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page-builder/tests/unit/LocaleSwitcher.spec.tsx
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i18n 적용
2025-12-10 15:56:51 +09:00

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TypeScript

import { describe, it, expect, afterEach } from "vitest";
import { render, screen, fireEvent, cleanup } from "@testing-library/react";
import { LocaleProvider, useAppLocale } from "@/features/i18n/LocaleProvider";
import { LocaleSwitcher } from "@/features/i18n/LocaleSwitcher";
// LocaleSwitcher TDD
// - 현재 로케일에 따라 EN/KO 버튼 텍스트가 표시되어야 한다.
// - 버튼을 클릭하면 로케일이 토글되고, 하위 컴포넌트의 useAppLocale 결과도 함께 변경되어야 한다.
describe("LocaleSwitcher", () => {
afterEach(() => {
cleanup();
});
function LocaleConsumer() {
const locale = useAppLocale();
return <div data-testid="current-locale">{locale}</div>;
}
it("초기 로케일이 en 이면 버튼 텍스트는 EN 이어야 한다", () => {
render(
<LocaleProvider initialLocale="en">
<LocaleSwitcher />
<LocaleConsumer />
</LocaleProvider>,
);
const button = screen.getByRole("button", { name: "Toggle locale" });
const current = screen.getByTestId("current-locale");
expect(button.textContent).toContain("EN");
expect(current.textContent).toBe("en");
});
it("버튼을 클릭하면 로케일이 en/ko 사이에서 토글되어야 한다", () => {
render(
<LocaleProvider initialLocale="en">
<LocaleSwitcher />
<LocaleConsumer />
</LocaleProvider>,
);
const button = screen.getByRole("button", { name: "Toggle locale" });
const current = screen.getByTestId("current-locale");
expect(current.textContent).toBe("en");
expect(button.textContent).toContain("EN");
fireEvent.click(button);
expect(current.textContent).toBe("ko");
expect(button.textContent).toContain("KO");
});
});