✅(tests) Add & adapt language tests

- Language will only be changed if different from current language
- Added test for custom translations

Signed-off-by: Robin Weber <[email protected]>

Author: rvveber

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

@@ -173,6 +173,36 @@ test.describe('Config', () => {
         .first(),
     ).toBeAttached();
   });
+
+  test('it checks theme_customization.translations config', async ({
+    page,
+  }) => {
+    await page.route('**/api/v1.0/config/', async (route) => {
+      const request = route.request();
+      if (request.method().includes('GET')) {
+        await route.fulfill({
+          json: {
+            ...CONFIG,
+            theme_customization: {
+              translations: {
+                en: {
+                  translation: {
+                    Docs: 'MyCustomDocs',
+                  },
+                },
+              },
+            },
+          },
+        });
+      } else {
+        await route.continue();
+      }
+    });
+
+    await page.goto('/');
+
+    await expect(page.getByText('MyCustomDocs')).toBeAttached();
+  });
 });
 
 test.describe('Config: Not loggued', () => {

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

@@ -128,8 +128,16 @@ export async function waitForLanguageSwitch(
   lang: TestLanguageValue,
 ) {
   const header = page.locator('header').first();
-  await header.getByRole('button', { name: 'arrow_drop_down' }).click();
+  const languagePicker = header.locator('.--docs--language-picker-text');
+  const isAlreadyTargetLanguage = await languagePicker
+    .innerText()
+    .then((text) => text.toLowerCase().includes(lang.label.toLowerCase()));
 
+  if (isAlreadyTargetLanguage) {
+    return;
+  }
+
+  await languagePicker.click();
   const responsePromise = page.waitForResponse(
     (resp) =>
       resp.url().includes('/user') && resp.request().method() === 'PATCH',