cpython/Lib/test/test_regex.py

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from test_support import verbose
import warnings
warnings.filterwarnings("ignore", "the regex module is deprecated",
DeprecationWarning, "test_regex")
import regex
from regex_syntax import *
re = 'a+b+c+'
print 'no match:', regex.match(re, 'hello aaaabcccc world')
print 'successful search:', regex.search(re, 'hello aaaabcccc world')
try:
cre = regex.compile('\(' + re)
except regex.error:
print 'caught expected exception'
else:
print 'expected regex.error not raised'
print 'failed awk syntax:', regex.search('(a+)|(b+)', 'cdb')
prev = regex.set_syntax(RE_SYNTAX_AWK)
print 'successful awk syntax:', regex.search('(a+)|(b+)', 'cdb')
regex.set_syntax(prev)
print 'failed awk syntax:', regex.search('(a+)|(b+)', 'cdb')
re = '\(<one>[0-9]+\) *\(<two>[0-9]+\)'
print 'matching with group names and compile()'
cre = regex.compile(re)
print cre.match('801 999')
try:
print cre.group('one')
except regex.error:
print 'caught expected exception'
else:
print 'expected regex.error not raised'
print 'matching with group names and symcomp()'
cre = regex.symcomp(re)
print cre.match('801 999')
print cre.group(0)
print cre.group('one')
print cre.group(1, 2)
print cre.group('one', 'two')
print 'realpat:', cre.realpat
print 'groupindex:', cre.groupindex
re = 'world'
cre = regex.compile(re)
print 'not case folded search:', cre.search('HELLO WORLD')
cre = regex.compile(re, regex.casefold)
print 'case folded search:', cre.search('HELLO WORLD')
print '__members__:', cre.__members__
print 'regs:', cre.regs
print 'last:', cre.last
print 'translate:', len(cre.translate)
print 'givenpat:', cre.givenpat
print 'match with pos:', cre.match('hello world', 7)
print 'search with pos:', cre.search('hello world there world', 7)
print 'bogus group:', cre.group(0, 1, 3)
try:
print 'no name:', cre.group('one')
except regex.error:
print 'caught expected exception'
else:
print 'expected regex.error not raised'
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from regex_tests import *
if verbose: print 'Running regex_tests test suite'
for t in tests:
pattern=s=outcome=repl=expected=None
if len(t)==5:
pattern, s, outcome, repl, expected = t
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elif len(t)==3:
pattern, s, outcome = t
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else:
raise ValueError, ('Test tuples should have 3 or 5 fields',t)
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try:
obj=regex.compile(pattern)
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except regex.error:
if outcome==SYNTAX_ERROR: pass # Expected a syntax error
else:
# Regex syntax errors aren't yet reported, so for
# the official test suite they'll be quietly ignored.
pass
#print '=== Syntax error:', t
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else:
try:
result=obj.search(s)
except regex.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==-1: pass # No match, as expected
else: print '=== Succeeded incorrectly', t
elif outcome==SUCCEED:
if result!=-1:
# Matched, as expected, so now we compute the
# result string and compare it to our expected result.
start, end = obj.regs[0]
found=s[start:end]
groups=obj.group(1,2,3,4,5,6,7,8,9,10)
vardict=vars()
for i in range(len(groups)):
vardict['g'+str(i+1)]=str(groups[i])
repl=eval(repl)
if repl!=expected:
print '=== grouping error', t, repr(repl)+' should be '+repr(expected)
else:
print '=== Failed incorrectly', t