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| 1 description("This page tests toString conversion of RegExp objects, particularly
wrt to '/' characters and RegExp.prototype."); | |
| 2 | |
| 3 function testForwardSlash(pattern, _string) | |
| 4 { | |
| 5 string = _string; | |
| 6 | |
| 7 re1 = new RegExp(pattern); | |
| 8 re2 = eval(re1.toString()); | |
| 9 | |
| 10 return re1.test(string) && re2.test(string); | |
| 11 } | |
| 12 | |
| 13 function testLineTerminator(pattern) | |
| 14 { | |
| 15 re1 = new RegExp(pattern); | |
| 16 | |
| 17 return /\n|\r|\u2028|\u2029/.test(re1.toString()); | |
| 18 } | |
| 19 | |
| 20 shouldBe("RegExp('/').source", '"\\\\/"'); | |
| 21 shouldBe("RegExp('').source", '"(?:)"'); | |
| 22 shouldBe("RegExp.prototype.source", '"(?:)"'); | |
| 23 | |
| 24 shouldBe("RegExp('/').toString()", '"/\\\\//"'); | |
| 25 shouldBe("RegExp('').toString()", '"/(?:)/"'); | |
| 26 shouldBe("RegExp.prototype.toString()", '"/(?:)/"'); | |
| 27 | |
| 28 // These strings are equivalent, since the '\' is identity escaping the '/' at t
he string level. | |
| 29 shouldBeTrue('testForwardSlash("^/$", "/");'); | |
| 30 shouldBeTrue('testForwardSlash("^\/$", "/");'); | |
| 31 // This string passes "^\/$" to the RegExp, so the '/' is escaped in the re! | |
| 32 shouldBeTrue('testForwardSlash("^\\/$", "/");'); | |
| 33 // These strings pass "^\\/$" and "^\\\/$" respectively to the RegExp, giving on
e '\' to match. | |
| 34 shouldBeTrue('testForwardSlash("^\\\\/$", "\\/");'); | |
| 35 shouldBeTrue('testForwardSlash("^\\\\\\/$", "\\/");'); | |
| 36 // These strings match two backslashes (the second with the '/' escaped). | |
| 37 shouldBeTrue('testForwardSlash("^\\\\\\\\/$", "\\\\/");'); | |
| 38 shouldBeTrue('testForwardSlash("^\\\\\\\\\\/$", "\\\\/");'); | |
| 39 // Test that nothing goes wrongif there are multiple forward slashes! | |
| 40 shouldBeTrue('testForwardSlash("x/x/x", "x\\/x\\/x");'); | |
| 41 shouldBeTrue('testForwardSlash("x\\/x/x", "x\\/x\\/x");'); | |
| 42 shouldBeTrue('testForwardSlash("x/x\\/x", "x\\/x\\/x");'); | |
| 43 shouldBeTrue('testForwardSlash("x\\/x\\/x", "x\\/x\\/x");'); | |
| 44 | |
| 45 shouldBeFalse('testLineTerminator("\\n");'); | |
| 46 shouldBeFalse('testLineTerminator("\\\\n");'); | |
| 47 shouldBeFalse('testLineTerminator("\\r");'); | |
| 48 shouldBeFalse('testLineTerminator("\\\\r");'); | |
| 49 shouldBeFalse('testLineTerminator("\\u2028");'); | |
| 50 shouldBeFalse('testLineTerminator("\\\\u2028");'); | |
| 51 shouldBeFalse('testLineTerminator("\\u2029");'); | |
| 52 shouldBeFalse('testLineTerminator("\\\\u2029");'); | |
| 53 | |
| 54 shouldBe("RegExp('[/]').source", "'[/]'"); | |
| 55 shouldBe("RegExp('\\\\[/]').source", "'\\\\[\\\\/]'"); | |
| 56 | |
| 57 // See 15.10.6.4 | |
| 58 // The first half of this checks that: | |
| 59 // Return the String value formed by concatenating the Strings "/", the | |
| 60 // String value of the source property of this RegExp object, and "/"; | |
| 61 // The second half checks that: | |
| 62 // The returned String has the form of a RegularExpressionLiteral that | |
| 63 // evaluates to another RegExp object with the same behaviour as this object
. | |
| 64 shouldBe("var o = new RegExp(); o.toString() === '/'+o.source+'/' && eval(o.toSt
ring()+'.exec(String())')", '[""]'); | |
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