cesnimda
97 lines
4.8 KiB
TypeScript
97 lines
4.8 KiB
TypeScript
import React from "react";
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import "@testing-library/jest-dom";
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import { act, fireEvent, render, screen, waitFor, within } from "@testing-library/react";
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import { api } from "./api";
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import { I18nProvider, useI18n } from "./i18n/I18nProvider";
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import { ToastProvider } from "./toast";
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function Probe() {
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const { language, setLanguage, hydrateLanguage, t } = useI18n();
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return (
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<div>
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<output aria-label="language">{language}</output>
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<output aria-label="settings-label">{t("settings")}</output>
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<button onClick={() => setLanguage("en")}>English</button>
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<button onClick={() => setLanguage("nb")}>Norsk</button>
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<button onClick={() => hydrateLanguage("nb-NO")}>Restore server preference</button>
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</div>
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);
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}
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beforeEach(() => {
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jest.clearAllMocks();
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window.localStorage.clear();
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});
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test("migrates the legacy Norwegian code and persists Bokmål using nb-NO", async () => {
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window.localStorage.setItem("uiLanguage", "no");
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render(<I18nProvider><Probe /></I18nProvider>);
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expect(screen.getByLabelText("language")).toHaveTextContent("nb");
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expect(screen.getByLabelText("settings-label")).toHaveTextContent("Innstillinger");
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expect(document.documentElement.lang).toBe("nb-NO");
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fireEvent.click(screen.getByRole("button", { name: "English" }));
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expect(screen.getByLabelText("settings-label")).toHaveTextContent("Settings");
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await waitFor(() => expect(api.put).toHaveBeenCalledWith("/auth/preferences/language", { language: "en" }));
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});
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test("hydrates an authenticated server preference without writing it back", () => {
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render(<I18nProvider><Probe /></I18nProvider>);
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fireEvent.click(screen.getByRole("button", { name: /Restore server preference/i }));
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expect(screen.getByLabelText("language")).toHaveTextContent("nb");
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expect(window.localStorage.getItem("uiLanguage")).toBe("nb");
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expect(api.put).not.toHaveBeenCalled();
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});
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test.each([
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["Norsk", "nb", "nb-NO", "Språket er endret på denne enheten, men kunne ikke lagres på kontoen din.", "Prøv igjen"],
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["English", "en", "en", "The language changed on this device, but your account preference could not be saved.", "Retry"],
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])("a failed account language save keeps the local choice and offers a localized retry: %s", async (button, local, remote, message, retry) => {
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(api.put as jest.Mock).mockRejectedValueOnce({ response: { status: 500, data: "Internal database detail" } });
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render(<ToastProvider><I18nProvider><Probe /></I18nProvider></ToastProvider>);
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fireEvent.click(screen.getByRole("button", { name: button }));
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expect(screen.getByLabelText("language")).toHaveTextContent(local);
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expect(window.localStorage.getItem("uiLanguage")).toBe(local);
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expect(document.documentElement.lang).toBe(remote);
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const alert = await screen.findByRole("alert");
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expect(alert).toHaveTextContent(message);
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expect(alert).not.toHaveTextContent("Internal database detail");
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expect(api.put).toHaveBeenCalledTimes(1);
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expect(api.put).toHaveBeenLastCalledWith("/auth/preferences/language", { language: remote });
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fireEvent.click(within(alert).getByRole("button", { name: retry }));
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await waitFor(() => expect(api.put).toHaveBeenCalledTimes(2));
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expect(api.put).toHaveBeenLastCalledWith("/auth/preferences/language", { language: remote });
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await waitFor(() => expect(screen.queryByRole("alert")).not.toBeInTheDocument());
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expect(screen.getByLabelText("language")).toHaveTextContent(local);
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});
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test("a delayed language-save failure cannot offer a retry for a newer successful choice", async () => {
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let rejectOld!: (error: Error) => void;
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(api.put as jest.Mock).mockImplementationOnce(() => new Promise((_, reject) => { rejectOld = reject; }));
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render(<ToastProvider><I18nProvider><Probe /></I18nProvider></ToastProvider>);
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fireEvent.click(screen.getByRole("button", { name: "Norsk" }));
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fireEvent.click(screen.getByRole("button", { name: "English" }));
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await act(async () => { rejectOld(new Error("offline")); });
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expect(screen.queryByRole("alert")).not.toBeInTheDocument();
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expect(screen.getByLabelText("language")).toHaveTextContent("en");
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expect(api.put).toHaveBeenCalledTimes(2);
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});
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test("a previously delivered language retry cannot reverse a newer choice", async () => {
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(api.put as jest.Mock).mockRejectedValueOnce(new Error("offline"));
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render(<ToastProvider><I18nProvider><Probe /></I18nProvider></ToastProvider>);
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fireEvent.click(screen.getByRole("button", { name: "Norsk" }));
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const alert = await screen.findByRole("alert");
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const retry = within(alert).getByRole("button", { name: "Prøv igjen" });
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fireEvent.click(screen.getByRole("button", { name: "English" }));
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fireEvent.click(retry);
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expect(screen.getByLabelText("language")).toHaveTextContent("en");
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expect(window.localStorage.getItem("uiLanguage")).toBe("en");
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expect(api.put).toHaveBeenCalledTimes(2);
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});
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