✅(e2e) adapt tests to impress app

Adapt e2e test to works with Impress.

src/frontend/apps/e2e/__tests__/app-impress/header.spec.ts

@@ -0,0 +1,43 @@
+import { expect, test } from '@playwright/test';
+
+import { keyCloakSignIn } from './common';
+
+test.beforeEach(async ({ page, browserName }) => {
+  await page.goto('/');
+  await keyCloakSignIn(page, browserName);
+});
+
+test.describe('Header', () => {
+  test('checks all the elements are visible', async ({ page }) => {
+    const header = page.locator('header').first();
+
+    await expect(header.getByAltText('Marianne Logo')).toBeVisible();
+
+    await expect(
+      header.getByAltText('Freedom Equality Fraternity Logo'),
+    ).toBeVisible();
+
+    await expect(header.getByAltText('Impress Logo')).toBeVisible();
+    await expect(header.locator('h2').getByText('Impress')).toHaveCSS(
+      'color',
+      'rgb(0, 0, 145)',
+    );
+    await expect(header.locator('h2').getByText('Impress')).toHaveCSS(
+      'font-family',
+      /Marianne/i,
+    );
+
+    await expect(
+      header.getByText('Les applications de La Suite numérique'),
+    ).toBeVisible();
+
+    await expect(header.getByAltText('Language Icon')).toBeVisible();
+
+    await expect(header.getByText('John Doe')).toBeVisible();
+    await expect(
+      header.getByRole('img', {
+        name: 'profile picture',
+      }),
+    ).toBeVisible();
+  });
+});