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Diffstat (limited to 'js/src/tests/test262/built-ins/RegExp/named-groups/unicode-references.js')
-rw-r--r-- | js/src/tests/test262/built-ins/RegExp/named-groups/unicode-references.js | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/RegExp/named-groups/unicode-references.js b/js/src/tests/test262/built-ins/RegExp/named-groups/unicode-references.js new file mode 100644 index 0000000000..30d70ad112 --- /dev/null +++ b/js/src/tests/test262/built-ins/RegExp/named-groups/unicode-references.js @@ -0,0 +1,49 @@ +// Copyright 2017 the V8 project authors. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. + +/*--- +description: Named backreferences in Unicode RegExps +esid: sec-atomescape +info: | + The production AtomEscape :: [+N] k GroupName evaluates as follows: + + 1. Search the enclosing RegExp for an instance of a GroupSpecifier for an + RegExpIdentifierName which has a StringValue equal to the StringValue + of the RegExpIdentifierName contained in GroupName. + 2. Assert: A unique such GroupSpecifier is found. + 3. Let parenIndex be the number of left capturing parentheses in the entire + regular expression that occur to the left of the located GroupSpecifier. + This is the total number of times the Atom::(GroupSpecifierDisjunction) + production is expanded prior to that production's Term plus the total + number of Atom :: (GroupSpecifierDisjunction) productions enclosing this Term. + 4. Call BackreferenceMatcher(parenIndex) and return its Matcher result. +features: [regexp-named-groups] +includes: [compareArray.js] +---*/ + +// Named references. +assert.compareArray(["bab", "b"], "bab".match(/(?<b>.).\k<b>/u)); +assert.sameValue(null, "baa".match(/(?<b>.).\k<b>/u)); + +// Reference inside group. +assert.compareArray(["bab", "b"], "bab".match(/(?<a>\k<a>\w)../u)); +assert.sameValue("b", "bab".match(/(?<a>\k<a>\w)../u).groups.a); + +// Reference before group. +assert.compareArray(["bab", "b"], "bab".match(/\k<a>(?<a>b)\w\k<a>/u)); +assert.sameValue("b", "bab".match(/\k<a>(?<a>b)\w\k<a>/u).groups.a); +assert.compareArray(["bab", "b", "a"], "bab".match(/(?<b>b)\k<a>(?<a>a)\k<b>/u)); +let {a, b} = "bab".match(/(?<b>b)\k<a>(?<a>a)\k<b>/u).groups; +assert.sameValue(a, "a"); +assert.sameValue(b, "b"); + +assert.compareArray(["bab", "b"], "bab".match(/\k<a>(?<a>b)\w\k<a>/)); +assert.compareArray(["bab", "b", "a"], "bab".match(/(?<b>b)\k<a>(?<a>a)\k<b>/)); + +// Reference properties. +assert.sameValue("a", /(?<a>a)(?<b>b)\k<a>/u.exec("aba").groups.a); +assert.sameValue("b", /(?<a>a)(?<b>b)\k<a>/u.exec("aba").groups.b); +assert.sameValue(undefined, /(?<a>a)(?<b>b)\k<a>/u.exec("aba").groups.c); +assert.sameValue(undefined, /(?<a>a)(?<b>b)\k<a>|(?<c>c)/u.exec("aba").groups.c); + +reportCompare(0, 0); |