.gitignore

@@ -20,5 +20,12 @@ Thumbs.db
 vite.config.js.timestamp-*
 vite.config.ts.timestamp-*
 
+# Playwright
+/test-results/
+/playwright-report/
+/blob-report/
+/playwright/.cache/
+/playwright/.auth
+
 uploads
 .direnv

package-lock.json

@@ -12,6 +12,7 @@
 				"uuid": "^10.0.0"
 			},
 			"devDependencies": {
+				"@playwright/test": "^1.46.1",
 				"@sveltejs/adapter-auto": "^3.0.0",
 				"@sveltejs/adapter-node": "^5.2.0",
 				"@sveltejs/kit": "^2.0.0",
@@ -734,6 +735,22 @@
 				"node": ">=14"
 			}
 		},
+		"node_modules/@playwright/test": {
+			"version": "1.46.1",
+			"resolved": "https://registry.npmjs.org/@playwright/test/-/test-1.46.1.tgz",
+			"integrity": "sha512-Fq6SwLujA/DOIvNC2EL/SojJnkKf/rAwJ//APpJJHRyMi1PdKrY3Az+4XNQ51N4RTbItbIByQ0jgd1tayq1aeA==",
+			"dev": true,
+			"license": "Apache-2.0",
+			"dependencies": {
+				"playwright": "1.46.1"
+			},
+			"bin": {
+				"playwright": "cli.js"
+			},
+			"engines": {
+				"node": ">=18"
+			}
+		},
 		"node_modules/@polka/url": {
 			"version": "1.0.0-next.25",
 			"resolved": "https://registry.npmjs.org/@polka/url/-/url-1.0.0-next.25.tgz",
@@ -3643,6 +3660,53 @@
 				"url": "https://github.com/sponsors/jonschlinkert"
 			}
 		},
+		"node_modules/playwright": {
+			"version": "1.46.1",
+			"resolved": "https://registry.npmjs.org/playwright/-/playwright-1.46.1.tgz",
+			"integrity": "sha512-oPcr1yqoXLCkgKtD5eNUPLiN40rYEM39odNpIb6VE6S7/15gJmA1NzVv6zJYusV0e7tzvkU/utBFNa/Kpxmwng==",
+			"dev": true,
+			"license": "Apache-2.0",
+			"dependencies": {
+				"playwright-core": "1.46.1"
+			},
+			"bin": {
+				"playwright": "cli.js"
+			},
+			"engines": {
+				"node": ">=18"
+			},
+			"optionalDependencies": {
+				"fsevents": "2.3.2"
+			}
+		},
+		"node_modules/playwright-core": {
+			"version": "1.46.1",
+			"resolved": "https://registry.npmjs.org/playwright-core/-/playwright-core-1.46.1.tgz",
+			"integrity": "sha512-h9LqIQaAv+CYvWzsZ+h3RsrqCStkBHlgo6/TJlFst3cOTlLghBQlJwPOZKQJTKNaD3QIB7aAVQ+gfWbN3NXB7A==",
+			"dev": true,
+			"license": "Apache-2.0",
+			"bin": {
+				"playwright-core": "cli.js"
+			},
+			"engines": {
+				"node": ">=18"
+			}
+		},
+		"node_modules/playwright/node_modules/fsevents": {
+			"version": "2.3.2",
+			"resolved": "https://registry.npmjs.org/fsevents/-/fsevents-2.3.2.tgz",
+			"integrity": "sha512-xiqMQR4xAeHTuB9uWm+fFRcIOgKBMiOBP+eXiyT7jsgVCq1bkVygt00oASowB7EdtpOHaaPgKt812P9ab+DDKA==",
+			"dev": true,
+			"hasInstallScript": true,
+			"license": "MIT",
+			"optional": true,
+			"os": [
+				"darwin"
+			],
+			"engines": {
+				"node": "^8.16.0 || ^10.6.0 || >=11.0.0"
+			}
+		},
 		"node_modules/postcss": {
 			"version": "8.4.41",
 			"resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.41.tgz",

package.json

@@ -6,13 +6,16 @@
 		"dev": "vite dev",
 		"build": "vite build",
 		"preview": "vite preview",
-		"test": "vitest",
+		"test": "npm run test:integration && npm run test:unit",
 		"check": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json",
 		"check:watch": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json --watch",
 		"lint": "prettier --check . && eslint .",
-		"format": "prettier --write ."
+		"format": "prettier --write .",
+		"test:integration": "playwright test",
+		"test:unit": "vitest"
 	},
 	"devDependencies": {
+		"@playwright/test": "^1.46.1",
 		"@sveltejs/adapter-auto": "^3.0.0",
 		"@sveltejs/adapter-node": "^5.2.0",
 		"@sveltejs/kit": "^2.0.0",

playwright.config.ts

@@ -0,0 +1,12 @@
+import type { PlaywrightTestConfig } from '@playwright/test';
+
+const config: PlaywrightTestConfig = {
+	webServer: {
+		command: 'npm run build && npm run preview',
+		port: 4173,
+	},
+	testDir: 'tests',
+	testMatch: /(.+\.)?(test|spec)\.[jt]s/,
+};
+
+export default config;

src/hooks.server.ts

@@ -1,9 +1,7 @@
-import { log, timedExecution } from '$lib';
+import { log, timedExecution, requestIdHeader } from '$lib';
 import { validate, v7 as uuidv7 } from 'uuid';
 import type { Handle } from '@sveltejs/kit';
 
-const requestIdHeader = 'x-request-id';
-
 export const handle: Handle = async ({ event, resolve }) => {
 	// use incoming requestId, if it is a valid uuid, else generate one
 	const reqIdFromRequest = event.request.headers.get(requestIdHeader);

src/lib/index.ts

@@ -29,6 +29,8 @@ if (!('STORAGE_PATH' in process.env)) {
 }
 export const storagePath: string = process.env.STORAGE_PATH ?? defaultPath;
 
+export const requestIdHeader = 'x-request-id';
+
 export default safePath;
 
 export async function timedExecution<T>(

tests/health.test.ts

@@ -0,0 +1,13 @@
+import { expect, test } from '@playwright/test';
+
+test('healthy test', async ({ playwright }) => {
+	const context = await playwright.request.newContext();
+	const response = await context.get('health');
+	await expect(response.status()).toBe(200);
+	await expect(response.headers()).toHaveProperty('healthy');
+	await expect(response.headers()['healthy']).toBe('true');
+
+	const body = await response.json();
+	await expect(body).toHaveProperty('status');
+	await expect(body['status']).toBe('OK');
+});

tests/page.test.ts

@@ -0,0 +1,10 @@
+import { expect, test } from '@playwright/test';
+
+test('contains header text', async ({ playwright }) => {
+	const context = await playwright.request.newContext();
+	const response = await context.get('');
+	await expect(response.status()).toBe(200);
+
+	const body = (await response.body()).toString();
+	await expect(body).toContain('Gabi und Hannes Fotochallenge');
+});

tests/requestid.test.ts

@@ -0,0 +1,37 @@
+import { expect, test } from '@playwright/test';
+import { validate, NIL } from 'uuid';
+import { requestIdHeader } from '$lib';
+
+test('response contains request-id header', async ({ playwright }) => {
+	const context = await playwright.request.newContext();
+	const response = await context.get('health');
+	const headers = response.headers();
+	await expect(headers).toHaveProperty(requestIdHeader);
+});
+
+test('request-id is valid uuid', async ({ playwright }) => {
+	const context = await playwright.request.newContext();
+	const response = await context.get('health');
+	const headers = response.headers();
+	const requestId = headers[requestIdHeader];
+	await expect(validate(requestId)).toBe(true);
+});
+
+test('reuse valid incoming uuid', async ({ playwright }) => {
+	const context = await playwright.request.newContext();
+
+	const response = await context.get('health', { headers: { [requestIdHeader]: NIL } });
+	const headers = response.headers();
+	const requestId = headers[requestIdHeader];
+	await expect(requestId).toBe(NIL);
+});
+
+test('ignore invalid incoming uuid', async ({ playwright }) => {
+	const invalid = '00000000-0000-0000-0000-00000000000z';
+	const context = await playwright.request.newContext();
+
+	const response = await context.get('health', { headers: { [requestIdHeader]: invalid } });
+	const headers = response.headers();
+	const requestId = headers[requestIdHeader];
+	await expect(requestId).not.toBe(invalid);
+});