import sys
sys.path = ['.'] + sys.path
from test_support import verify,verbose,TestFailed
import re
import sys, os, traceback
# Misc tests from Tim Peters' re.doc
if verbose:
print 'Running tests on re.search and re.match'
try:
verify(re.search('x*', 'axx').span(0) == (0, 0))
verify(re.search('x*', 'axx').span() == (0, 0))
verify(re.search('x+', 'axx').span(0) == (1, 3))
verify(re.search('x+', 'axx').span() == (1, 3))
verify(re.search('x', 'aaa') is None)
except:
raise TestFailed, "re.search"
try:
verify(re.match('a*', 'xxx').span(0) == (0, 0))
verify(re.match('a*', 'xxx').span() == (0, 0))
verify(re.match('x*', 'xxxa').span(0) == (0, 3))
verify(re.match('x*', 'xxxa').span() == (0, 3))
verify(re.match('a+', 'xxx') is None)
except:
raise TestFailed, "re.search"
if verbose:
print 'Running tests on re.sub'
try:
verify(re.sub("(?i)b+", "x", "bbbb BBBB") == 'x x')
def bump_num(matchobj):
int_value = int(matchobj.group(0))
return str(int_value + 1)
verify(re.sub(r'\d+', bump_num, '08.2 -2 23x99y') == '9.3 -3 24x100y')
verify(re.sub(r'\d+', bump_num, '08.2 -2 23x99y', 3) == '9.3 -3 23x99y')
verify(re.sub('.', lambda m: r"\n", 'x') == '\\n')
verify(re.sub('.', r"\n", 'x') == '\n')
s = r"\1\1"
verify(re.sub('(.)', s, 'x') == 'xx')
verify(re.sub('(.)', re.escape(s), 'x') == s)
verify(re.sub('(.)', lambda m: s, 'x') == s)
verify(re.sub('(?P<a>x)', '\g<a>\g<a>', 'xx') == 'xxxx')
verify(re.sub('(?P<a>x)', '\g<a>\g<1>', 'xx') == 'xxxx')
verify(re.sub('(?P<unk>x)', '\g<unk>\g<unk>', 'xx') == 'xxxx')
verify(re.sub('(?P<unk>x)', '\g<1>\g<1>', 'xx') == 'xxxx')
verify(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')
verify(re.sub('a', '\t\n\v\r\f\a', 'a') == '\t\n\v\r\f\a')
verify(re.sub('a', '\t\n\v\r\f\a', 'a') == (chr(9)+chr(10)+chr(11)+chr(13)+chr(12)+chr(7)))
verify(re.sub('^\s*', 'X', 'test') == 'Xtest')
except AssertionError:
raise TestFailed, "re.sub"
try:
verify(re.sub('a', 'b', 'aaaaa') == 'bbbbb')
verify(re.sub('a', 'b', 'aaaaa', 1) == 'baaaa')
except AssertionError:
raise TestFailed, "qualified re.sub"
if verbose:
print 'Running tests on symbolic references'
try:
re.sub('(?P<a>x)', '\g<a', 'xx')
except re.error, reason:
pass
else:
raise TestFailed, "symbolic reference"
try:
re.sub('(?P<a>x)', '\g<', 'xx')
except re.error, reason:
pass
else:
raise TestFailed, "symbolic reference"
try:
re.sub('(?P<a>x)', '\g', 'xx')
except re.error, reason:
pass
else:
raise TestFailed, "symbolic reference"
try:
re.sub('(?P<a>x)', '\g<a a>', 'xx')
except re.error, reason:
pass
else:
raise TestFailed, "symbolic reference"
try:
re.sub('(?P<a>x)', '\g<1a1>', 'xx')
except re.error, reason:
pass
else:
raise TestFailed, "symbolic reference"
try:
re.sub('(?P<a>x)', '\g<ab>', 'xx')
except IndexError, reason:
pass
else:
raise TestFailed, "symbolic reference"
try:
re.sub('(?P<a>x)|(?P<b>y)', '\g<b>', 'xx')
except re.error, reason:
pass
else:
raise TestFailed, "symbolic reference"
try:
re.sub('(?P<a>x)|(?P<b>y)', '\\2', 'xx')
except re.error, reason:
pass
else:
raise TestFailed, "symbolic reference"
if verbose:
print 'Running tests on re.subn'
try:
verify(re.subn("(?i)b+", "x", "bbbb BBBB") == ('x x', 2))
verify(re.subn("b+", "x", "bbbb BBBB") == ('x BBBB', 1))
verify(re.subn("b+", "x", "xyz") == ('xyz', 0))
verify(re.subn("b*", "x", "xyz") == ('xxxyxzx', 4))
verify(re.subn("b*", "x", "xyz", 2) == ('xxxyz', 2))
except AssertionError:
raise TestFailed, "re.subn"
if verbose:
print 'Running tests on re.split'
try:
verify(re.split(":", ":a:b::c") == ['', 'a', 'b', '', 'c'])
verify(re.split(":*", ":a:b::c") == ['', 'a', 'b', 'c'])
verify(re.split("(:*)", ":a:b::c") == ['', ':', 'a', ':', 'b', '::', 'c'])
verify(re.split("(?::*)", ":a:b::c") == ['', 'a', 'b', 'c'])
verify(re.split("(:)*", ":a:b::c") == ['', ':', 'a', ':', 'b', ':', 'c'])
verify(re.split("([b:]+)", ":a:b::c") == ['', ':', 'a', ':b::', 'c'])
verify(re.split("(b)|(:+)", ":a:b::c") == \
['', None, ':', 'a', None, ':', '', 'b', None, '', None, '::', 'c'] )
verify(re.split("(?:b)|(?::+)", ":a:b::c") == ['', 'a', '', '', 'c'])
except AssertionError:
raise TestFailed, "re.split"
try:
verify(re.split(":", ":a:b::c", 2) == ['', 'a', 'b::c'])
verify(re.split(':', 'a:b:c:d', 2) == ['a', 'b', 'c:d'])
verify(re.split("(:)", ":a:b::c", 2) == ['', ':', 'a', ':', 'b::c'])
verify(re.split("(:*)", ":a:b::c", 2) == ['', ':', 'a', ':', 'b::c'])
except AssertionError:
raise TestFailed, "qualified re.split"
if verbose:
print "Running tests on re.findall"
try:
verify(re.findall(":+", "abc") == [])
verify(re.findall(":+", "a:b::c:::d") == [":", "::", ":::"])
verify(re.findall("(:+)", "a:b::c:::d") == [":", "::", ":::"])
verify(re.findall("(:)(:*)", "a:b::c:::d") == [(":", ""),
(":", ":"),
(":", "::")] )
except AssertionError:
raise TestFailed, "re.findall"
if verbose:
print "Running tests on re.match"
try:
# No groups at all
m = re.match('a', 'a') ; verify(m.groups() == ())
# A single group
m = re.match('(a)', 'a') ; verify(m.groups() == ('a',))
pat = re.compile('((a)|(b))(c)?')
verify(pat.match('a').groups() == ('a', 'a', None, None))
verify(pat.match('b').groups() == ('b', None, 'b', None))
verify(pat.match('ac').groups() == ('a', 'a', None, 'c'))
verify(pat.match('bc').groups() == ('b', None, 'b', 'c'))
verify(pat.match('bc').groups("") == ('b', "", 'b', 'c'))
except AssertionError:
raise TestFailed, "match .groups() method"
try:
# A single group
m = re.match('(a)', 'a')
verify(m.group(0) == 'a')
verify(m.group(0) == 'a')
verify(m.group(1) == 'a')
verify(m.group(1, 1) == ('a', 'a'))
pat = re.compile('(?:(?P<a1>a)|(?P<b2>b))(?P<c3>c)?')
verify(pat.match('a').group(1, 2, 3) == ('a', None, None))
verify(pat.match('b').group('a1', 'b2', 'c3') == (None, 'b', None))
verify(pat.match('ac').group(1, 'b2', 3) == ('a', None, 'c'))
except AssertionError:
raise TestFailed, "match .group() method"
if verbose:
print "Running tests on re.escape"
try:
p=""
for i in range(0, 256):
p = p + chr(i)
verify(re.match(re.escape(chr(i)), chr(i)) is not None)
verify(re.match(re.escape(chr(i)), chr(i)).span() == (0,1))
pat=re.compile( re.escape(p) )
verify(pat.match(p) is not None)
verify(pat.match(p).span() == (0,256))
except AssertionError:
raise TestFailed, "re.escape"
if verbose:
print 'Pickling a RegexObject instance'
import pickle
pat = re.compile('a(?:b|(c|e){1,2}?|d)+?(.)')
s = pickle.dumps(pat)
pat = pickle.loads(s)
try:
verify(re.I == re.IGNORECASE)
verify(re.L == re.LOCALE)
verify(re.M == re.MULTILINE)
verify(re.S == re.DOTALL)
verify(re.X == re.VERBOSE)
except AssertionError:
raise TestFailed, 're module constants'
for flags in [re.I, re.M, re.X, re.S, re.L]:
try:
r = re.compile('^pattern$', flags)
except:
print 'Exception raised on flag', flags
if verbose:
print 'Test engine limitations'
# Try nasty case that overflows the straightforward recursive
# implementation of repeated groups.
try:
verify(re.match('(x)*', 50000*'x').span() == (0, 50000))
except RuntimeError, v:
print v
from re_tests import *
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
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