implement e2e tests with PlayWright

frontend/.gitignore

@@ -19,3 +19,7 @@
 npm-debug.log*
 yarn-debug.log*
 yarn-error.log*
+/test-results/
+/playwright-report/
+/blob-report/
+/playwright/.cache/

frontend/package.json

@@ -52,6 +52,7 @@
   },
   "devDependencies": {
     "@babel/plugin-proposal-private-property-in-object": "7.21.0",
+    "@playwright/test": "^1.45.1",
     "@tanstack/eslint-plugin-query": "^5.49.0",
     "babel-plugin-module-resolver": "^5.0.2",
     "customize-cra": "^1.0.0",

frontend/playwright.config.ts

@@ -0,0 +1,78 @@
+import { defineConfig, devices } from '@playwright/test';
+
+/**
+ * Read environment variables from file.
+ * https://github.com/motdotla/dotenv
+ */
+// import dotenv from 'dotenv';
+// dotenv.config({ path: path.resolve(__dirname, '.env') });
+
+/**
+ * See https://playwright.dev/docs/test-configuration.
+ */
+export default defineConfig({
+  testDir: './tests',
+  /* Run tests in files in parallel */
+  fullyParallel: true,
+  /* Fail the build on CI if you accidentally left test.only in the source code. */
+  forbidOnly: !!process.env.CI,
+  /* Retry on CI only */
+  retries: process.env.CI ? 2 : 0,
+  /* Opt out of parallel tests on CI. */
+  workers: process.env.CI ? 1 : undefined,
+  /* Reporter to use. See https://playwright.dev/docs/test-reporters */
+  reporter: 'html',
+  /* Shared settings for all the projects below. See https://playwright.dev/docs/api/class-testoptions. */
+  use: {
+    /* Base URL to use in actions like `await page.goto('/')`. */
+    //baseURL: 'http://127.0.0.1:3000',
+
+    /* Collect trace when retrying the failed test. See https://playwright.dev/docs/trace-viewer */
+    trace: 'on-first-retry',
+  },
+
+  /* Configure projects for major browsers */
+  projects: [
+    {
+      name: 'chromium',
+      use: { ...devices['Desktop Chrome'] },
+    },
+
+    {
+      name: 'firefox',
+      use: { ...devices['Desktop Firefox'] },
+    },
+
+    {
+      name: 'webkit',
+      use: { ...devices['Desktop Safari'] },
+    },
+
+    /* Test against mobile viewports. */
+    // {
+    //   name: 'Mobile Chrome',
+    //   use: { ...devices['Pixel 5'] },
+    // },
+    // {
+    //   name: 'Mobile Safari',
+    //   use: { ...devices['iPhone 12'] },
+    // },
+
+    /* Test against branded browsers. */
+    // {
+    //   name: 'Microsoft Edge',
+    //   use: { ...devices['Desktop Edge'], channel: 'msedge' },
+    // },
+    // {
+    //   name: 'Google Chrome',
+    //   use: { ...devices['Desktop Chrome'], channel: 'chrome' },
+    // },
+  ],
+
+  /* Run your local dev server before starting the tests */
+  // webServer: {
+  //   command: 'npm run start',
+  //   url: 'http://127.0.0.1:3000',
+  //   reuseExistingServer: !process.env.CI,
+  // },
+});

frontend/tests/home.spec.ts

@@ -0,0 +1,44 @@
+import { test, expect } from '@playwright/test';
+
+test('has header', async ({ page }) => {
+  await page.goto('http://localhost:3000');
+
+  // The title should be visible
+  await expect(page).toHaveTitle(/Wookieepedia/);
+
+  // Both people and planets tabs should be visible
+  await expect(page.getByRole('tab', { name: '🤖 PEOPLE' })).toBeVisible();
+  await expect(page.getByRole('tab', { name: '🪐 PLANETS' })).toBeVisible();
+});
+
+
+test('people happy path', async ({ page }) => {
+  await page.goto('http://localhost:3000');
+
+  // Luke Skywalker should be visible
+  await expect(page.getByText('Luke Skywalker')).toBeVisible();
+  await expect(page.getByText('Gasgano')).not.toBeVisible();
+
+  const peopleSearchBar = page.getByPlaceholder('Search people...');
+  await peopleSearchBar.fill("gano");
+
+  // Gasgano should be visible while Luke Skywalker is not
+  await expect(page.getByText('Gasgano')).toBeVisible();
+  await expect(page.getByText('Luke Skywalker')).not.toBeVisible();
+});
+
+test('planets happy path', async ({ page }) => {
+  await page.goto('http://localhost:3000');
+
+  await page.getByRole('tab', { name: '🪐 PLANETS' }).click();
+
+  await expect(page.getByText('Tatooine')).toBeVisible();
+  await expect(page.getByText('Felucia')).not.toBeVisible();
+
+  const planetsSearchBar = page.getByPlaceholder('Search planets...');
+  await planetsSearchBar.fill("fe");
+
+  // Expect Felucia to be visible
+  await expect(page.getByText('Felucia')).toBeVisible();
+  await expect(page.getByText('Tatooine')).not.toBeVisible();
+});