add test

tests/playwright-test/expect-poll.spec.ts

@@ -245,3 +245,16 @@ test('should propagate promise rejections', { annotation: { type: 'issue', descr
 
   expect(result.output).toContain('some error');
 });
+
+test('should propagate string exception from async arrow function', { annotation: { type: 'issue', description: 'https://github.com/microsoft/playwright/issues/32256' } }, async ({ runInlineTest }) => {
+  const result = await runInlineTest({
+    'a.spec.ts': `
+      import { test, expect } from '@playwright/test';
+      test('should fail', async () => {
+        await expect.poll(async () => { throw 'some error' }).toBe({ foo: 'baz' });
+      });
+    `
+  });
+
+  expect(result.output).toContain('some error');
+});