[Python-checkins] CVS: python/dist/src/Lib/test test_sre.py,NONE,1.1
Fredrik Lundh
python-dev@python.org
Fri, 30 Jun 2000 00:08:22 -0700
Update of /cvsroot/python/python/dist/src/Lib/test
In directory slayer.i.sourceforge.net:/tmp/cvs-serv22149/Lib/test
Added Files:
test_sre.py
Log Message:
- fixed default value handling in group/groupdict
- added test suite
--- NEW FILE ---
# FIXME: this is basically test_re.py, with a few
import sys
sys.path=['.']+sys.path
from test_support import verbose, TestFailed
import sre
import sys, os, string, traceback
# Misc tests from Tim Peters' re.doc
if verbose:
print 'Running tests on sre.search and sre.match'
try:
assert sre.search('x*', 'axx').span(0) == (0, 0)
assert sre.search('x*', 'axx').span() == (0, 0)
assert sre.search('x+', 'axx').span(0) == (1, 3)
assert sre.search('x+', 'axx').span() == (1, 3)
assert sre.search('x', 'aaa') == None
except:
raise TestFailed, "sre.search"
try:
assert sre.match('a*', 'xxx').span(0) == (0, 0)
assert sre.match('a*', 'xxx').span() == (0, 0)
assert sre.match('x*', 'xxxa').span(0) == (0, 3)
assert sre.match('x*', 'xxxa').span() == (0, 3)
assert sre.match('a+', 'xxx') == None
except:
raise TestFailed, "sre.search"
if verbose:
print 'Running tests on sre.sub'
try:
assert sre.sub("(?i)b+", "x", "bbbb BBBB") == 'x x'
def bump_num(matchobj):
int_value = int(matchobj.group(0))
return str(int_value + 1)
assert sre.sub(r'\d+', bump_num, '08.2 -2 23x99y') == '9.3 -3 24x100y'
assert sre.sub(r'\d+', bump_num, '08.2 -2 23x99y', 3) == '9.3 -3 23x99y'
assert sre.sub('.', lambda m: r"\n", 'x') == '\\n'
assert sre.sub('.', r"\n", 'x') == '\n'
s = r"\1\1"
assert sre.sub('(.)', s, 'x') == 'xx'
assert sre.sub('(.)', sre.escape(s), 'x') == s
assert sre.sub('(.)', lambda m: s, 'x') == s
assert sre.sub('(?P<a>x)', '\g<a>\g<a>', 'xx') == 'xxxx'
assert sre.sub('(?P<a>x)', '\g<a>\g<1>', 'xx') == 'xxxx'
assert sre.sub('(?P<unk>x)', '\g<unk>\g<unk>', 'xx') == 'xxxx'
assert sre.sub('(?P<unk>x)', '\g<1>\g<1>', 'xx') == 'xxxx'
assert sre.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'
assert sre.sub('a', '\t\n\v\r\f\a', 'a') == '\t\n\v\r\f\a'
assert sre.sub('a', '\t\n\v\r\f\a', 'a') == (chr(9)+chr(10)+chr(11)+chr(13)+chr(12)+chr(7))
assert sre.sub('^\s*', 'X', 'test') == 'Xtest'
except AssertionError:
raise TestFailed, "sre.sub"
try:
assert sre.sub('a', 'b', 'aaaaa') == 'bbbbb'
assert sre.sub('a', 'b', 'aaaaa', 1) == 'baaaa'
except AssertionError:
raise TestFailed, "qualified sre.sub"
if verbose:
print 'Running tests on symbolic references'
try:
sre.sub('(?P<a>x)', '\g<a', 'xx')
except sre.error, reason:
pass
else:
raise TestFailed, "symbolic reference"
try:
sre.sub('(?P<a>x)', '\g<', 'xx')
except sre.error, reason:
pass
else:
raise TestFailed, "symbolic reference"
try:
sre.sub('(?P<a>x)', '\g', 'xx')
except sre.error, reason:
pass
else:
raise TestFailed, "symbolic reference"
try:
sre.sub('(?P<a>x)', '\g<a a>', 'xx')
except sre.error, reason:
pass
else:
raise TestFailed, "symbolic reference"
try:
sre.sub('(?P<a>x)', '\g<1a1>', 'xx')
except sre.error, reason:
pass
else:
raise TestFailed, "symbolic reference"
try:
sre.sub('(?P<a>x)', '\g<ab>', 'xx')
except IndexError, reason:
pass
else:
raise TestFailed, "symbolic reference"
try:
sre.sub('(?P<a>x)|(?P<b>y)', '\g<b>', 'xx')
except sre.error, reason:
pass
else:
raise TestFailed, "symbolic reference"
try:
sre.sub('(?P<a>x)|(?P<b>y)', '\\2', 'xx')
except sre.error, reason:
pass
else:
raise TestFailed, "symbolic reference"
if verbose:
print 'Running tests on sre.subn'
try:
assert sre.subn("(?i)b+", "x", "bbbb BBBB") == ('x x', 2)
assert sre.subn("b+", "x", "bbbb BBBB") == ('x BBBB', 1)
assert sre.subn("b+", "x", "xyz") == ('xyz', 0)
assert sre.subn("b*", "x", "xyz") == ('xxxyxzx', 4)
assert sre.subn("b*", "x", "xyz", 2) == ('xxxyz', 2)
except AssertionError:
raise TestFailed, "sre.subn"
if verbose:
print 'Running tests on sre.split'
try:
assert sre.split(":", ":a:b::c") == ['', 'a', 'b', '', 'c']
assert sre.split(":*", ":a:b::c") == ['', 'a', 'b', 'c']
assert sre.split("(:*)", ":a:b::c") == ['', ':', 'a', ':', 'b', '::', 'c']
assert sre.split("(?::*)", ":a:b::c") == ['', 'a', 'b', 'c']
assert sre.split("(:)*", ":a:b::c") == ['', ':', 'a', ':', 'b', ':', 'c']
assert sre.split("([b:]+)", ":a:b::c") == ['', ':', 'a', ':b::', 'c']
# FIXME: group problem
# assert sre.split("(b)|(:+)", ":a:b::c") == \
# ['', None, ':', 'a', None, ':', '', 'b', None, '', None, '::', 'c']
assert sre.split("(?:b)|(?::+)", ":a:b::c") == ['', 'a', '', '', 'c']
except AssertionError:
raise TestFailed, "sre.split"
try:
assert sre.split(":", ":a:b::c", 2) == ['', 'a', 'b::c']
assert sre.split(':', 'a:b:c:d', 2) == ['a', 'b', 'c:d']
assert sre.split("(:)", ":a:b::c", 2) == ['', ':', 'a', ':', 'b::c']
assert sre.split("(:*)", ":a:b::c", 2) == ['', ':', 'a', ':', 'b::c']
except AssertionError:
raise TestFailed, "qualified sre.split"
if verbose:
print "Running tests on sre.findall"
try:
assert sre.findall(":+", "abc") == []
assert sre.findall(":+", "a:b::c:::d") == [":", "::", ":::"]
assert sre.findall("(:+)", "a:b::c:::d") == [":", "::", ":::"]
assert sre.findall("(:)(:*)", "a:b::c:::d") == [(":", ""),
(":", ":"),
(":", "::")]
except AssertionError:
raise TestFailed, "sre.findall"
if verbose:
print "Running tests on sre.match"
try:
# No groups at all
m = sre.match('a', 'a') ; assert m.groups() == ()
# A single group
m = sre.match('(a)', 'a') ; assert m.groups() == ('a',)
pat = sre.compile('((a)|(b))(c)?')
assert pat.match('a').groups() == ('a', 'a', None, None)
assert pat.match('b').groups() == ('b', None, 'b', None)
assert pat.match('ac').groups() == ('a', 'a', None, 'c')
assert pat.match('bc').groups() == ('b', None, 'b', 'c')
assert pat.match('bc').groups("") == ('b', "", 'b', 'c')
except AssertionError:
raise TestFailed, "match .groups() method"
try:
# A single group
m = sre.match('(a)', 'a')
assert m.group(0) == 'a' ; assert m.group(0) == 'a'
assert m.group(1) == 'a' ; assert m.group(1, 1) == ('a', 'a')
pat = sre.compile('(?:(?P<a1>a)|(?P<b2>b))(?P<c3>c)?')
assert pat.match('a').group(1, 2, 3) == ('a', None, None)
assert pat.match('b').group('a1', 'b2', 'c3') == (None, 'b', None)
assert pat.match('ac').group(1, 'b2', 3) == ('a', None, 'c')
except AssertionError:
raise TestFailed, "match .group() method"
if verbose:
print "Running tests on sre.escape"
try:
p=""
for i in range(0, 256):
p = p + chr(i)
assert sre.match(sre.escape(chr(i)), chr(i)) != None
assert sre.match(sre.escape(chr(i)), chr(i)).span() == (0,1)
pat=sre.compile( sre.escape(p) )
assert pat.match(p) != None
assert pat.match(p).span() == (0,256)
except AssertionError:
raise TestFailed, "sre.escape"
if verbose:
print 'Pickling a SRE_Pattern instance'
try:
import pickle
pat = sre.compile('a(?:b|(c|e){1,2}?|d)+?(.)')
s = pickle.dumps(pat)
pat = pickle.loads(s)
except:
print TestFailed, 're module pickle' # expected
try:
import cPickle
pat = sre.compile('a(?:b|(c|e){1,2}?|d)+?(.)')
s = cPickle.dumps(pat)
pat = cPickle.loads(s)
except:
print TestFailed, 're module cPickle' # expected
try:
assert sre.I == sre.IGNORECASE
assert sre.L == sre.LOCALE
assert sre.M == sre.MULTILINE
assert sre.S == sre.DOTALL
assert sre.X == sre.VERBOSE
assert sre.T == sre.TEMPLATE
assert sre.U == sre.UNICODE
except AssertionError:
raise TestFailed, 're module constants'
for flags in [sre.I, sre.M, sre.X, sre.S, sre.L, sre.T, sre.U]:
try:
r = sre.compile('^pattern$', flags)
except:
print 'Exception raised on flag', flags
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=sre.compile(pattern)
except sre.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 (sre.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
continue
# Try the match on a unicode string, and check that it
# still succeeds.
result=obj.search(unicode(s, "latin-1"))
if result==None:
print '=== Fails on unicode match', t
# Try the match on a unicode pattern, and check that it
# still succeeds.
obj=sre.compile(unicode(pattern, "latin-1"))
result=obj.search(s)
if result==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':
obj=sre.compile(pattern)
result=obj.search(s, result.start(0), result.end(0)+1)
if result==None:
print '=== Failed on range-limited match', t
# Try the match with IGNORECASE enabled, and check that it
# still succeeds.
obj=sre.compile(pattern, sre.IGNORECASE)
result=obj.search(s)
if result==None:
print '=== Fails on case-insensitive match', t
# Try the match with LOCALE enabled, and check that it
# still succeeds.
obj=sre.compile(pattern, sre.LOCALE)
result=obj.search(s)
if result==None:
print '=== Fails on locale-sensitive match', t
# Try the match with UNICODE enabled, and check that it
# still succeeds.
obj=sre.compile(pattern, sre.UNICODE)
result=obj.search(s)
if result==None:
print '=== Fails on unicode-sensitive match', t