add e2e test

.gitignore

@@ -12,14 +12,4 @@ node_modules
 dist
 dist-ssr
 *.local
-
-# Editor directories and files
-.vscode/*
-!.vscode/extensions.json
-.idea
-.DS_Store
-*.suo
-*.ntvs*
-*.njsproj
-*.sln
-*.sw?
+test-results/

examples/index.test.tsx

@@ -0,0 +1,16 @@
+import { test, expect } from "@playwright/test";
+
+test("basic", async ({ page }) => {
+  await page.goto("/");
+
+  const button = page.locator("button");
+  const display = page.locator("h1");
+
+  await button.click();
+
+  await expect(await display.textContent()).toBe("1");
+
+  await button.click();
+
+  await expect(await display.textContent()).toBe("2");
+});