Migrate from Cypress to Playwright

tests/helpers.ts

@@ -0,0 +1,33 @@
+import {BrowserContext} from '@playwright/test';
+import * as fs from 'fs';
+
+/**
+ * Blocks external tracking services (like Google Analytics and Google Tag Manager)
+ * to guarantee a hermetic and fast test environment.
+ */
+export async function blockTracking(context: BrowserContext): Promise<void> {
+  await context.route('**/*google-analytics.com/**', (route) => route.abort());
+  await context.route('**/*googletagmanager.com/**', (route) => route.abort());
+}
+
+/**
+ * Sets up interception for raw GEDCOM requests, fulfills them with cached test data
+ * and sets up CORS proxy checks and analytics blocking.
+ */
+export async function setupGedcomRoute(context: BrowserContext): Promise<void> {
+  const gedcomContent = fs.readFileSync(
+    'src/datasource/testdata/test.ged',
+    'utf-8',
+  );
+
+  await context.route('**/family.ged', async (route) => {
+    await route.fulfill({
+      status: 200,
+      contentType: 'text/plain',
+      headers: {'Access-Control-Allow-Origin': '*'},
+      body: gedcomContent,
+    });
+  });
+
+  await blockTracking(context);
+}