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LibJS: Implement Intl.RelativeTimeFormat.prototype.resolvedOptions

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Timothy Flynn 2022-01-25 12:20:44 -05:00 committed by Linus Groh
parent b50880f28c
commit 0c630d5687
3 changed files with 109 additions and 0 deletions

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describe("correct behavior", () => {
test("length is 0", () => {
expect(Intl.RelativeTimeFormat.prototype.resolvedOptions).toHaveLength(0);
});
test("locale only contains relevant extension keys", () => {
const en1 = new Intl.RelativeTimeFormat("en-u-ca-islamicc");
expect(en1.resolvedOptions().locale).toBe("en");
const en2 = new Intl.RelativeTimeFormat("en-u-nu-latn");
expect(en2.resolvedOptions().locale).toBe("en-u-nu-latn");
const en3 = new Intl.RelativeTimeFormat("en-u-ca-islamicc-nu-latn");
expect(en3.resolvedOptions().locale).toBe("en-u-nu-latn");
});
test("numberingSystem may be set by option", () => {
const en = new Intl.RelativeTimeFormat("en", { numberingSystem: "latn" });
expect(en.resolvedOptions().numberingSystem).toBe("latn");
const el = new Intl.RelativeTimeFormat("el", { numberingSystem: "latn" });
expect(el.resolvedOptions().numberingSystem).toBe("latn");
});
test("numberingSystem may be set by locale extension", () => {
const en = new Intl.RelativeTimeFormat("en-u-nu-latn");
expect(en.resolvedOptions().numberingSystem).toBe("latn");
const el = new Intl.RelativeTimeFormat("el-u-nu-latn");
expect(el.resolvedOptions().numberingSystem).toBe("latn");
});
test("numberingSystem option overrides locale extension", () => {
const el = new Intl.RelativeTimeFormat("el-u-nu-latn", { numberingSystem: "grek" });
expect(el.resolvedOptions().numberingSystem).toBe("grek");
});
test("numberingSystem option limited to known 'nu' values", () => {
["latn", "arab"].forEach(numberingSystem => {
const en = new Intl.RelativeTimeFormat("en", { numberingSystem: numberingSystem });
expect(en.resolvedOptions().numberingSystem).toBe("latn");
});
["latn", "arab"].forEach(numberingSystem => {
const en = new Intl.RelativeTimeFormat(`en-u-nu-${numberingSystem}`);
expect(en.resolvedOptions().numberingSystem).toBe("latn");
});
["latn", "grek"].forEach(numberingSystem => {
const el = new Intl.RelativeTimeFormat("el", { numberingSystem: numberingSystem });
expect(el.resolvedOptions().numberingSystem).toBe(numberingSystem);
});
["latn", "grek"].forEach(numberingSystem => {
const el = new Intl.RelativeTimeFormat(`el-u-nu-${numberingSystem}`);
expect(el.resolvedOptions().numberingSystem).toBe(numberingSystem);
});
});
test("style", () => {
const en1 = new Intl.RelativeTimeFormat("en");
expect(en1.resolvedOptions().style).toBe("long");
["long", "short", "narrow"].forEach(style => {
const en2 = new Intl.RelativeTimeFormat("en", { style: style });
expect(en2.resolvedOptions().style).toBe(style);
});
});
test("numeric", () => {
const en1 = new Intl.RelativeTimeFormat("en");
expect(en1.resolvedOptions().numeric).toBe("always");
["always", "auto"].forEach(numeric => {
const en2 = new Intl.RelativeTimeFormat("en", { numeric: numeric });
expect(en2.resolvedOptions().numeric).toBe(numeric);
});
});
});