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LibJS: Implement String.prototype.includes with UTF-16 code units

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This also implements String.prototype.includes more closely to the spec
(such as returning false when the search string is a RegExp object).
This commit is contained in:
Timothy Flynn 2021-07-19 12:46:35 -04:00 • committed by Andreas Kling
parent a05ce330b8
commit 70f9c7e1c7
2 changed files with 52 additions and 12 deletions
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8
Userland/Libraries/LibJS/Tests/builtins/String/String.prototype.includes.js
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@ -10,3 +10,11 @@ test("basic functionality", () => {
expect("hello 10 friends".includes(10)).toBeTrue();
expect("hello friends undefined".includes()).toBeTrue();
});
test("UTF-16", () => {
var s = "😀";
expect(s.includes("😀")).toBeTrue();
expect(s.includes("\ud83d")).toBeTrue();
expect(s.includes("\ude00")).toBeTrue();
expect(s.includes("a")).toBeFalse();
});