[Feature] SvelteKit adapter for Desktop Apps with Electron

test/test.js

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+import fs from 'fs';
+import * as assert from 'uvu/assert';
+import { run } from './utils.js';
+
+run('prerendered', (test) => {
+	test('generates HTML files', ({ cwd }) => {
+		assert.ok(fs.existsSync(`${cwd}/build/index.html`));
+	});
+
+	test('prerenders a page', async ({ base, page }) => {
+		await page.goto(base);
+		assert.equal(await page.textContent('h1'), 'This page was prerendered');
+		assert.equal(await page.textContent('p'), 'answer: 42');
+	});
+
+	test('prerenders an unreferenced endpoint with explicit `prerender` setting', async ({ cwd }) => {
+		assert.ok(fs.existsSync(`${cwd}/build/endpoint/explicit.json`));
+	});
+
+	test('prerenders a referenced endpoint with implicit `prerender` setting', async ({ cwd }) => {
+		assert.ok(fs.existsSync(`${cwd}/build/endpoint/implicit.json`));
+	});
+});
+
+run('spa', (test) => {
+	test('generates a fallback page', async ({ base, cwd, page }) => {
+		assert.ok(fs.existsSync(`${cwd}/build/200.html`));
+
+		await page.goto(`${base}/fallback/a/b/c`);
+		assert.equal(await page.textContent('h1'), 'the fallback page was rendered');
+	});
+
+	test('does not prerender pages without prerender=true', ({ cwd }) => {
+		assert.ok(!fs.existsSync(`${cwd}/build/index.html`));
+	});
+
+	test('prerenders page with prerender=true', ({ cwd }) => {
+		assert.ok(fs.existsSync(`${cwd}/build/about.html`));
+	});
+
+	test('renders content in fallback page when JS runs', async ({ base, page }) => {
+		await page.goto(base);
+		assert.equal(await page.textContent('h1'), 'This page was not prerendered');
+	});
+
+	test('renders error page for missing page', async ({ base, page }) => {
+		await page.goto(`${base}/nosuchpage`);
+		assert.equal(await page.textContent('h1'), '404');
+	});
+});