test: add electron test (#1840)

apps/electron/tests/basic.spec.ts

@@ -0,0 +1,22 @@
+import { resolve } from 'node:path';
+
+import { expect, test } from '@playwright/test';
+import { _electron as electron } from 'playwright';
+
+test('new page', async () => {
+  const electronApp = await electron.launch({
+    args: [resolve(__dirname, '..')],
+    executablePath: resolve(__dirname, '../node_modules/.bin/electron'),
+  });
+  const page = await electronApp.firstWindow();
+  await page.getByTestId('new-page-button').click({
+    delay: 100,
+  });
+  await page.waitForSelector('v-line');
+  const flavour = await page.evaluate(
+    // @ts-expect-error
+    () => globalThis.currentWorkspace.flavour
+  );
+  expect(flavour).toBe('local');
+  await electronApp.close();
+});