Component.perf-test.tsx

// counter.perf-test.tsx
test('Count increments on press', async () => {
  const scenario = async (screen: RenderAPI) => {
    const button = screen.getByText('Action');
    
    await screen.findByText('Count: 0’);
    fireEvent.press(button);
    fireEvent.press(button);
    await screen.findByText('Count: 2');
  };
 
  const stats = await measurePerformance(
    <Counter />, 
    { scenario, runs: 20 }
  );
  await writeTestStats(stats);
});