Yaowei Zheng
21 lines
780 B
TypeScript
21 lines
780 B
TypeScript
/**
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* locale.tsx unit tests: device language resolution (language follows
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* navigator.language when no stored preference exists; language/theme
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* initialization does not depend on login state and also applies on the
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* login page).
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*/
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import { describe, expect, it } from "vitest";
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import { resolveSystemLocale } from "../src/state/locale";
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describe("resolveSystemLocale (navigator.language → UI language)", () => {
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it("zh prefix (any case or region variant) → zh", () => {
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expect(resolveSystemLocale("zh-CN")).toBe("zh");
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expect(resolveSystemLocale("ZH-TW")).toBe("zh");
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});
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it("non-Chinese or unavailable → English fallback", () => {
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expect(resolveSystemLocale("en-US")).toBe("en");
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expect(resolveSystemLocale(undefined)).toBe("en");
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});
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});
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