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LibRegex: Make sure there are as many group matches as actual matches

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Fixes #6131.
This commit is contained in:
AnotherTest 2021-04-05 05:49:56 +04:30 • committed by Andreas Kling
parent 1bdc1cf77e
commit ade97d4094
2 changed files with 24 additions and 0 deletions
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18
Userland/Libraries/LibJS/Tests/builtins/RegExp/RegExp.prototype.exec.js
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@ -101,3 +101,21 @@ test("optionally seen capture group", () => {
expect(res[1]).toBe("mozilla");
expect(res[2]).toBeUndefined();
});
// #6131
test("capture group with two '?' qualifiers", () => {
let res = /()??/.exec("");
expect(res.length).toBe(2);
expect(res[0]).toBe("");
expect(res[1]).toBeUndefined();
});
test("named capture group with two '?' qualifiers", () => {
let res = /(?<foo>)??/.exec("");
expect(res.length).toBe(2);
expect(res[0]).toBe("");
expect(res[1]).toBeUndefined();
expect(res.groups.foo).toBeUndefined();
});