Lib/test/test_regex.py

   1 from test_support import verbose
   2 import warnings
   3 warnings.filterwarnings("ignore", "the regex module is deprecated",
   4                         DeprecationWarning, __name__)
   5 import regex
   6 from regex_syntax import *
   7
   8 re = 'a+b+c+'
   9 print 'no match:', regex.match(re, 'hello aaaabcccc world')
  10 print 'successful search:', regex.search(re, 'hello aaaabcccc world')
  11 try:
  12     cre = regex.compile('\(' + re)
  13 except regex.error:
  14     print 'caught expected exception'
  15 else:
  16     print 'expected regex.error not raised'
  17
  18 print 'failed awk syntax:', regex.search('(a+)|(b+)', 'cdb')
  19 prev = regex.set_syntax(RE_SYNTAX_AWK)
  20 print 'successful awk syntax:', regex.search('(a+)|(b+)', 'cdb')
  21 regex.set_syntax(prev)
  22 print 'failed awk syntax:', regex.search('(a+)|(b+)', 'cdb')
  23
  24 re = '\(<one>[0-9]+\) *\(<two>[0-9]+\)'
  25 print 'matching with group names and compile()'
  26 cre = regex.compile(re)
  27 print cre.match('801 999')
  28 try:
  29     print cre.group('one')
  30 except regex.error:
  31     print 'caught expected exception'
  32 else:
  33     print 'expected regex.error not raised'
  34
  35 print 'matching with group names and symcomp()'
  36 cre = regex.symcomp(re)
  37 print cre.match('801 999')
  38 print cre.group(0)
  39 print cre.group('one')
  40 print cre.group(1, 2)
  41 print cre.group('one', 'two')
  42 print 'realpat:', cre.realpat
  43 print 'groupindex:', cre.groupindex
  44
  45 re = 'world'
  46 cre = regex.compile(re)
  47 print 'not case folded search:', cre.search('HELLO WORLD')
  48 cre = regex.compile(re, regex.casefold)
  49 print 'case folded search:', cre.search('HELLO WORLD')
  50
  51 print '__members__:', cre.__members__
  52 print 'regs:', cre.regs
  53 print 'last:', cre.last
  54 print 'translate:', len(cre.translate)
  55 print 'givenpat:', cre.givenpat
  56
  57 print 'match with pos:', cre.match('hello world', 7)
  58 print 'search with pos:', cre.search('hello world there world', 7)
  59 print 'bogus group:', cre.group(0, 1, 3)
  60 try:
  61     print 'no name:', cre.group('one')
  62 except regex.error:
  63     print 'caught expected exception'
  64 else:
  65     print 'expected regex.error not raised'
  66
  67 from regex_tests import *
  68 if verbose: print 'Running regex_tests test suite'
  69
  70 for t in tests:
  71     pattern=s=outcome=repl=expected=None
  72     if len(t)==5:
  73         pattern, s, outcome, repl, expected = t
  74     elif len(t)==3:
  75         pattern, s, outcome = t
  76     else:
  77         raise ValueError, ('Test tuples should have 3 or 5 fields',t)
  78
  79     try:
  80         obj=regex.compile(pattern)
  81     except regex.error:
  82         if outcome==SYNTAX_ERROR: pass    # Expected a syntax error
  83         else:
  84             # Regex syntax errors aren't yet reported, so for
  85             # the official test suite they'll be quietly ignored.
  86             pass
  87             #print '=== Syntax error:', t
  88     else:
  89         try:
  90             result=obj.search(s)
  91         except regex.error, msg:
  92             print '=== Unexpected exception', t, repr(msg)
  93         if outcome==SYNTAX_ERROR:
  94             # This should have been a syntax error; forget it.
  95             pass
  96         elif outcome==FAIL:
  97             if result==-1: pass   # No match, as expected
  98             else: print '=== Succeeded incorrectly', t
  99         elif outcome==SUCCEED:
 100             if result!=-1:
 101                 # Matched, as expected, so now we compute the
 102                 # result string and compare it to our expected result.
 103                 start, end = obj.regs[0]
 104                 found=s[start:end]
 105                 groups=obj.group(1,2,3,4,5,6,7,8,9,10)
 106                 vardict=vars()
 107                 for i in range(len(groups)):
 108                     vardict['g'+str(i+1)]=str(groups[i])
 109                 repl=eval(repl)
 110                 if repl!=expected:
 111                     print '=== grouping error', t, repr(repl)+' should be '+repr(expected)
 112             else:
 113                 print '=== Failed incorrectly', t