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LibJS: Implement RegExp.prototype [ @@split ]

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Timothy Flynn 2021-07-09 09:57:07 -04:00 • committed by Linus Groh
parent 43918b0104
commit e4124d0218
3 changed files with 155 additions and 0 deletions
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32
Userland/Libraries/LibJS/Tests/builtins/String/String.prototype.split.js
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@ -33,3 +33,35 @@ test("limits", () => {
expect("a b c d".split(" ", 3)).toEqual(["a", "b", "c"]);
expect("a b c d".split(" ", 100)).toEqual(["a", "b", "c", "d"]);
});
test("regex split", () => {
class RegExp1 extends RegExp {
[Symbol.split](str, limit) {
const result = RegExp.prototype[Symbol.split].call(this, str, limit);
return result.map(x => `(${x})`);
}
}
expect("2016-01-02".split(new RegExp1("-"))).toEqual(["(2016)", "(01)", "(02)"]);
expect("2016-01-02".split(new RegExp("-"))).toEqual(["2016", "01", "02"]);
expect(/a*?/[Symbol.split]("ab")).toEqual(["a", "b"]);
expect(/a*/[Symbol.split]("ab")).toEqual(["", "b"]);
let captureResult = /<(\/)?([^<>]+)>/[Symbol.split]("A<B>bold</B>and<CODE>coded</CODE>");
expect(captureResult).toEqual([
"A",
undefined,
"B",
"bold",
"/",
"B",
"and",
undefined,
"CODE",
"coded",
"/",
"CODE",
"",
]);
});