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Duplicate named capture groups: Fix match arrays

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Each named capturing group should count as its own parenthesized capturing
group, even if it has the same name as another group. So, some of these
expectations were missing `undefined` array elements for the variant of
the `x` capturing group that didn't match.

In the other expectations, we forgot to take into account that the
backreference is not inside a capturing group, so the group match should
not have doubled letters in it.
This commit is contained in:
Philip Chimento 2022-10-28 16:09:08 -07:00 committed by Ms2ger
parent d77d9b2b85
commit fabb1fd379
1 changed files with 6 additions and 6 deletions

12
test/built-ins/RegExp/named-groups/duplicate-names.js

@ -8,15 +8,15 @@ features: [regexp-duplicate-named-groups]
includes: [compareArray.js]
---*/
assert.compareArray(["b", "b"], "bab".match(/(?<x>a)|(?<x>b)/));
assert.compareArray(["b", "b"], "bab".match(/(?<x>b)|(?<x>a)/));
assert.compareArray(["b", undefined, "b"], "bab".match(/(?<x>a)|(?<x>b)/));
assert.compareArray(["b", "b", undefined], "bab".match(/(?<x>b)|(?<x>a)/));
assert.compareArray(["aa", "aa", undefined], "aa".match(/(?:(?<x>a)|(?<x>b))\k<x>/));
assert.compareArray(["bb", undefined, "bb"], "bb".match(/(?:(?<x>a)|(?<x>b))\k<x>/));
assert.compareArray(["aa", "a", undefined], "aa".match(/(?:(?<x>a)|(?<x>b))\k<x>/));
assert.compareArray(["bb", undefined, "b"], "bb".match(/(?:(?<x>a)|(?<x>b))\k<x>/));
let matchResult = "aabb".match(/(?:(?:(?<x>a)|(?<x>b))\k<x>){2}/);
assert.compareArray(["aabb", undefined, "bb"], matchResult);
assert.sameValue(matchResult.groups.x, "bb");
assert.compareArray(["aabb", undefined, "b"], matchResult);
assert.sameValue(matchResult.groups.x, "b");
let notMatched = "abab".match(/(?:(?:(?<x>a)|(?<x>b))\k<x>){2}/);
assert.sameValue(notMatched, null);