@tanosugi/better-auth-utils/dist/plugins/localization/getLang.test.js

Better Auth Utils

import { describe, expect, it } from "vitest";
import { getLang } from "./index";
const mockCtx = (acceptLanguage, referer) => ({
    acceptLanguage,
    referer,
});
describe("getLang", () => {
    it("enabledLocales: en, ja, Accept-Language: ja", () => {
        const ctx = mockCtx("ja");
        const options = {
            enabledLocales: ["en", "ja"],
        };
        expect(getLang(ctx, options)).toBe("ja");
    });
    it("enabledLocales: all, Accept-Language: en", () => {
        const ctx = mockCtx("en");
        const options = { enabledLocales: ["all"] };
        expect(getLang(ctx, options)).toBe("en");
    });
    it("no options, Accept-Language: ja", () => {
        const ctx = mockCtx("ja");
        expect(getLang(ctx, undefined)).toBe("ja");
    });
    it('i18nRouting: ["en", "ja"], url: /ja/hoge', () => {
        const ctx = mockCtx(undefined, "http://localhost/ja/hoge");
        const options = { i18nRouting: ["en", "ja"] };
        expect(getLang(ctx, options)).toBe("ja");
    });
    it("singleLang: en", () => {
        const ctx = mockCtx();
        const options = { singleLang: "en" };
        expect(getLang(ctx, options)).toBe("en");
    });
    it("Accept-Language: de, allowedLocales: en, ja", () => {
        const ctx = mockCtx("de");
        const options = {
            enabledLocales: ["en", "ja"],
        };
        expect(getLang(ctx, options)).toBeUndefined();
    });
    it("enabledLocales: fr, Accept-Language: fr", () => {
        const ctx = mockCtx("fr");
        const options = { enabledLocales: ["fr"] };
        expect(getLang(ctx, options)).toBe("fr");
    });
    it("enabledLocales: zh-CN, Accept-Language: zh-CN", () => {
        const ctx = mockCtx("zh-CN");
        const options = { enabledLocales: ["zh-CN"] };
        expect(getLang(ctx, options)).toBe("zh-CN");
    });
    it("enabledLocales: ko, Accept-Language: ko", () => {
        const ctx = mockCtx("ko");
        const options = { enabledLocales: ["ko"] };
        expect(getLang(ctx, options)).toBe("ko");
    });
    it("enabledLocales: zh-TW, Accept-Language: zh-TW,zh;q=0.9,en;q=0.8", () => {
        const ctx = mockCtx("zh-TW,zh;q=0.9,en;q=0.8");
        const options = { enabledLocales: ["zh-TW"] };
        expect(getLang(ctx, options)).toBe("zh-TW");
    });
    it("enabledLocales: zh-CN, Accept-Language: zh-CN;q=0.9,zh;q=0.8,en-US;q=0.7,en;q=0.6,zh-TW;q=0.5", () => {
        const ctx = mockCtx("zh-CN;q=0.9,zh;q=0.8,en-US;q=0.7,en;q=0.6,zh-TW;q=0.5");
        const options = { enabledLocales: ["zh-CN", "zh-TW"] };
        expect(getLang(ctx, options)).toBe("zh-CN");
    });
});