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[rbdr/forum] / src / lib / components / language_selector / language_selector.test.ts

/**
 * @jest-environment jsdom
 */

import '@testing-library/jest-dom/extend-expect';

import { locale } from 'svelte-i18n';
import { act, render } from '@testing-library/svelte';
import userEvent from '@testing-library/user-event';
import '$lib/i18n';

import LanguageSelector from './language_selector.svelte';

const internals = {
	results: null
};

describe('Language Selector component', () => {
	beforeEach(() => {
		internals.results = render(LanguageSelector);
	});

	test('Should display languages in their own language', () => {
		expect(internals.results.getByText('English')).toBeVisible();
		expect(internals.results.getByText('Español')).toBeVisible();
	});

	test('Should change locale when a language is selected', async () => {
		locale.subscribe((localeValue) => {
			expect(localeValue).toBe('en');
		})();
		const spanish = internals.results.getByText('Español');
		await userEvent.selectOptions(spanish.closest('select'), spanish);
		await act();
		locale.subscribe((localeValue) => {
			expect(localeValue).toBe('es');
		})();
	});
});