tests/corelib_strong/regexp/global_test.dart - Issue 2989863002: Migrated test block 19 to Dart 2.0.

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Issue 2989863002: Migrated test block 19 to Dart 2.0. (Closed)

Patch Set: Created 3 years, 4 months ago

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1 // Copyright (c) 2014, the Dart project authors. All rights reserved.

2 // Copyright 2012 the V8 project authors. All rights reserved.

3 // Redistribution and use in source and binary forms, with or without

4 // modification, are permitted provided that the following conditions are

5 // met:

6 //

7 // * Redistributions of source code must retain the above copyright

8 // notice, this list of conditions and the following disclaimer.

9 // * Redistributions in binary form must reproduce the above

10 // copyright notice, this list of conditions and the following

11 // disclaimer in the documentation and/or other materials provided

12 // with the distribution.

13 // * Neither the name of Google Inc. nor the names of its

14 // contributors may be used to endorse or promote products derived

15 // from this software without specific prior written permission.

16 //

17 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

18 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

19 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

20 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

21 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

22 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

23 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

24 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

25 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

26 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

27 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

28

29 import 'v8_regexp_utils.dart';

30 import 'package:expect/expect.dart';

31

32 void main() {

33 var str = "ABX X";

34 str = str.replaceAll(new RegExp(r"(\w)?X"), "c");

35 assertEquals("Ac c", str);

36

37 // Test zero-length matches.

38 str = "Als Gregor Samsa eines Morgens";

39 str = str.replaceAll(new RegExp(r"\b"), "/");

40 assertEquals("/Als/ /Gregor/ /Samsa/ /eines/ /Morgens/", str);

41

42 // Test zero-length matches that have non-zero-length sub-captures.

43 str = "It was a pleasure to burn.";

44 str = str.replaceAllMapped(

45 new RegExp(r"(?=(\w+))\b"), (Match m) => m.group(1).length.toString());

46 assertEquals("2It 3was 1a 8pleasure 2to 4burn.", str);

47

48 // Test multiple captures.

49 str = "Try not. Do, or do not. There is no try.";

50 str = str.replaceAllMapped(

51 new RegExp(r"(not?)\|(do)\|(try)", caseSensitive: false), (m) {

52 if (m.group(1) != null) return "-";

53 if (m.group(2) != null) return "+";

54 if (m.group(3) != null) return "=";

55 });

56 assertEquals("= -. +, or + -. There is - =.", str);

57

58 // Test multiple alternate captures.

59 str = "FOUR LEGS GOOD, TWO LEGS BAD!";

60 str = str.replaceAllMapped(new RegExp(r"(FOUR\|TWO) LEGS (GOOD\|BAD)"), (m) {

61 if (m.group(1) == "FOUR") assertTrue(m.group(2) == "GOOD");

62 if (m.group(1) == "TWO") assertTrue(m.group(2) == "BAD");

63 return m.group(0).length - 10;

64 });

65 assertEquals("4, 2!", str);

66

67 // The same tests with UC16.

68

69 //Test that an optional capture is cleared between two matches.

70 str = "AB\u1234 \u1234";

71 str = str.replaceAll(new RegExp(r"(\w)?\u1234"), "c");

72 assertEquals("Ac c", str);

73

74 // Test zero-length matches.

75 str = "Als \u2623\u2642 eines Morgens";

76 str = str.replaceAll(new RegExp(r"\b"), "/");

77

78 // Test zero-length matches that have non-zero-length sub-captures.

79 str = "It was a pleasure to \u70e7.";

80 str = str.replaceAllMapped(

81 new RegExp(r"(?=(\w+))\b"), (m) => "${m.group(1).length}");

82 assertEquals("2It 3was 1a 8pleasure 2to \u70e7.", str);

83

84 // Test multiple captures.

85 str = "Try not. D\u26aa, or d\u26aa not. There is no try.";

86 str = str.replaceAllMapped(

87 new RegExp(r"(not?)\|(d\u26aa)\|(try)", caseSensitive: false), (m) {

88 if (m.group(1) != null) return "-";

89 if (m.group(2) != null) return "+";

90 if (m.group(3) != null) return "=";

91 });

92 assertEquals("= -. +, or + -. There is - =.", str);

93

94 // Test multiple alternate captures.

95 str = "FOUR \u817f GOOD, TWO \u817f BAD!";

96 str = str.replaceAllMapped(new RegExp(r"(FOUR\|TWO) \u817f (GOOD\|BAD)"), (m) {

97 if (m.group(1) == "FOUR") assertTrue(m.group(2) == "GOOD");

98 if (m.group(1) == "TWO") assertTrue(m.group(2) == "BAD");

99 return m.group(0).length - 7;

100 });

101 assertEquals("4, 2!", str);

102

103 // Test capture that is a real substring.

104 str = "Beasts of England, beasts of Ireland";

105 str = str.replaceAll(new RegExp(r"(.*)"), '~');

106 assertEquals("~~", str);

107

108 // Test zero-length matches that have non-zero-length sub-captures that do not

109 // start at the match start position.

110 str = "up up up up";

111 str = str.replaceAllMapped(

112 new RegExp(r"\b(?=u(p))"), (m) => "${m.group(1).length}");

113

114 assertEquals("1up 1up 1up 1up", str);

115

116 // Create regexp that has a lot of captures.

117 var re_string = "(a)";

118 for (var i = 0; i < 500; i++) {

119 re_string = "(" + re_string + ")";

120 }

121 re_string = re_string + "1";

122 // re_string = "(((...((a))...)))1"

123

124 var regexps = new List();

125 var last_match_expectations = new List();

126 var first_capture_expectations = new List();

127

128 // Atomic regexp.

129 regexps.add(new RegExp(r"a1"));

130 last_match_expectations.add("a1");

131 first_capture_expectations.add("");

132 // Small regexp (no capture);

133 regexps.add(new RegExp(r"\w1"));

134 last_match_expectations.add("a1");

135 first_capture_expectations.add("");

136 // Small regexp (one capture).

137 regexps.add(new RegExp(r"(a)1"));

138 last_match_expectations.add("a1");

139 first_capture_expectations.add("a");

140 // Large regexp (a lot of captures).

141 regexps.add(new RegExp(re_string));

142 last_match_expectations.add("a1");

143 first_capture_expectations.add("a");

144

145 dynamic test_replace(result_expectation, subject, regexp, replacement) {

146 for (var i = 0; i < regexps.length; i++) {

147 // Conduct tests.

148 assertEquals(

149 result_expectation, subject.replaceAll(regexps[i], replacement));

150 }

151 }

152

153 // Test for different number of matches.

154 for (var m = 0; m < 33; m++) {

155 // Create string that matches m times.

156 var subject = "";

157 var test_1_expectation = "";

158 var test_2_expectation = "";

159 var test_3_expectation = (m == 0) ? null : new List();

160 for (var i = 0; i < m; i++) {

161 subject += "a11";

162 test_1_expectation += "x1";

163 test_2_expectation += "1";

164 test_3_expectation.add("a1");

165 }

166

167 // Test 1a: String.replace with string.

168 test_replace(test_1_expectation, subject, new RegExp(r"a1"), "x");

169

170 // Test 2a: String.replace with empty string.

171 test_replace(test_2_expectation, subject, new RegExp(r"a1"), "");

172 }

173

174 // Test String hashing (compiling regular expression includes hashing).

175 var crosscheck = "\x80";

176 for (var i = 0; i < 12; i++) crosscheck += crosscheck;

177 new RegExp(crosscheck);

178

179 var subject = "ascii~only~string~here~";

180 var replacement = "\x80";

181 var result = subject.replaceAll(new RegExp(r"~"), replacement);

182 for (var i = 0; i < 5; i++) result += result;

183 new RegExp(result);

184 }

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