mirror of https://github.com/python/cpython.git
380 lines
13 KiB
Python
380 lines
13 KiB
Python
# SRE test harness for the Python regression suite
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# this is based on test_re.py, but uses a test function instead
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# of all those asserts
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import sys
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sys.path=['.']+sys.path
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from test_support import verbose, TestFailed
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import sre
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import sys, os, string, traceback
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#
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# test support
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def test(expression, result, exception=None):
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try:
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r = eval(expression)
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except:
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if exception:
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if not isinstance(sys.exc_value, exception):
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print expression, "FAILED"
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# display name, not actual value
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if exception is sre.error:
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print "expected", "sre.error"
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else:
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print "expected", exception.__name__
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print "got", sys.exc_type.__name__, str(sys.exc_value)
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else:
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print expression, "FAILED"
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traceback.print_exc(file=sys.stdout)
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else:
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if exception:
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print expression, "FAILED"
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if exception is sre.error:
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print "expected", "sre.error"
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else:
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print "expected", exception.__name__
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print "got result", repr(r)
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else:
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if r != result:
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print expression, "FAILED"
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print "expected", repr(result)
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print "got result", repr(r)
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if verbose:
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print 'Running tests on character literals'
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for i in [0, 8, 16, 32, 64, 127, 128, 255]:
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test(r"""sre.match(r"\%03o" % i, chr(i)) is not None""", 1)
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test(r"""sre.match(r"\%03o0" % i, chr(i)+"0") is not None""", 1)
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test(r"""sre.match(r"\%03o8" % i, chr(i)+"8") is not None""", 1)
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test(r"""sre.match(r"\x%02x" % i, chr(i)) is not None""", 1)
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test(r"""sre.match(r"\x%02x0" % i, chr(i)+"0") is not None""", 1)
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test(r"""sre.match(r"\x%02xz" % i, chr(i)+"z") is not None""", 1)
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test(r"""sre.match("\911", "")""", None, sre.error)
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#
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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 sre.search and sre.match'
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test(r"""sre.search(r'x*', 'axx').span(0)""", (0, 0))
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test(r"""sre.search(r'x*', 'axx').span()""", (0, 0))
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test(r"""sre.search(r'x+', 'axx').span(0)""", (1, 3))
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test(r"""sre.search(r'x+', 'axx').span()""", (1, 3))
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test(r"""sre.search(r'x', 'aaa')""", None)
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test(r"""sre.match(r'a*', 'xxx').span(0)""", (0, 0))
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test(r"""sre.match(r'a*', 'xxx').span()""", (0, 0))
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test(r"""sre.match(r'x*', 'xxxa').span(0)""", (0, 3))
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test(r"""sre.match(r'x*', 'xxxa').span()""", (0, 3))
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test(r"""sre.match(r'a+', 'xxx')""", None)
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# bug 113254
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test(r"""sre.match(r'(a)|(b)', 'b').start(1)""", -1)
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test(r"""sre.match(r'(a)|(b)', 'b').end(1)""", -1)
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test(r"""sre.match(r'(a)|(b)', 'b').span(1)""", (-1, -1))
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if verbose:
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print 'Running tests on sre.sub'
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test(r"""sre.sub(r"(?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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test(r"""sre.sub(r'\d+', bump_num, '08.2 -2 23x99y')""", '9.3 -3 24x100y')
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test(r"""sre.sub(r'\d+', bump_num, '08.2 -2 23x99y', 3)""", '9.3 -3 23x99y')
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test(r"""sre.sub(r'.', lambda m: r"\n", 'x')""", '\\n')
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test(r"""sre.sub(r'.', r"\n", 'x')""", '\n')
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s = r"\1\1"
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test(r"""sre.sub(r'(.)', s, 'x')""", 'xx')
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test(r"""sre.sub(r'(.)', sre.escape(s), 'x')""", s)
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test(r"""sre.sub(r'(.)', lambda m: s, 'x')""", s)
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test(r"""sre.sub(r'(?P<a>x)', '\g<a>\g<a>', 'xx')""", 'xxxx')
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test(r"""sre.sub(r'(?P<a>x)', '\g<a>\g<1>', 'xx')""", 'xxxx')
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test(r"""sre.sub(r'(?P<unk>x)', '\g<unk>\g<unk>', 'xx')""", 'xxxx')
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test(r"""sre.sub(r'(?P<unk>x)', '\g<1>\g<1>', 'xx')""", 'xxxx')
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test(r"""sre.sub(r'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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test(r"""sre.sub(r'a', '\t\n\v\r\f\a', 'a')""", '\t\n\v\r\f\a')
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test(r"""sre.sub(r'a', '\t\n\v\r\f\a', 'a')""", (chr(9)+chr(10)+chr(11)+chr(13)+chr(12)+chr(7)))
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test(r"""sre.sub(r'^\s*', 'X', 'test')""", 'Xtest')
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# qualified sub
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test(r"""sre.sub(r'a', 'b', 'aaaaa')""", 'bbbbb')
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test(r"""sre.sub(r'a', 'b', 'aaaaa', 1)""", 'baaaa')
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# bug 114660
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test(r"""sre.sub(r'(\S)\s+(\S)', r'\1 \2', 'hello there')""", 'hello there')
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if verbose:
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print 'Running tests on symbolic references'
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test(r"""sre.sub(r'(?P<a>x)', '\g<a', 'xx')""", None, sre.error)
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test(r"""sre.sub(r'(?P<a>x)', '\g<', 'xx')""", None, sre.error)
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test(r"""sre.sub(r'(?P<a>x)', '\g', 'xx')""", None, sre.error)
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test(r"""sre.sub(r'(?P<a>x)', '\g<a a>', 'xx')""", None, sre.error)
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test(r"""sre.sub(r'(?P<a>x)', '\g<1a1>', 'xx')""", None, sre.error)
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test(r"""sre.sub(r'(?P<a>x)', '\g<ab>', 'xx')""", None, IndexError)
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test(r"""sre.sub(r'(?P<a>x)|(?P<b>y)', '\g<b>', 'xx')""", None, sre.error)
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test(r"""sre.sub(r'(?P<a>x)|(?P<b>y)', '\\2', 'xx')""", None, sre.error)
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if verbose:
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print 'Running tests on sre.subn'
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test(r"""sre.subn(r"(?i)b+", "x", "bbbb BBBB")""", ('x x', 2))
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test(r"""sre.subn(r"b+", "x", "bbbb BBBB")""", ('x BBBB', 1))
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test(r"""sre.subn(r"b+", "x", "xyz")""", ('xyz', 0))
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test(r"""sre.subn(r"b*", "x", "xyz")""", ('xxxyxzx', 4))
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test(r"""sre.subn(r"b*", "x", "xyz", 2)""", ('xxxyz', 2))
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if verbose:
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print 'Running tests on sre.split'
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test(r"""sre.split(r":", ":a:b::c")""", ['', 'a', 'b', '', 'c'])
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test(r"""sre.split(r":*", ":a:b::c")""", ['', 'a', 'b', 'c'])
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test(r"""sre.split(r"(:*)", ":a:b::c")""", ['', ':', 'a', ':', 'b', '::', 'c'])
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test(r"""sre.split(r"(?::*)", ":a:b::c")""", ['', 'a', 'b', 'c'])
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test(r"""sre.split(r"(:)*", ":a:b::c")""", ['', ':', 'a', ':', 'b', ':', 'c'])
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test(r"""sre.split(r"([b:]+)", ":a:b::c")""", ['', ':', 'a', ':b::', 'c'])
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test(r"""sre.split(r"(b)|(:+)", ":a:b::c")""",
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['', None, ':', 'a', None, ':', '', 'b', None, '', None, '::', 'c'])
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test(r"""sre.split(r"(?:b)|(?::+)", ":a:b::c")""", ['', 'a', '', '', 'c'])
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test(r"""sre.split(r":", ":a:b::c", 2)""", ['', 'a', 'b::c'])
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test(r"""sre.split(r':', 'a:b:c:d', 2)""", ['a', 'b', 'c:d'])
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test(r"""sre.split(r"(:)", ":a:b::c", 2)""", ['', ':', 'a', ':', 'b::c'])
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test(r"""sre.split(r"(:*)", ":a:b::c", 2)""", ['', ':', 'a', ':', 'b::c'])
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if verbose:
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print "Running tests on sre.findall"
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test(r"""sre.findall(r":+", "abc")""", [])
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test(r"""sre.findall(r":+", "a:b::c:::d")""", [":", "::", ":::"])
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test(r"""sre.findall(r"(:+)", "a:b::c:::d")""", [":", "::", ":::"])
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test(r"""sre.findall(r"(:)(:*)", "a:b::c:::d")""",
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[(":", ""), (":", ":"), (":", "::")])
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test(r"""sre.findall(r"(a)|(b)", "abc")""", [("a", ""), ("", "b")])
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# bug 117612
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test(r"""sre.findall(r"(a|(b))", "aba")""", [("a", ""),("b", "b"),("a", "")])
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if verbose:
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print "Running tests on sre.match"
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test(r"""sre.match(r'a', 'a').groups()""", ())
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test(r"""sre.match(r'(a)', 'a').groups()""", ('a',))
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test(r"""sre.match(r'(a)', 'a').group(0)""", 'a')
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test(r"""sre.match(r'(a)', 'a').group(1)""", 'a')
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test(r"""sre.match(r'(a)', 'a').group(1, 1)""", ('a', 'a'))
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pat = sre.compile(r'((a)|(b))(c)?')
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test(r"""pat.match('a').groups()""", ('a', 'a', None, None))
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test(r"""pat.match('b').groups()""", ('b', None, 'b', None))
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test(r"""pat.match('ac').groups()""", ('a', 'a', None, 'c'))
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test(r"""pat.match('bc').groups()""", ('b', None, 'b', 'c'))
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test(r"""pat.match('bc').groups("")""", ('b', "", 'b', 'c'))
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pat = sre.compile(r'(?:(?P<a1>a)|(?P<b2>b))(?P<c3>c)?')
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test(r"""pat.match('a').group(1, 2, 3)""", ('a', None, None))
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test(r"""pat.match('b').group('a1', 'b2', 'c3')""", (None, 'b', None))
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test(r"""pat.match('ac').group(1, 'b2', 3)""", ('a', None, 'c'))
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if verbose:
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print "Running tests on sre.escape"
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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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test(r"""sre.match(sre.escape(chr(i)), chr(i)) is not None""", 1)
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test(r"""sre.match(sre.escape(chr(i)), chr(i)).span()""", (0,1))
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pat = sre.compile(sre.escape(p))
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test(r"""pat.match(p) is not None""", 1)
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test(r"""pat.match(p).span()""", (0,256))
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if verbose:
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print 'Pickling a SRE_Pattern instance'
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try:
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import pickle
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pat = sre.compile(r'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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except:
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print TestFailed, 're module pickle' # expected
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try:
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import cPickle
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pat = sre.compile(r'a(?:b|(c|e){1,2}?|d)+?(.)')
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s = cPickle.dumps(pat)
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pat = cPickle.loads(s)
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except:
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print TestFailed, 're module cPickle' # expected
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# constants
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test(r"""sre.I""", sre.IGNORECASE)
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test(r"""sre.L""", sre.LOCALE)
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test(r"""sre.M""", sre.MULTILINE)
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test(r"""sre.S""", sre.DOTALL)
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test(r"""sre.X""", sre.VERBOSE)
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test(r"""sre.T""", sre.TEMPLATE)
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test(r"""sre.U""", sre.UNICODE)
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for flags in [sre.I, sre.M, sre.X, sre.S, sre.L, sre.T, sre.U]:
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try:
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r = sre.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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test(r"""sre.match(r'(x)*', 50000*'x').span()""",
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(0, 50000), RuntimeError)
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test(r"""sre.match(r'(x)*y', 50000*'x'+'y').span()""",
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(0, 50001), RuntimeError)
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test(r"""sre.match(r'(x)*?y', 50000*'x'+'y').span()""",
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(0, 50001)) # this works in 2.1
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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=sre.compile(pattern)
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except sre.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 (sre.error), msg:
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print '=== Unexpected exception', t, repr(msg)
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if outcome==SYNTAX_ERROR:
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print '=== Compiled incorrectly', t
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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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continue
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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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u = unicode(s, "latin-1")
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except NameError:
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pass
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else:
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result=obj.search(u)
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if result==None:
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print '=== Fails on unicode match', t
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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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try:
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u = unicode(pattern, "latin-1")
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except NameError:
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pass
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else:
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obj=sre.compile(u)
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result=obj.search(s)
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if result==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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obj=sre.compile(pattern)
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result=obj.search(s, result.start(0), result.end(0)+1)
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if result==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=sre.compile(pattern, sre.IGNORECASE)
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result=obj.search(s)
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if result==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=sre.compile(pattern, sre.LOCALE)
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result=obj.search(s)
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if result==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=sre.compile(pattern, sre.UNICODE)
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result=obj.search(s)
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if result==None:
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print '=== Fails on unicode-sensitive match', t
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