test.js

import { expect } from '@playwright/test';
import { start_server, test } from '../../../utils.js';

/** @typedef {import('@playwright/test').Response} Response */

test.describe.configure({ mode: 'parallel' });

test.describe('base path', () => {
	test('serves a useful 404 when visiting unprefixed path', async ({ request }) => {
		const response = await request.get('/slash/', { headers: { Accept: 'text/html' } });
		expect(response.status()).toBe(404);
		expect(await response.text()).toBe(
			'The server is configured with a public base URL of /path-base - did you mean to visit <a href="/path-base/slash/">/path-base/slash/</a> instead?'
		);
	});

	test('serves /', async ({ page, javaScriptEnabled }) => {
		await page.goto('/path-base/');

		expect(await page.textContent('h1')).toBe('I am in the template');
		expect(await page.textContent('h2')).toBe("We're on index.svelte");

		const mode = process.env.DEV ? 'dev' : 'prod';
		expect(await page.textContent('p')).toBe(
			`Hello from the ${javaScriptEnabled ? 'client' : 'server'} in ${mode} mode!`
		);
	});

	test('sets_paths', async ({ page }) => {
		await page.goto('/path-base/base/');
		expect(await page.textContent('[data-source="base"]')).toBe('/path-base');
		expect(await page.textContent('[data-source="assets"]')).toBe('/_svelte_kit_assets');
	});

	test('loads javascript', async ({ page, javaScriptEnabled }) => {
		await page.goto('/path-base/base/');
		expect(await page.textContent('button')).toBe('clicks: 0');

		if (javaScriptEnabled) {
			await page.click('button');
			expect(await page.innerHTML('h2')).toBe('button has been clicked 1 time');
		}
	});

	test('loads CSS', async ({ page }) => {
		await page.goto('/path-base/base/');
		expect(
			await page.evaluate(() => {
				const el = document.querySelector('p');
				return el && getComputedStyle(el).color;
			})
		).toBe('rgb(255, 0, 0)');
	});

	test('inlines CSS', async ({ page, javaScriptEnabled }) => {
		await page.goto('/path-base/base/');
		if (process.env.DEV) {
			const ssr_style = await page.evaluate(() => document.querySelector('style[data-sveltekit]'));

			if (javaScriptEnabled) {
				// <style data-sveltekit> is removed upon hydration
				expect(ssr_style).toBeNull();
			} else {
				expect(ssr_style).not.toBeNull();
			}

			expect(
				await page.evaluate(() => document.querySelector('link[rel="stylesheet"]'))
			).toBeNull();
		} else {
			expect(await page.evaluate(() => document.querySelector('style'))).not.toBeNull();
			expect(
				await page.evaluate(() => document.querySelector('link[rel="stylesheet"][disabled]'))
			).not.toBeNull();
			expect(
				await page.evaluate(() => document.querySelector('link[rel="stylesheet"]:not([disabled])'))
			).not.toBeNull();
		}
	});

	test('sets params correctly', async ({ page, clicknav }) => {
		await page.goto('/path-base/base/one');

		expect(await page.textContent('h2')).toBe('one');

		await clicknav('[href="/path-base/base/two"]');
		expect(await page.textContent('h2')).toBe('two');
	});
});

test.describe('CSP', () => {
	test('blocks script from external site', async ({ page }) => {
		const { port, close } = await start_server((req, res) => {
			if (req.url === '/blocked.js') {
				res.writeHead(200, {
					'content-type': 'text/javascript'
				});

				res.end('window.pwned = true');
			} else {
				res.writeHead(404).end('not found');
			}
		});

		await page.goto(`/path-base/csp?port=${port}`);

		expect(await page.evaluate('window.pwned')).toBe(undefined);

		await close();
	});
});

test.describe('Custom extensions', () => {
	test('works with arbitrary extensions', async ({ page }) => {
		await page.goto('/path-base/custom-extensions/');
		expect(await page.textContent('h2')).toBe('Great success!');
	});

	test('works with other arbitrary extensions', async ({ page }) => {
		await page.goto('/path-base/custom-extensions/const');
		expect(await page.textContent('h2')).toBe('Tremendous!');

		await page.goto('/path-base/custom-extensions/a');

		expect(await page.textContent('h2')).toBe('a');

		await page.goto('/path-base/custom-extensions/test-slug');

		expect(await page.textContent('h2')).toBe('TEST-SLUG');

		await page.goto('/path-base/custom-extensions/unsafe-replacement');

		expect(await page.textContent('h2')).toBe('Bazooom!');
	});
});

test.describe('env', () => {
	test('resolves downwards', async ({ page }) => {
		await page.goto('/path-base/env');
		expect(await page.textContent('p')).toBe('and thank you');
	});
});

test.describe('trailingSlash', () => {
	test('adds trailing slash', async ({ baseURL, page, clicknav }) => {
		await page.goto('/path-base/slash');

		expect(page.url()).toBe(`${baseURL}/path-base/slash/`);
		expect(await page.textContent('h2')).toBe('/slash/');

		await clicknav('[href="/path-base/slash/child"]');
		expect(page.url()).toBe(`${baseURL}/path-base/slash/child/`);
		expect(await page.textContent('h2')).toBe('/slash/child/');
	});

	test('ignores trailing slash on endpoint', async ({ baseURL, request }) => {
		const r1 = await request.get('/path-base/endpoint/');
		expect(r1.url()).toBe(`${baseURL}/path-base/endpoint/`);
		expect(await r1.text()).toBe('hi');

		const r2 = await request.get('/path-base/endpoint');
		expect(r2.url()).toBe(`${baseURL}/path-base/endpoint`);
		expect(await r2.text()).toBe('hi');
	});

	test('can fetch data from page-endpoint', async ({ request }) => {
		const r = await request.get('/path-base/page-endpoint/__data.json');
		const data = await r.json();

		expect(data).toEqual({
			type: 'data',
			nodes: [null, { type: 'data', data: [{ message: 1 }, 'hi'], uses: {} }]
		});
	});

	test('accounts for trailingSlash when prefetching', async ({ app, page, javaScriptEnabled }) => {
		if (!javaScriptEnabled) return;

		await page.goto('/path-base/prefetching');

		/** @type {string[]} */
		let requests = [];
		page.on('request', (r) => requests.push(new URL(r.url()).pathname));

		// also wait for network processing to complete, see
		// https://playwright.dev/docs/network#network-events
		await app.prefetch('/path-base/prefetching/prefetched');

		// svelte request made is environment dependent
		if (process.env.DEV) {
			expect(requests.filter((req) => req.endsWith('.svelte')).length).toBe(1);
		} else {
			expect(requests.filter((req) => req.endsWith('.js')).length).toBeGreaterThan(0);
		}

		expect(requests.includes(`/path-base/prefetching/prefetched/__data.json`)).toBe(true);

		requests = [];
		await app.goto('/path-base/prefetching/prefetched');
		expect(requests).toEqual([]);
	});
});

test.describe('serviceWorker', () => {
	if (process.env.DEV) return;

	test('does not register service worker if none created', async ({ page }) => {
		await page.goto('/path-base/');
		expect(await page.content()).not.toMatch('navigator.serviceWorker');
	});
});

test.describe('Vite options', () => {
	test('Respects --mode', async ({ page }) => {
		await page.goto('/path-base/mode');

		const mode = process.env.DEV ? 'development' : 'custom';
		expect(await page.textContent('h2')).toBe(`${mode} === ${mode} === ${mode}`);
	});
});