testdriver:waiting-for-elements

Waiting for Elements

By default, find() automatically polls for up to 10 seconds, retrying every 5 seconds until the element is found. This means most elements that appear after short async operations will be found without any extra configuration.

For longer operations, increase the timeout:

// Default behavior - polls for up to 10 seconds automatically
const element = await testdriver.find('Loading complete indicator');
await element.click();

// Wait up to 30 seconds for slower operations
const element = await testdriver.find('Loading complete indicator', { timeout: 30000 });
await element.click();

// Useful after actions that trigger loading states
await testdriver.find('submit button').click();
await testdriver.find('success message', { timeout: 15000 });

// Disable polling for instant checks
const toast = await testdriver.find('notification toast', { timeout: 0 });

Flake Prevention

TestDriver automatically waits for the screen and network to stabilize after each action using redraw detection. This prevents flaky tests caused by animations, loading states, or dynamic content updates.

For example, when clicking a submit button that navigates to a new page:

// Click submit - TestDriver automatically waits for the new page to load
await testdriver.find('submit button').click();

// By the time this runs, the page has fully loaded and stabilized
await testdriver.assert('dashboard is displayed');
await testdriver.find('welcome message');

Without redraw detection, you'd need manual waits or retries to handle the page transition. TestDriver handles this automatically by detecting when the screen stops changing and network requests complete.

You can disable redraw detection or customize its behavior:

// Disable redraw detection for faster tests (less reliable)
const testdriver = TestDriver(context, {
  redraw: false
});

Here is an example of customizing redraw detection:

// Fine-tune redraw detection
const testdriver = TestDriver(context, {
  redraw: {
    enabled: true,
    diffThreshold: 0.1,      // Pixel difference threshold (0-1)
    screenRedraw: true,      // Monitor screen changes
    networkMonitor: true,    // Wait for network idle
  }
});

Simple Delays with wait()

For simple pauses — waiting for animations, transitions, or state changes after an action — use wait():

// Wait for an animation to complete
await testdriver.find('menu toggle').click();
await testdriver.wait(2000);

// Wait for a page transition to settle
await testdriver.find('next page button').click();
await testdriver.wait(1000);