, None)
|
|
self.assertEqual(re.match(r'(a)(b)?b','ab').lastindex, 1)
|
|
self.assertEqual(re.match(r'(?P<a>a)(?P<b>b)?b','ab').lastgroup, 'a')
|
|
self.assertEqual(re.match("(?P<a>a(b))", "ab").lastgroup, 'a')
|
|
self.assertEqual(re.match("((a))", "a").lastindex, 1)
|
|
|
|
def test_bug_545855(self):
|
|
# bug 545855 -- This pattern failed to cause a compile error as it
|
|
# should, instead provoking a TypeError.
|
|
self.assertRaises(re.error, re.compile, 'foo[a-')
|
|
|
|
def test_bug_418626(self):
|
|
# bugs 418626 at al. -- Testing Greg Chapman's addition of op code
|
|
# SRE_OP_MIN_REPEAT_ONE for eliminating recursion on simple uses of
|
|
# pattern '*?' on a long string.
|
|
self.assertEqual(re.match('.*?c', 10000*'ab'+'cd').end(0), 20001)
|
|
self.assertEqual(re.match('.*?cd', 5000*'ab'+'c'+5000*'ab'+'cde').end(0),
|
|
20003)
|
|
self.assertEqual(re.match('.*?cd', 20000*'abc'+'de').end(0), 60001)
|
|
# non-simple '*?' still recurses and hits the recursion limit
|
|
self.assertRaises(RuntimeError, re.search, '(a|b)*?c', 10000*'ab'+'cd')
|
|
|
|
def test_bug_612074(self):
|
|
pat=u"["+re.escape(u"\u2039")+u"]"
|
|
self.assertEqual(re.compile(pat) and 1, 1)
|
|
|
|
def test_stack_overflow(self):
|
|
# nasty case that overflows the straightforward recursive
|
|
# implementation of repeated groups.
|
|
self.assertRaises(RuntimeError, re.match, '(x)*', 50000*'x')
|
|
self.assertRaises(RuntimeError, re.match, '(x)*y', 50000*'x'+'y')
|
|
self.assertRaises(RuntimeError, re.match, '(x)*?y', 50000*'x'+'y')
|
|
|
|
def test_scanner(self):
|
|
def s_ident(scanner, token): return token
|
|
def s_operator(scanner, token): return "op%s" % token
|
|
def s_float(scanner, token): return float(token)
|
|
def s_int(scanner, token): return int(token)
|
|
|
|
scanner = Scanner([
|
|
(r"[a-zA-Z_]\w*", s_ident),
|
|
(r"\d+\.\d*", s_float),
|
|
(r"\d+", s_int),
|
|
(r"=|\+|-|\*|/", s_operator),
|
|
(r"\s+", None),
|
|
])
|
|
|
|
self.assertEqual(scanner.scan("sum = 3*foo + 312.50 + bar"),
|
|
(['sum', 'op=', 3, 'op*', 'foo', 'op+', 312.5,
|
|
'op+', 'bar'], ''))
|
|
|
|
def run_re_tests():
|
|
from test.re_tests import benchmarks, tests, SUCCEED, FAIL, SYNTAX_ERROR
|
|
if verbose:
|
|
print 'Running re_tests test suite'
|
|
else:
|
|
# To save time, only run the first and last 10 tests
|
|
#tests = tests[:10] + tests[-10:]
|
|
pass
|
|
|
|
for t in tests:
|
|
sys.stdout.flush()
|
|
pattern = s = outcome = repl = expected = None
|
|
if len(t) == 5:
|
|
pattern, s, outcome, repl, expected = t
|
|
elif len(t) == 3:
|
|
pattern, s, outcome = t
|
|
else:
|
|
raise ValueError, ('Test tuples should have 3 or 5 fields', t)
|
|
|
|
try:
|
|
obj = re.compile(pattern)
|
|
except re.error:
|
|
if outcome == SYNTAX_ERROR: pass # Expected a syntax error
|
|
else:
|
|
print '=== Syntax error:', t
|
|
except KeyboardInterrupt: raise KeyboardInterrupt
|
|
except:
|
|
print '*** Unexpected error ***', t
|
|
if verbose:
|
|
traceback.print_exc(file=sys.stdout)
|
|
else:
|
|
try:
|
|
result = obj.search(s)
|
|
except re.error, msg:
|
|
print '=== Unexpected exception', t, repr(msg)
|
|
if outcome == SYNTAX_ERROR:
|
|
# This should have been a syntax error; forget it.
|
|
pass
|
|
elif outcome == FAIL:
|
|
if result is None: pass # No match, as expected
|
|
else: print '=== Succeeded incorrectly', t
|
|
elif outcome == SUCCEED:
|
|
if result is not None:
|
|
# Matched, as expected, so now we compute the
|
|
# result string and compare it to our expected result.
|
|
start, end = result.span(0)
|
|
vardict={'found': result.group(0),
|
|
'groups': result.group(),
|
|
'flags': result.re.flags}
|
|
for i in range(1, 100):
|
|
try:
|
|
gi = result.group(i)
|
|
# Special hack because else the string concat fails:
|
|
if gi is None:
|
|
gi = "None"
|
|
except IndexError:
|
|
gi = "Error"
|
|
vardict['g%d' % i] = gi
|
|
for i in result.re.groupindex.keys():
|
|
try:
|
|
gi = result.group(i)
|
|
if gi is None:
|
|
gi = "None"
|
|
except IndexError:
|
|
gi = "Error"
|
|
vardict[i] = gi
|
|
repl = eval(repl, vardict)
|
|
if repl != expected:
|
|
print '=== grouping error', t,
|
|
print repr(repl) + ' should be ' + repr(expected)
|
|
else:
|
|
print '=== Failed incorrectly', t
|
|
|
|
# Try the match on a unicode string, and check that it
|
|
# still succeeds.
|
|
try:
|
|
result = obj.search(unicode(s, "latin-1"))
|
|
if result is None:
|
|
print '=== Fails on unicode match', t
|
|
except NameError:
|
|
continue # 1.5.2
|
|
except TypeError:
|
|
continue # unicode test case
|
|
|
|
# Try the match on a unicode pattern, and check that it
|
|
# still succeeds.
|
|
obj=re.compile(unicode(pattern, "latin-1"))
|
|
result = obj.search(s)
|
|
if result is None:
|
|
print '=== Fails on unicode pattern match', t
|
|
|
|
# Try the match with the search area limited to the extent
|
|
# of the match and see if it still succeeds. \B will
|
|
# break (because it won't match at the end or start of a
|
|
# string), so we'll ignore patterns that feature it.
|
|
|
|
if pattern[:2] != '\\B' and pattern[-2:] != '\\B' \
|
|
and result is not None:
|
|
obj = re.compile(pattern)
|
|
result = obj.search(s, result.start(0), result.end(0) + 1)
|
|
if result is None:
|
|
print '=== Failed on range-limited match', t
|
|
|
|
# Try the match with IGNORECASE enabled, and check that it
|
|
# still succeeds.
|
|
obj = re.compile(pattern, re.IGNORECASE)
|
|
result = obj.search(s)
|
|
if result is None:
|
|
print '=== Fails on case-insensitive match', t
|
|
|
|
# Try the match with LOCALE enabled, and check that it
|
|
# still succeeds.
|
|
obj = re.compile(pattern, re.LOCALE)
|
|
result = obj.search(s)
|
|
if result is None:
|
|
print '=== Fails on locale-sensitive match', t
|
|
|
|
# Try the match with UNICODE locale enabled, and check
|
|
# that it still succeeds.
|
|
obj = re.compile(pattern, re.UNICODE)
|
|
result = obj.search(s)
|
|
if result is None:
|
|
print '=== Fails on unicode-sensitive match', t
|
|
|
|
def test_main():
|
|
suite = unittest.TestSuite()
|
|
suite.addTest(unittest.makeSuite(ReTests))
|
|
run_suite(suite)
|
|
run_re_tests()
|
|
|
|
if __name__ == "__main__":
|
|
test_main()
|