mirror of https://github.com/python/cpython
393 lines
12 KiB
Python
393 lines
12 KiB
Python
import sys
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sys.path = ['.'] + sys.path
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from test.test_support import verify, verbose, TestFailed
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import re
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import sys, os, traceback
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# Misc tests from Tim Peters' re.doc
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if verbose:
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print 'Running tests on re.search and re.match'
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try:
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verify(re.search('x*', 'axx').span(0) == (0, 0))
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verify(re.search('x*', 'axx').span() == (0, 0))
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verify(re.search('x+', 'axx').span(0) == (1, 3))
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verify(re.search('x+', 'axx').span() == (1, 3))
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verify(re.search('x', 'aaa') is None)
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except:
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raise TestFailed, "re.search"
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try:
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verify(re.match('a*', 'xxx').span(0) == (0, 0))
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verify(re.match('a*', 'xxx').span() == (0, 0))
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verify(re.match('x*', 'xxxa').span(0) == (0, 3))
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verify(re.match('x*', 'xxxa').span() == (0, 3))
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verify(re.match('a+', 'xxx') is None)
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except:
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raise TestFailed, "re.search"
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if verbose:
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print 'Running tests on re.sub'
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try:
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verify(re.sub("(?i)b+", "x", "bbbb BBBB") == 'x x')
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def bump_num(matchobj):
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int_value = int(matchobj.group(0))
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return str(int_value + 1)
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verify(re.sub(r'\d+', bump_num, '08.2 -2 23x99y') == '9.3 -3 24x100y')
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verify(re.sub(r'\d+', bump_num, '08.2 -2 23x99y', 3) == '9.3 -3 23x99y')
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verify(re.sub('.', lambda m: r"\n", 'x') == '\\n')
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verify(re.sub('.', r"\n", 'x') == '\n')
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s = r"\1\1"
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verify(re.sub('(.)', s, 'x') == 'xx')
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verify(re.sub('(.)', re.escape(s), 'x') == s)
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verify(re.sub('(.)', lambda m: s, 'x') == s)
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verify(re.sub('(?P<a>x)', '\g<a>\g<a>', 'xx') == 'xxxx')
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verify(re.sub('(?P<a>x)', '\g<a>\g<1>', 'xx') == 'xxxx')
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verify(re.sub('(?P<unk>x)', '\g<unk>\g<unk>', 'xx') == 'xxxx')
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verify(re.sub('(?P<unk>x)', '\g<1>\g<1>', 'xx') == 'xxxx')
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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')
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verify(re.sub('a', '\t\n\v\r\f\a', 'a') == '\t\n\v\r\f\a')
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verify(re.sub('a', '\t\n\v\r\f\a', 'a') == (chr(9)+chr(10)+chr(11)+chr(13)+chr(12)+chr(7)))
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verify(re.sub('^\s*', 'X', 'test') == 'Xtest')
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# Test for sub() on escaped characters, see SF bug #449000
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verify(re.sub(r'\r\n', r'\n', 'abc\r\ndef\r\n') == 'abc\ndef\n')
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verify(re.sub('\r\n', r'\n', 'abc\r\ndef\r\n') == 'abc\ndef\n')
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verify(re.sub(r'\r\n', '\n', 'abc\r\ndef\r\n') == 'abc\ndef\n')
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verify(re.sub('\r\n', '\n', 'abc\r\ndef\r\n') == 'abc\ndef\n')
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except AssertionError:
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raise TestFailed, "re.sub"
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try:
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verify(re.sub('a', 'b', 'aaaaa') == 'bbbbb')
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verify(re.sub('a', 'b', 'aaaaa', 1) == 'baaaa')
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except AssertionError:
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raise TestFailed, "qualified re.sub"
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if verbose:
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print 'Running tests on symbolic references'
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try:
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re.sub('(?P<a>x)', '\g<a', 'xx')
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except re.error, reason:
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pass
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else:
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raise TestFailed, "symbolic reference"
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try:
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re.sub('(?P<a>x)', '\g<', 'xx')
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except re.error, reason:
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pass
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else:
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raise TestFailed, "symbolic reference"
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try:
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re.sub('(?P<a>x)', '\g', 'xx')
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except re.error, reason:
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pass
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else:
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raise TestFailed, "symbolic reference"
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try:
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re.sub('(?P<a>x)', '\g<a a>', 'xx')
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except re.error, reason:
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pass
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else:
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raise TestFailed, "symbolic reference"
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try:
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re.sub('(?P<a>x)', '\g<1a1>', 'xx')
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except re.error, reason:
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pass
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else:
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raise TestFailed, "symbolic reference"
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try:
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re.sub('(?P<a>x)', '\g<ab>', 'xx')
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except IndexError, reason:
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pass
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else:
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raise TestFailed, "symbolic reference"
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try:
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re.sub('(?P<a>x)|(?P<b>y)', '\g<b>', 'xx')
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except re.error, reason:
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pass
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else:
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raise TestFailed, "symbolic reference"
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try:
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re.sub('(?P<a>x)|(?P<b>y)', '\\2', 'xx')
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except re.error, reason:
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pass
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else:
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raise TestFailed, "symbolic reference"
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if verbose:
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print 'Running tests on re.subn'
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try:
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verify(re.subn("(?i)b+", "x", "bbbb BBBB") == ('x x', 2))
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verify(re.subn("b+", "x", "bbbb BBBB") == ('x BBBB', 1))
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verify(re.subn("b+", "x", "xyz") == ('xyz', 0))
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verify(re.subn("b*", "x", "xyz") == ('xxxyxzx', 4))
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verify(re.subn("b*", "x", "xyz", 2) == ('xxxyz', 2))
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except AssertionError:
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raise TestFailed, "re.subn"
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if verbose:
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print 'Running tests on re.split'
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try:
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verify(re.split(":", ":a:b::c") == ['', 'a', 'b', '', 'c'])
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verify(re.split(":*", ":a:b::c") == ['', 'a', 'b', 'c'])
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verify(re.split("(:*)", ":a:b::c") == ['', ':', 'a', ':', 'b', '::', 'c'])
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verify(re.split("(?::*)", ":a:b::c") == ['', 'a', 'b', 'c'])
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verify(re.split("(:)*", ":a:b::c") == ['', ':', 'a', ':', 'b', ':', 'c'])
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verify(re.split("([b:]+)", ":a:b::c") == ['', ':', 'a', ':b::', 'c'])
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verify(re.split("(b)|(:+)", ":a:b::c") == \
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['', None, ':', 'a', None, ':', '', 'b', None, '', None, '::', 'c'] )
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verify(re.split("(?:b)|(?::+)", ":a:b::c") == ['', 'a', '', '', 'c'])
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except AssertionError:
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raise TestFailed, "re.split"
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try:
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verify(re.split(":", ":a:b::c", 2) == ['', 'a', 'b::c'])
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verify(re.split(':', 'a:b:c:d', 2) == ['a', 'b', 'c:d'])
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verify(re.split("(:)", ":a:b::c", 2) == ['', ':', 'a', ':', 'b::c'])
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verify(re.split("(:*)", ":a:b::c", 2) == ['', ':', 'a', ':', 'b::c'])
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except AssertionError:
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raise TestFailed, "qualified re.split"
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if verbose:
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print "Running tests on re.findall"
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try:
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verify(re.findall(":+", "abc") == [])
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verify(re.findall(":+", "a:b::c:::d") == [":", "::", ":::"])
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verify(re.findall("(:+)", "a:b::c:::d") == [":", "::", ":::"])
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verify(re.findall("(:)(:*)", "a:b::c:::d") == [(":", ""),
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(":", ":"),
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(":", "::")] )
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except AssertionError:
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raise TestFailed, "re.findall"
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if verbose:
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print "Running tests on re.match"
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try:
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# No groups at all
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m = re.match('a', 'a') ; verify(m.groups() == ())
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# A single group
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m = re.match('(a)', 'a') ; verify(m.groups() == ('a',))
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pat = re.compile('((a)|(b))(c)?')
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verify(pat.match('a').groups() == ('a', 'a', None, None))
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verify(pat.match('b').groups() == ('b', None, 'b', None))
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verify(pat.match('ac').groups() == ('a', 'a', None, 'c'))
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verify(pat.match('bc').groups() == ('b', None, 'b', 'c'))
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verify(pat.match('bc').groups("") == ('b', "", 'b', 'c'))
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except AssertionError:
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raise TestFailed, "match .groups() method"
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try:
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# A single group
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m = re.match('(a)', 'a')
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verify(m.group(0) == 'a')
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verify(m.group(0) == 'a')
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verify(m.group(1) == 'a')
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verify(m.group(1, 1) == ('a', 'a'))
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pat = re.compile('(?:(?P<a1>a)|(?P<b2>b))(?P<c3>c)?')
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verify(pat.match('a').group(1, 2, 3) == ('a', None, None))
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verify(pat.match('b').group('a1', 'b2', 'c3') == (None, 'b', None))
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verify(pat.match('ac').group(1, 'b2', 3) == ('a', None, 'c'))
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except AssertionError:
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raise TestFailed, "match .group() method"
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if verbose:
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print "Running tests on re.escape"
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try:
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p=""
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for i in range(0, 256):
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p = p + chr(i)
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verify(re.match(re.escape(chr(i)), chr(i)) is not None)
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verify(re.match(re.escape(chr(i)), chr(i)).span() == (0,1))
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pat=re.compile( re.escape(p) )
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verify(pat.match(p) is not None)
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verify(pat.match(p).span() == (0,256))
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except AssertionError:
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raise TestFailed, "re.escape"
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if verbose:
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print 'Pickling a RegexObject instance'
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import pickle
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pat = re.compile('a(?:b|(c|e){1,2}?|d)+?(.)')
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s = pickle.dumps(pat)
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pat = pickle.loads(s)
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try:
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verify(re.I == re.IGNORECASE)
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verify(re.L == re.LOCALE)
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verify(re.M == re.MULTILINE)
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verify(re.S == re.DOTALL)
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verify(re.X == re.VERBOSE)
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except AssertionError:
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raise TestFailed, 're module constants'
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for flags in [re.I, re.M, re.X, re.S, re.L]:
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try:
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r = re.compile('^pattern$', flags)
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except:
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print 'Exception raised on flag', flags
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if verbose:
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print 'Test engine limitations'
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# Try nasty case that overflows the straightforward recursive
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# implementation of repeated groups.
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try:
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verify(re.match('(x)*', 50000*'x').span() == (0, 50000))
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except RuntimeError, v:
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print v
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from re_tests import *
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if verbose:
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print 'Running re_tests test suite'
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else:
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# To save time, only run the first and last 10 tests
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#tests = tests[:10] + tests[-10:]
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pass
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for t in tests:
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sys.stdout.flush()
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pattern = s = outcome = repl = expected = None
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if len(t) == 5:
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pattern, s, outcome, repl, expected = t
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elif len(t) == 3:
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pattern, s, outcome = t
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else:
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raise ValueError, ('Test tuples should have 3 or 5 fields', t)
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try:
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obj = re.compile(pattern)
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except re.error:
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if outcome == SYNTAX_ERROR: pass # Expected a syntax error
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else:
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print '=== Syntax error:', t
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except KeyboardInterrupt: raise KeyboardInterrupt
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except:
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print '*** Unexpected error ***', t
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if verbose:
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traceback.print_exc(file=sys.stdout)
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else:
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try:
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result = obj.search(s)
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except re.error, msg:
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print '=== Unexpected exception', t, repr(msg)
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if outcome == SYNTAX_ERROR:
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# This should have been a syntax error; forget it.
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pass
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elif outcome == FAIL:
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if result is None: pass # No match, as expected
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else: print '=== Succeeded incorrectly', t
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elif outcome == SUCCEED:
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if result is not None:
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# Matched, as expected, so now we compute the
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# result string and compare it to our expected result.
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start, end = result.span(0)
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vardict={'found': result.group(0),
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'groups': result.group(),
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'flags': result.re.flags}
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for i in range(1, 100):
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try:
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gi = result.group(i)
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# Special hack because else the string concat fails:
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if gi is None:
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gi = "None"
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except IndexError:
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gi = "Error"
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vardict['g%d' % i] = gi
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for i in result.re.groupindex.keys():
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try:
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gi = result.group(i)
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if gi is None:
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gi = "None"
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except IndexError:
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gi = "Error"
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vardict[i] = gi
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repl = eval(repl, vardict)
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if repl != expected:
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print '=== grouping error', t,
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print repr(repl) + ' should be ' + repr(expected)
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else:
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print '=== Failed incorrectly', t
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# Try the match on a unicode string, and check that it
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# still succeeds.
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try:
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result = obj.search(unicode(s, "latin-1"))
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if result is None:
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print '=== Fails on unicode match', t
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except NameError:
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continue # 1.5.2
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except TypeError:
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continue # unicode test case
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# Try the match on a unicode pattern, and check that it
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# still succeeds.
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obj=re.compile(unicode(pattern, "latin-1"))
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result = obj.search(s)
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if result is None:
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print '=== Fails on unicode pattern match', t
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# Try the match with the search area limited to the extent
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# of the match and see if it still succeeds. \B will
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# break (because it won't match at the end or start of a
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# string), so we'll ignore patterns that feature it.
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if pattern[:2] != '\\B' and pattern[-2:] != '\\B' \
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and result is not None:
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obj = re.compile(pattern)
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result = obj.search(s, result.start(0), result.end(0) + 1)
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if result is None:
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print '=== Failed on range-limited match', t
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# Try the match with IGNORECASE enabled, and check that it
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# still succeeds.
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obj = re.compile(pattern, re.IGNORECASE)
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result = obj.search(s)
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if result is None:
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print '=== Fails on case-insensitive match', t
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# Try the match with LOCALE enabled, and check that it
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# still succeeds.
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obj = re.compile(pattern, re.LOCALE)
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result = obj.search(s)
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if result is None:
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print '=== Fails on locale-sensitive match', t
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# Try the match with UNICODE locale enabled, and check
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# that it still succeeds.
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obj = re.compile(pattern, re.UNICODE)
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result = obj.search(s)
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if result is None:
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print '=== Fails on unicode-sensitive match', t
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