test: add electron test (#1840)

apps/electron/playwright.config.ts

@@ -0,0 +1,27 @@
+import type { PlaywrightTestConfig } from '@playwright/test';
+// import { devices } from '@playwright/test';
+
+/**
+ * Read environment variables from file.
+ * https://github.com/motdotla/dotenv
+ */
+// require('dotenv').config();
+
+/**
+ * See https://playwright.dev/docs/test-configuration.
+ */
+const config: PlaywrightTestConfig = {
+  testDir: './tests',
+  fullyParallel: true,
+  timeout: process.env.CI ? 50_000 : 30_000,
+  use: {
+    viewport: { width: 1440, height: 800 },
+  },
+};
+
+if (process.env.CI) {
+  config.retries = 3;
+  config.workers = '50%';
+}
+
+export default config;