3 class TestRegexp < Test::Unit::TestCase
13 def test_ruby_dev_24643
14 assert_nothing_raised("[ruby-dev:24643]") {
15 /(?:(?:[a]*[a])?b)*a*$/ =~ "aabaaca"
19 def test_ruby_talk_116455
20 assert_match(/^(\w{2,}).* ([A-Za-z\xa2\xc0-\xff]{2,}?)$/n, "Hallo Welt")
23 def test_ruby_dev_24887
24 assert_equal("a".gsub(/a\Z/, ""), "")
27 def test_yoshidam_net_20041111_1
28 s = "[\xC2\xA0-\xC3\xBE]"
29 assert_match(Regexp.new(s, nil, "u"), "\xC3\xBE")
32 def test_yoshidam_net_20041111_2
33 assert_raise(RegexpError) do
34 s = "[\xFF-\xFF]".force_encoding("utf-8")
35 Regexp.new(s, nil, "u")
39 def test_ruby_dev_31309
40 assert_equal('Ruby', 'Ruby'.sub(/[^a-z]/i, '-'))
43 def test_assert_normal_exit
44 # moved from knownbug. It caused core.
45 Regexp.union("a", "a")
49 assert_equal '(?-mix:\x00)', Regexp.new("\0").to_s
53 assert_equal :ok, begin
56 Regexp.new("\xc2\xa1".force_encoding("euc-jp")),
57 Regexp.new("\xc2\xa1".force_encoding("utf-8")))
64 def test_named_capture
65 m = /&(?<foo>.*?);/.match("aaa & yyy")
66 assert_equal("amp", m["foo"])
67 assert_equal("amp", m[:foo])
68 assert_equal(5, m.begin(:foo))
69 assert_equal(8, m.end(:foo))
70 assert_equal([5,8], m.offset(:foo))
72 assert_equal("aaa [amp] yyy",
73 "aaa & yyy".sub(/&(?<foo>.*?);/, '[\k<foo>]'))
75 assert_equal('#<MatchData "& y" foo:"amp">',
76 /&(?<foo>.*?); (y)/.match("aaa & yyy").inspect)
77 assert_equal('#<MatchData "& y" 1:"amp" 2:"y">',
78 /&(.*?); (y)/.match("aaa & yyy").inspect)
79 assert_equal('#<MatchData "& y" foo:"amp" bar:"y">',
80 /&(?<foo>.*?); (?<bar>y)/.match("aaa & yyy").inspect)
81 assert_equal('#<MatchData "& y" foo:"amp" foo:"y">',
82 /&(?<foo>.*?); (?<foo>y)/.match("aaa & yyy").inspect)
84 /(?<id>[A-Za-z_]+)/ =~ "!abc"
85 assert_equal("abc", Regexp.last_match(:id))
87 /a/ =~ "b" # doesn't match.
88 assert_equal(nil, Regexp.last_match)
89 assert_equal(nil, Regexp.last_match(1))
90 assert_equal(nil, Regexp.last_match(:foo))
92 assert_equal(["foo", "bar"], /(?<foo>.)(?<bar>.)/.names)
93 assert_equal(["foo"], /(?<foo>.)(?<foo>.)/.names)
94 assert_equal([], /(.)(.)/.names)
96 assert_equal(["foo", "bar"], /(?<foo>.)(?<bar>.)/.match("ab").names)
97 assert_equal(["foo"], /(?<foo>.)(?<foo>.)/.match("ab").names)
98 assert_equal([], /(.)(.)/.match("ab").names)
100 assert_equal({"foo"=>[1], "bar"=>[2]},
101 /(?<foo>.)(?<bar>.)/.named_captures)
102 assert_equal({"foo"=>[1, 2]},
103 /(?<foo>.)(?<foo>.)/.named_captures)
104 assert_equal({}, /(.)(.)/.named_captures)
106 assert_equal("a[b]c", "abc".sub(/(?<x>[bc])/, "[\\k<x>]"))
109 def test_assign_named_capture
110 assert_equal("a", eval('/(?<foo>.)/ =~ "a"; foo'))
111 assert_equal("a", eval('foo = 1; /(?<foo>.)/ =~ "a"; foo'))
112 assert_equal("a", eval('1.times {|foo| /(?<foo>.)/ =~ "a"; break foo }'))
113 assert_nothing_raised { eval('/(?<Foo>.)/ =~ "a"') }
114 assert_nil(eval('/(?<Foo>.)/ =~ "a"; defined? Foo'))
117 def test_assign_named_capture_to_reserved_word
119 assert(!local_variables.include?(:nil), "[ruby-dev:32675]")
122 def test_match_regexp
125 assert_equal(r, m.regexp)
127 assert_equal(re, re.match("foo").regexp)
131 assert_equal('', //.source)
135 assert_equal('//', //.inspect)
136 assert_equal('//i', //i.inspect)
137 assert_equal('/\//i', /\//i.inspect)
138 assert_equal('/\//i', /#{'/'}/i.inspect)
139 assert_equal('/\/x/i', /\/x/i.inspect)
140 assert_equal('/\x00/i', /#{"\0"}/i.inspect)
141 assert_equal("/\n/i", /#{"\n"}/i.inspect)
143 assert_equal('/\/'+s+'/i', /\/#{s}/i.inspect)
146 def test_char_to_option
147 assert_equal("BAR", "FOOBARBAZ"[/b../i])
148 assert_equal("bar", "foobarbaz"[/ b . . /x])
149 assert_equal("bar\n", "foo\nbar\nbaz"[/b.../m])
150 assert_raise(SyntaxError) { eval('//z') }
153 def test_char_to_option_kcode
154 assert_equal("bar", "foobarbaz"[/b../s])
155 assert_equal("bar", "foobarbaz"[/b../e])
156 assert_equal("bar", "foobarbaz"[/b../u])
160 assert_equal('(?-mix:foo)', /(?:foo)/.to_s)
161 assert_equal('(?m-ix:foo)', /(?:foo)/m.to_s)
162 assert_equal('(?mi-x:foo)', /(?:foo)/mi.to_s)
163 assert_equal('(?mix:foo)', /(?:foo)/mix.to_s)
164 assert_equal('(?m-ix:foo)', /(?m-ix:foo)/.to_s)
165 assert_equal('(?mi-x:foo)', /(?mi-x:foo)/.to_s)
166 assert_equal('(?mix:foo)', /(?mix:foo)/.to_s)
167 assert_equal('(?mix:)', /(?mix)/.to_s)
168 assert_equal('(?-mix:(?mix:foo) )', /(?mix:foo) /.to_s)
172 assert_equal(false, /a/.casefold?)
173 assert_equal(true, /a/i.casefold?)
174 assert_equal(false, /(?i:a)/.casefold?)
178 assert_equal(Regexp::IGNORECASE, /a/i.options)
179 assert_equal(Regexp::EXTENDED, /a/x.options)
180 assert_equal(Regexp::MULTILINE, /a/m.options)
183 def test_match_init_copy
184 m = /foo/.match("foo")
185 assert_equal(/foo/, m.dup.regexp)
186 assert_raise(TypeError) do
187 m.instance_eval { initialize_copy(nil) }
189 assert_equal([0, 3], m.offset(0))
190 assert_equal(/foo/, m.dup.regexp)
194 m = /(.)(.)(\d+)(\d)/.match("THX1138.")
195 assert_equal(5, m.size)
198 def test_match_offset_begin_end
199 m = /(?<x>b..)/.match("foobarbaz")
200 assert_equal([3, 6], m.offset("x"))
201 assert_equal(3, m.begin("x"))
202 assert_equal(6, m.end("x"))
203 assert_raise(IndexError) { m.offset("y") }
204 assert_raise(IndexError) { m.offset(2) }
205 assert_raise(IndexError) { m.begin(2) }
206 assert_raise(IndexError) { m.end(2) }
208 m = /(?<x>q..)?/.match("foobarbaz")
209 assert_equal([nil, nil], m.offset("x"))
210 assert_equal(nil, m.begin("x"))
211 assert_equal(nil, m.end("x"))
213 m = /\A\u3042(.)(.)?(.)\z/.match("\u3042\u3043\u3044")
214 assert_equal([1, 2], m.offset(1))
215 assert_equal([nil, nil], m.offset(2))
216 assert_equal([2, 3], m.offset(3))
220 m = /(?<x>b..)/.match("foobarbaz")
221 assert_equal("bar", m.to_s)
224 def test_match_pre_post
225 m = /(?<x>b..)/.match("foobarbaz")
226 assert_equal("foo", m.pre_match)
227 assert_equal("baz", m.post_match)
231 m = /(...)(...)(...)(...)?/.match("foobarbaz")
232 assert_equal(["foobarbaz", "foo", "bar", "baz", nil], m.to_a)
235 def test_match_captures
236 m = /(...)(...)(...)(...)?/.match("foobarbaz")
237 assert_equal(["foo", "bar", "baz", nil], m.captures)
241 m = /(...)(...)(...)(...)?/.match("foobarbaz")
242 assert_equal("foo", m[1])
243 assert_equal(["foo", "bar", "baz"], m[1..3])
245 assert_raise(IndexError) { m[:foo] }
248 def test_match_values_at
249 m = /(...)(...)(...)(...)?/.match("foobarbaz")
250 assert_equal(["foo", "bar", "baz"], m.values_at(1, 2, 3))
253 def test_match_string
254 m = /(?<x>b..)/.match("foobarbaz")
255 assert_equal("foobarbaz", m.string)
258 def test_match_inspect
259 m = /(...)(...)(...)(...)?/.match("foobarbaz")
260 assert_equal('#<MatchData "foobarbaz" 1:"foo" 2:"bar" 3:"baz" 4:nil>', m.inspect)
264 assert_raise(ArgumentError) { Regexp.new }
265 assert_equal(/foo/, Regexp.new(/foo/, Regexp::IGNORECASE))
267 assert_raise(SecurityError) do
268 Thread.new { $SAFE = 4; re.instance_eval { initialize(re) } }.join
271 assert_raise(SecurityError) do
272 Thread.new { $SAFE = 4; re.instance_eval { initialize(re) } }.join
275 assert_equal(Encoding.find("US-ASCII"), Regexp.new("b..", nil, "n").encoding)
276 assert_equal("bar", "foobarbaz"[Regexp.new("b..", nil, "n")])
277 assert_equal(//n, Regexp.new("", nil, "n"))
279 assert_raise(RegexpError) { Regexp.new(")(") }
283 assert_raise(ArgumentError) { s = '\\'; /#{ s }/ }
284 assert_equal(/\177/, (s = '\177'; /#{ s }/))
285 assert_raise(ArgumentError) { s = '\u'; /#{ s }/ }
286 assert_raise(ArgumentError) { s = '\u{ ffffffff }'; /#{ s }/ }
287 assert_raise(ArgumentError) { s = '\u{ ffffff }'; /#{ s }/ }
288 assert_raise(ArgumentError) { s = '\u{ ffff X }'; /#{ s }/ }
289 assert_raise(ArgumentError) { s = '\u{ }'; /#{ s }/ }
290 assert_equal("b", "abc"[(s = '\u{0062}'; /#{ s }/)])
291 assert_equal("b", "abc"[(s = '\u0062'; /#{ s }/)])
292 assert_raise(ArgumentError) { s = '\u0'; /#{ s }/ }
293 assert_raise(ArgumentError) { s = '\u000X'; /#{ s }/ }
294 assert_raise(ArgumentError) { s = "\xff" + '\u3042'; /#{ s }/ }
295 assert_raise(ArgumentError) { s = '\u3042' + [0xff].pack("C"); /#{ s }/ }
296 assert_raise(SyntaxError) { s = ''; eval(%q(/\u#{ s }/)) }
298 assert_equal(/a/, eval(%q(s="\u0061";/#{s}/n)))
299 assert_raise(RegexpError) { s = "\u3042"; eval(%q(/#{s}/n)) }
300 assert_raise(RegexpError) { s = "\u0061"; eval(%q(/\u3042#{s}/n)) }
301 assert_raise(ArgumentError) { s1=[0xff].pack("C"); s2="\u3042"; eval(%q(/#{s1}#{s2}/)) }
303 assert_raise(ArgumentError) { s = '\x'; /#{ s }/ }
305 assert_equal("\xe1", [0x00, 0xe1, 0xff].pack("C*")[/\M-a/])
306 assert_equal("\xdc", [0x00, 0xdc, 0xff].pack("C*")[/\M-\\/])
307 assert_equal("\x8a", [0x00, 0x8a, 0xff].pack("C*")[/\M-\n/])
308 assert_equal("\x89", [0x00, 0x89, 0xff].pack("C*")[/\M-\t/])
309 assert_equal("\x8d", [0x00, 0x8d, 0xff].pack("C*")[/\M-\r/])
310 assert_equal("\x8c", [0x00, 0x8c, 0xff].pack("C*")[/\M-\f/])
311 assert_equal("\x8b", [0x00, 0x8b, 0xff].pack("C*")[/\M-\v/])
312 assert_equal("\x87", [0x00, 0x87, 0xff].pack("C*")[/\M-\a/])
313 assert_equal("\x9b", [0x00, 0x9b, 0xff].pack("C*")[/\M-\e/])
314 assert_equal("\x01", [0x00, 0x01, 0xff].pack("C*")[/\C-a/])
316 assert_raise(ArgumentError) { s = '\M'; /#{ s }/ }
317 assert_raise(ArgumentError) { s = '\M-\M-a'; /#{ s }/ }
318 assert_raise(ArgumentError) { s = '\M-\\'; /#{ s }/ }
320 assert_raise(ArgumentError) { s = '\C'; /#{ s }/ }
321 assert_raise(ArgumentError) { s = '\c'; /#{ s }/ }
322 assert_raise(ArgumentError) { s = '\C-\C-a'; /#{ s }/ }
324 assert_raise(ArgumentError) { s = '\M-\z'; /#{ s }/ }
325 assert_raise(ArgumentError) { s = '\M-\777'; /#{ s }/ }
327 assert_equal("\u3042\u3042", "\u3042\u3042"[(s = "\u3042" + %q(\xe3\x81\x82); /#{s}/)])
328 assert_raise(ArgumentError) { s = "\u3042" + %q(\xe3); /#{s}/ }
329 assert_raise(ArgumentError) { s = "\u3042" + %q(\xe3\xe3); /#{s}/ }
330 assert_raise(ArgumentError) { s = '\u3042' + [0xff].pack("C"); /#{s}/ }
332 assert_raise(SyntaxError) { eval("/\u3042/n") }
335 5.times { s.sub!(".", "") }
336 assert_equal(".....", s)
340 assert_equal(true, /abc/ == /abc/)
341 assert_equal(false, /abc/ == /abc/m)
342 assert_equal(false, /abc/ == /abd/)
346 assert_nil(//.match(nil))
347 assert_equal("abc", /.../.match(:abc)[0])
348 assert_raise(TypeError) { /.../.match(Object.new)[0] }
349 assert_equal("bc", /../.match('abc', 1)[0])
350 assert_equal("bc", /../.match('abc', -2)[0])
351 assert_nil(/../.match("abc", -4))
352 assert_nil(/../.match("abc", 4))
353 assert_equal('\x', /../n.match("\u3042" + '\x', 1)[0])
356 /.../.match("abc") {|m| r = m[0] }
357 assert_equal("abc", r)
359 $_ = "abc"; assert_equal(1, ~/bc/)
360 $_ = "abc"; assert_nil(~/d/)
361 $_ = nil; assert_nil(~/./)
365 assert_equal(false, /../ === nil)
369 assert_equal("\xff", Regexp.quote([0xff].pack("C")))
370 assert_equal("\\ ", Regexp.quote("\ "))
371 assert_equal("\\t", Regexp.quote("\t"))
372 assert_equal("\\n", Regexp.quote("\n"))
373 assert_equal("\\r", Regexp.quote("\r"))
374 assert_equal("\\f", Regexp.quote("\f"))
375 assert_equal("\\v", Regexp.quote("\v"))
376 assert_equal("\u3042\\t", Regexp.quote("\u3042\t"))
377 assert_equal("\\t\xff", Regexp.quote("\t" + [0xff].pack("C")))
381 assert_equal(/re/, Regexp.try_convert(/re/))
382 assert_nil(Regexp.try_convert("re"))
385 assert_nil(Regexp.try_convert(o))
386 def o.to_regexp() /foo/ end
387 assert_equal(/foo/, Regexp.try_convert(o))
391 assert_equal(/(?!)/, Regexp.union)
392 assert_equal(/foo/, Regexp.union(/foo/))
393 assert_equal(/foo/, Regexp.union([/foo/]))
394 assert_equal(/\t/, Regexp.union("\t"))
395 assert_equal(/(?-mix:\u3042)|(?-mix:\u3042)/, Regexp.union(/\u3042/, /\u3042/))
396 assert_equal("\u3041", "\u3041"[Regexp.union(/\u3042/, "\u3041")])
400 assert_equal(//, //.dup)
401 assert_raise(TypeError) { //.instance_eval { initialize_copy(nil) } }
405 assert_equal("fooXXXbaz", "foobarbaz".sub!(/bar/, "XXX"))
407 assert_equal(s, "X".sub!(/./, s))
408 assert_equal('\\' + s, "X".sub!(/./, '\\' + s))
409 assert_equal('\k', "foo".sub!(/.../, '\k'))
410 assert_raise(RuntimeError) { "foo".sub!(/(?<x>o)/, '\k<x') }
411 assert_equal('foo[bar]baz', "foobarbaz".sub!(/(b..)/, '[\0]'))
412 assert_equal('foo[foo]baz', "foobarbaz".sub!(/(b..)/, '[\`]'))
413 assert_equal('foo[baz]baz', "foobarbaz".sub!(/(b..)/, '[\\\']'))
414 assert_equal('foo[r]baz', "foobarbaz".sub!(/(b)(.)(.)/, '[\+]'))
415 assert_equal('foo[\\]baz', "foobarbaz".sub!(/(b..)/, '[\\\\]'))
416 assert_equal('foo[\z]baz', "foobarbaz".sub!(/(b..)/, '[\z]'))
421 assert_nothing_raised { $KCODE = nil }
422 assert_equal(false, $=)
423 assert_nothing_raised { $= = nil }
426 def test_match_setter
431 assert_equal("foo", $&)
435 /(...)(...)(...)(...)?/.match("foobarbaz")
436 assert_equal("foobarbaz", Regexp.last_match(0))
437 assert_equal("foo", Regexp.last_match(1))
438 assert_nil(Regexp.last_match(5))
439 assert_nil(Regexp.last_match(-1))
443 alias $__REGEXP_TEST_LASTMATCH__ $&
444 alias $__REGEXP_TEST_PREMATCH__ $`
445 alias $__REGEXP_TEST_POSTMATCH__ $'
446 alias $__REGEXP_TEST_LASTPARENMATCH__ $+
447 /(b)(.)(.)/.match("foobarbaz")
448 assert_equal("bar", $__REGEXP_TEST_LASTMATCH__)
449 assert_equal("foo", $__REGEXP_TEST_PREMATCH__)
450 assert_equal("baz", $__REGEXP_TEST_POSTMATCH__)
451 assert_equal("r", $__REGEXP_TEST_LASTPARENMATCH__)
453 /(...)(...)(...)/.match("foobarbaz")
454 assert_equal("baz", $+)
457 def test_rindex_regexp
458 assert_equal(3, "foobarbaz\u3042".rindex(/b../n, 5))
470 def check(re, ss, fs = [])
471 re = Regexp.new(re) unless re.is_a?(Regexp)
472 ss = [ss] unless ss.is_a?(Array)
477 assert_equal(e, m[0])
479 fs = [fs] unless fs.is_a?(Array)
480 fs.each {|s| assert_no_match(re, s) }
484 assert_raise(RegexpError) { /#{ re }/ }
488 check(/\*\+\?\{\}\|\(\)\<\>\`\'/, "*+?{}|()<>`'")
489 check(/\A\w\W\z/, %w(a. b!), %w(.. ab))
490 check(/\A.\b.\b.\B.\B.\z/, %w(a.aaa .a...), %w(aaaaa .....))
491 check(/\A\s\S\z/, [' a', "\n."], [' ', "\n\n", 'a '])
492 check(/\A\d\D\z/, '0a', %w(00 aa))
493 check(/\A\h\H\z/, %w(0g ag BH), %w(a0 af GG))
494 check(/\Afoo\Z\s\z/, "foo\n", ["foo", "foo\nbar"])
495 assert_equal(%w(a b c), "abc def".scan(/\G\w/))
496 check(/\A\u3042\z/, "\u3042", ["", "\u3043", "a"])
497 check(/\A(..)\1\z/, %w(abab ....), %w(abba aba))
499 check(/\A\80\z/, "80", ["\100", ""])
500 check(/\A\77\z/, "?")
501 check(/\A\78\z/, "\7" + '8', ["\100", ""])
502 check(/\A\Qfoo\E\z/, "QfooE")
503 check(/\Aa++\z/, "aaa")
504 check('\Ax]\z', "x]")
505 check(/x#foo/x, "x", "#foo")
506 check(/\Ax#foo#{ "\n" }x\z/x, "xx", ["x", "x#foo\nx"])
507 check(/\A\p{Alpha}\z/, ["a", "z"], [".", "", ".."])
508 check(/\A\p{^Alpha}\z/, [".", "!"], ["!a", ""])
509 check(/\A\n\z/, "\n")
510 check(/\A\t\z/, "\t")
511 check(/\A\r\z/, "\r")
512 check(/\A\f\z/, "\f")
513 check(/\A\a\z/, "\007")
514 check(/\A\e\z/, "\033")
515 check(/\A\v\z/, "\v")
518 failcheck('/\p{foobarbazqux}/')
519 failcheck('/\p{foobarbazqux' + 'a' * 1000 + '}/')
520 failcheck('/[1-\w]/')
524 check(/A*B/, %w(B AB AAB AAAB), %w(A))
525 check(/\w*!/, %w(! a! ab! abc!), %w(abc))
526 check(/\w*\W/, %w(! a" ab# abc$), %w(abc))
527 check(/\w*\w/, %w(z az abz abcz), %w(!))
528 check(/[a-z]*\w/, %w(z az abz abcz), %w(!))
529 check(/[a-z]*\W/, %w(! a" ab# abc$), %w(A))
530 check(/((a|bb|ccc|dddd)(1|22|333|4444))/i, %w(a1 bb1 a22), %w(a2 b1))
531 check(/\u0080/, (1..4).map {|i| ["\u0080", "\u0080" * i] }, ["\u0081"])
532 check(/\u0080\u0080/, (2..4).map {|i| ["\u0080" * 2, "\u0080" * i] }, ["\u0081"])
533 check(/\u0080\u0080\u0080/, (3..4).map {|i| ["\u0080" * 3, "\u0080" * i] }, ["\u0081"])
534 check(/\u0080\u0080\u0080\u0080/, (4..4).map {|i| ["\u0080" * 4, "\u0080" * i] }, ["\u0081"])
535 check(/[^\u3042\u3043\u3044]/, %W(a b \u0080 \u3041 \u3045), %W(\u3042 \u3043 \u3044))
536 check(/a.+/m, %W(a\u0080 a\u0080\u0080 a\u0080\u0080\u0080), %W(a))
537 check(/a.+z/m, %W(a\u0080z a\u0080\u0080z a\u0080\u0080\u0080z), %W(az))
538 check(/abc\B.\Bxyz/, %w(abcXxyz abc0xyz), %w(abc|xyz abc-xyz))
539 check(/\Bxyz/, [%w(xyz abcXxyz), %w(xyz abc0xyz)], %w(abc xyz abc-xyz))
540 check(/abc\B/, [%w(abc abcXxyz), %w(abc abc0xyz)], %w(abc xyz abc-xyz))
541 failcheck('(?<foo>abc)\1')
542 check(/^(A+|B+)(?>\g<1>)*[BC]$/, %w(AC BC ABC BAC AABBC), %w(AABB))
543 check(/^(A+|B(?>\g<1>)*)[AC]$/, %w(AAAC BBBAAAAC), %w(BBBAAA))
544 check(/^()(?>\g<1>)*$/, "", "a")
545 check(/^(?>(?=a)(#{ "a" * 1000 }|))++$/, ["a" * 1000, "a" * 2000, "a" * 3000], ["", "a" * 500, "b" * 1000])
546 check(eval('/^(?:a?)?$/'), ["", "a"], ["aa"])
547 check(eval('/^(?:a+)?$/'), ["", "a", "aa"], ["ab"])
548 check(/^(?:a?)+?$/, ["", "a", "aa"], ["ab"])
549 check(/^a??[ab]/, [["a", "a"], ["a", "aa"], ["b", "b"], ["a", "ab"]], ["c"])
550 check(/^(?:a*){3,5}$/, ["", "a", "aa", "aaa", "aaaa", "aaaaa", "aaaaaa"], ["b"])
551 check(/^(?:a+){3,5}$/, ["aaa", "aaaa", "aaaaa", "aaaaaa"], ["", "a", "aa", "b"])
554 def test_parse_look_behind
555 check(/(?<=A)B(?=C)/, [%w(B ABC)], %w(aBC ABc aBc))
556 check(/(?<!A)B(?!C)/, [%w(B aBc)], %w(ABC aBC ABc))
559 check(/(?<=A|B.)C/, [%w(C AC), %w(C BXC)], %w(C BC))
560 check(/(?<!A|B.)C/, [%w(C C), %w(C BC)], %w(AC BXC))
564 check(/\A(.)(.)\k<1>(.)\z/, %w(abac abab ....), %w(abcd aaba xxx))
565 check(/\A(.)(.)\k<-1>(.)\z/, %w(abbc abba ....), %w(abcd aaba xxx))
566 check(/\A(?<n>.)(?<x>\g<n>){0}(?<y>\k<n+0>){0}\g<x>\g<y>\z/, "aba", "abb")
567 check(/\A(?<n>.)(?<x>\g<n>){0}(?<y>\k<n+1>){0}\g<x>\g<y>\z/, "abb", "aba")
568 check(/\A(?<x>..)\k<x>\z/, %w(abab ....), %w(abac abba xxx))
569 check(/\A(.)(..)\g<-1>\z/, "abcde", %w(.... ......))
578 failcheck('()\k<-2>')
579 failcheck('()\g<-2>')
580 check(/\A(?<x>.)(?<x>.)\k<x>\z/, %w(aba abb), %w(abc .. ....))
581 check(/\A(?<x>.)(?<x>.)\k<x>\z/i, %w(aba ABa abb ABb), %w(abc .. ....))
583 failcheck('(.\g<1>)')
584 failcheck('(.\g<2>)')
585 failcheck('(?=\g<1>)')
586 failcheck('((?=\g<1>))')
587 failcheck('(\g<1>|.)')
588 failcheck('(.|\g<1>)')
589 check(/(!)(?<=(a)|\g<1>)/, ["!"], %w(a))
590 check(/^(a|b\g<1>c)$/, %w(a bac bbacc bbbaccc), %w(bbac bacc))
591 check(/^(a|b\g<2>c)(B\g<1>C){0}$/, %w(a bBaCc bBbBaCcCc bBbBbBaCcCcCc), %w(bBbBaCcC BbBaCcCc))
592 check(/\A(?<n>.|X\g<n>)(?<x>\g<n>){0}(?<y>\k<n+0>){0}\g<x>\g<y>\z/, "XXaXbXXa", %w(XXabXa abb))
593 check(/\A(?<n>.|X\g<n>)(?<x>\g<n>){0}(?<y>\k<n+1>){0}\g<x>\g<y>\z/, "XaXXbXXb", %w(aXXbXb aba))
594 failcheck('(?<x>)(?<x>)(\g<x>)')
595 check(/^(?<x>foo)(bar)\k<x>/, %w(foobarfoo), %w(foobar barfoo))
596 check(/^(?<a>f)(?<a>o)(?<a>o)(?<a>b)(?<a>a)(?<a>r)(?<a>b)(?<a>a)(?<a>z)\k<a>{9}$/, %w(foobarbazfoobarbaz foobarbazbazbarfoo foobarbazzabraboof), %w(foobar barfoo))
599 def test_parse_curly_brace
600 check(/\A{/, ["{", ["{", "{x"]])
601 check(/\A{ /, ["{ ", ["{ ", "{ x"]])
602 check(/\A{,}\z/, "{,}")
603 check(/\A{}\z/, "{}")
604 check(/\Aa{0}+\z/, "", %w(a aa aab))
605 check(/\Aa{1}+\z/, %w(a aa), ["", "aab"])
606 check(/\Aa{1,2}b{1,2}\z/, %w(ab aab abb aabb), ["", "aaabb", "abbb"])
607 check(/(?!x){0,1}/, [ ['', 'ab'], ['', ''] ])
608 check(/c\z{0,1}/, [ ['c', 'abc'], ['c', 'cab']], ['abd'])
609 check(/\A{0,1}a/, [ ['a', 'abc'], ['a', '____abc']], ['bcd'])
610 failcheck('.{100001}')
611 failcheck('.{0,100001}')
616 def test_parse_comment
617 check(/\A(?#foo\)bar)\z/, "", "a")
622 check(/\u3042\d/, ["\u30421", "\u30422"])
624 # CClassTable cache test
625 assert(/\u3042\d/.match("\u30421"))
626 assert(/\u3042\d/.match("\u30422"))
632 check('\A[]]\z', "]", "")
633 check('\A[]\.]+\z', %w(] . ]..]), ["", "["])
634 check(/\A[\u3042]\z/, "\u3042", "\u3042aa")
635 check(/\A[\u3042\x61]+\z/, ["aa\u3042aa", "\u3042\u3042", "a"], ["", "b"])
636 check(/\A[\u3042\x61\x62]+\z/, "abab\u3042abab\u3042")
637 check(/\A[abc]+\z/, "abcba", ["", "ada"])
638 check(/\A[\w][\W]\z/, %w(a. b!), %w(.. ab))
639 check(/\A[\s][\S]\z/, [' a', "\n."], [' ', "\n\n", 'a '])
640 check(/\A[\d][\D]\z/, '0a', %w(00 aa))
641 check(/\A[\h][\H]\z/, %w(0g ag BH), %w(a0 af GG))
642 check(/\A[\p{Alpha}]\z/, ["a", "z"], [".", "", ".."])
643 check(/\A[\p{^Alpha}]\z/, [".", "!"], ["!a", ""])
644 check(/\A[\xff]\z/, "\xff", ["", "\xfe"])
645 check(/\A[\80]+\z/, "8008", ["\\80", "\100", "\1000"])
646 check(/\A[\77]+\z/, "???")
647 check(/\A[\78]+\z/, "\788\7")
648 check(/\A[\0]\z/, "\0")
649 check(/\A[[:0]]\z/, [":", "0"], ["", ":0"])
650 check(/\A[0-]\z/, ["0", "-"], "0-")
651 check('\A[a-&&\w]\z', "a", "-")
652 check('\A[--0]\z', ["-", "/", "0"], ["", "1"])
653 check('\A[\'--0]\z', %w(* + \( \) 0 ,), ["", ".", "1"])
654 check(/\A[a-b-]\z/, %w(a b -), ["", "c"])
655 check('\A[a-b-&&\w]\z', %w(a b), ["", "-"])
656 check('\A[a-b-&&\W]\z', "-", ["", "a", "b"])
657 check('\A[a-c-e]\z', %w(a b c e), %w(- d)) # is it OK?
658 check(/\A[a-f&&[^b-c]&&[^e]]\z/, %w(a d f), %w(b c e g 0))
659 check(/\A[[^b-c]&&[^e]&&a-f]\z/, %w(a d f), %w(b c e g 0))
660 check(/\A[\n\r\t]\z/, ["\n", "\r", "\t"])
664 def test_posix_bracket
665 check(/\A[[:alpha:]0]\z/, %w(0 a), %w(1 .))
666 check(/\A[[:^alpha:]0]\z/, %w(0 1 .), "a")
667 check(/\A[[:alpha\:]]\z/, %w(a l p h a :), %w(b 0 1 .))
668 check(/\A[[:alpha:foo]0]\z/, %w(0 a), %w(1 .))
669 check(/\A[[:xdigit:]&&[:alpha:]]\z/, "a", %w(g 0))
670 check('\A[[:abcdefghijklmnopqrstu:]]+\z', "[]")
671 failcheck('[[:alpha')
672 failcheck('[[:alpha:')
673 failcheck('[[:alp:]]')
677 assert_equal(3, "foobar".rindex(/b.r/i))
678 assert_equal(nil, "foovar".rindex(/b.r/i))
679 assert_equal(3, ("foo" + "bar" * 1000).rindex(/#{"bar"*1000}/))
680 assert_equal(4, ("foo\nbar\nbaz\n").rindex(/bar/i))
683 def test_uninitialized
684 assert_raise(TypeError) { Regexp.allocate.hash }
685 assert_raise(TypeError) { Regexp.allocate.eql? Regexp.allocate }
686 assert_raise(TypeError) { Regexp.allocate == Regexp.allocate }
687 assert_raise(TypeError) { Regexp.allocate =~ "" }
688 assert_equal(false, Regexp.allocate === Regexp.allocate)
689 assert_nil(~Regexp.allocate)
690 assert_raise(TypeError) { Regexp.allocate.match("") }
691 assert_raise(TypeError) { Regexp.allocate.to_s }
692 assert_match(/^#<Regexp:.*>$/, Regexp.allocate.inspect)
693 assert_raise(TypeError) { Regexp.allocate.source }
694 assert_raise(TypeError) { Regexp.allocate.casefold? }
695 assert_raise(TypeError) { Regexp.allocate.options }
696 assert_equal(Encoding.find("ASCII-8BIT"), Regexp.allocate.encoding)
697 assert_equal(false, Regexp.allocate.fixed_encoding?)
698 assert_raise(TypeError) { Regexp.allocate.names }
699 assert_raise(TypeError) { Regexp.allocate.named_captures }
701 assert_raise(TypeError) { MatchData.allocate.regexp }
702 assert_raise(TypeError) { MatchData.allocate.names }
703 assert_raise(TypeError) { MatchData.allocate.size }
704 assert_raise(TypeError) { MatchData.allocate.length }
705 assert_raise(TypeError) { MatchData.allocate.offset(0) }
706 assert_raise(TypeError) { MatchData.allocate.begin(0) }
707 assert_raise(TypeError) { MatchData.allocate.end(0) }
708 assert_raise(TypeError) { MatchData.allocate.to_a }
709 assert_raise(TypeError) { MatchData.allocate[:foo] }
710 assert_raise(TypeError) { MatchData.allocate.captures }
711 assert_raise(TypeError) { MatchData.allocate.values_at }
712 assert_raise(TypeError) { MatchData.allocate.pre_match }
713 assert_raise(TypeError) { MatchData.allocate.post_match }
714 assert_raise(TypeError) { MatchData.allocate.to_s }
715 assert_match(/^#<MatchData:.*>$/, MatchData.allocate.inspect)
716 assert_raise(TypeError) { MatchData.allocate.string }
717 $~ = MatchData.allocate
718 assert_raise(TypeError) { $& }
719 assert_raise(TypeError) { $` }
720 assert_raise(TypeError) { $' }
721 assert_raise(TypeError) { $+ }
725 assert_match(/^\u3042{0}\p{Any}$/, "a")
726 assert_match(/^\u3042{0}\p{Any}$/, "\u3041")
727 assert_match(/^\u3042{0}\p{Any}$/, "\0")
728 assert_no_match(/^\u3042{0}\p{Any}$/, "\0\0")
729 assert_no_match(/^\u3042{0}\p{Any}$/, "")
730 assert_raise(SyntaxError) { eval('/^\u3042{0}\p{' + "\u3042" + '}$/') }
731 assert_raise(SyntaxError) { eval('/^\u3042{0}\p{' + 'a' * 1000 + '}$/') }
732 assert_raise(SyntaxError) { eval('/^\u3042{0}\p{foobarbazqux}$/') }
733 assert_match(/^(\uff21)(a)\1\2$/i, "\uff21A\uff41a")
734 assert_no_match(/^(\uff21)\1$/i, "\uff21A")
735 assert_no_match(/^(\uff41)\1$/i, "\uff41a")
736 assert_match(/^\u00df$/i, "\u00df")
737 assert_match(/^\u00df$/i, "ss")
738 #assert_match(/^(\u00df)\1$/i, "\u00dfss") # this must be bug...
739 assert_match(/^\u00df{2}$/i, "\u00dfss")
740 assert_match(/^\u00c5$/i, "\u00c5")
741 assert_match(/^\u00c5$/i, "\u00e5")
742 assert_match(/^\u00c5$/i, "\u212b")
743 assert_match(/^(\u00c5)\1\1$/i, "\u00c5\u00e5\u212b")
744 assert_match(/^\u0149$/i, "\u0149")
745 assert_match(/^\u0149$/i, "\u02bcn")
746 #assert_match(/^(\u0149)\1$/i, "\u0149\u02bcn") # this must be bug...
747 assert_match(/^\u0149{2}$/i, "\u0149\u02bcn")
748 assert_match(/^\u0390$/i, "\u0390")
749 assert_match(/^\u0390$/i, "\u03b9\u0308\u0301")
750 #assert_match(/^(\u0390)\1$/i, "\u0390\u03b9\u0308\u0301") # this must be bug...
751 assert_match(/^\u0390{2}$/i, "\u0390\u03b9\u0308\u0301")
752 assert_match(/^\ufb05$/i, "\ufb05")
753 assert_match(/^\ufb05$/i, "\ufb06")
754 assert_match(/^\ufb05$/i, "st")
755 #assert_match(/^(\ufb05)\1\1$/i, "\ufb05\ufb06st") # this must be bug...
756 assert_match(/^\ufb05{3}$/i, "\ufb05\ufb06st")
757 assert_match(/^\u03b9\u0308\u0301$/i, "\u0390")
758 assert_nothing_raised { 0x03ffffff.chr("utf-8").size }
759 assert_nothing_raised { 0x7fffffff.chr("utf-8").size }