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LibJS: Implement String.prototype.charCodeAt

It's broken for strings with characters outside 7-bit ASCII, but
it's broken in the same way as several existing functions (e.g.
charAt()), so that's probably ok for now.
This commit is contained in:
Nico Weber 2020-07-22 09:38:39 -04:00 committed by Andreas Kling
parent 7230b7aad7
commit 979e02c0a8
4 changed files with 40 additions and 0 deletions

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@ -1,6 +1,7 @@
test("basic functionality", () => {
const genericStringPrototypeFunctions = [
"charAt",
"charCodeAt",
"repeat",
"startsWith",
"indexOf",

View file

@ -0,0 +1,21 @@
test("basic functionality", () => {
expect(String.prototype.charAt).toHaveLength(1);
var s = "Foobar";
expect(typeof s).toBe("string");
expect(s).toHaveLength(6);
expect(s.charCodeAt(0)).toBe(70);
expect(s.charCodeAt(1)).toBe(111);
expect(s.charCodeAt(2)).toBe(111);
expect(s.charCodeAt(3)).toBe(98);
expect(s.charCodeAt(4)).toBe(97);
expect(s.charCodeAt(5)).toBe(114);
expect(s.charCodeAt(6)).toBe(NaN);
expect(s.charCodeAt(-1)).toBe(NaN);
expect(s.charCodeAt()).toBe(70);
expect(s.charCodeAt(NaN)).toBe(70);
expect(s.charCodeAt("foo")).toBe(70);
expect(s.charCodeAt(undefined)).toBe(70);
});