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LibJS: Implement get Intl.Collator.prototype.compare

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Idan Horowitz 2022-02-20 21:00:37 +02:00 • committed by Tim Flynn
parent 0bdb293262
commit 6558f4ae6b
5 changed files with 84 additions and 7 deletions
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41
Userland/Libraries/LibJS/Tests/builtins/Intl/Collator/Collator.prototype.compare.js Normal file
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describe("correct behavior", () => {
test("length is 2", () => {
expect(new Intl.Collator().compare).toHaveLength(2);
});
test("basic functionality", () => {
const collator = new Intl.Collator();
expect(collator.compare("", "")).toBe(0);
expect(collator.compare("a", "a")).toBe(0);
expect(collator.compare("6", "6")).toBe(0);
function compareBoth(a, b) {
const aTob = collator.compare(a, b);
const bToa = collator.compare(b, a);
expect(aTob > 0).toBeTrue();
expect(aTob).toBe(-bToa);
}
compareBoth("a", "");
compareBoth("1", "");
compareBoth("a", "A");
compareBoth("7", "3");
compareBoth("0000", "0");
expect(collator.compare("undefined")).toBe(0);
expect(collator.compare("undefined", undefined)).toBe(0);
expect(collator.compare("null", null)).toBe(0);
expect(collator.compare("null", undefined)).not.toBe(0);
expect(collator.compare("null") < 0).toBeTrue();
});
test("UTF-16", () => {
const collator = new Intl.Collator();
const string = "😀😀";
expect(collator.compare(string, "😀😀")).toBe(0);
expect(collator.compare(string, "\ud83d") > 0);
expect(collator.compare(string, "😀😀s") < 0);
});
});