> ## Documentation Index
> Fetch the complete documentation index at: https://docs.testdriver.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Self-Healing

> Perform actions and handle dynamic, async UI so tests adapt to change

Real apps move, load, and change. Adapt your tests to these conditions.

You [generated](/generating-tests) and [learned](/caching) your tests. Then you got them to [run](/copilot/running-tests). Now the challenge is the real world: buttons show after a spinner, pages navigate, animations play, and content comes in over the network. To keep the tests reliable, do the correct actions and control the timing. Then your tests adapt to the true behavior of the UI. They do not break.

## Performing Actions

TestDriver gives you many actions. You can [click](/click), [type](/type), [hover](/hover), and [scroll](/scroll). For a full list, read the [API Reference](/click).

```javascript theme={null}
// Clicking
await testdriver.find('submit button').click();
await testdriver.find('file item').doubleClick();
await testdriver.find('text area').rightClick();

// Typing
await testdriver.find('email input').type('user@example.com');
await testdriver.find('password input').type('secret', { secret: true });

// Keyboard shortcuts
await testdriver.pressKeys(['enter']);
await testdriver.pressKeys(['ctrl', 'c']);

// Hovering
await testdriver.find('dropdown menu').hover();

// Scrolling
await testdriver.scroll('down', 500);

// Waiting
await testdriver.wait(2000); // Wait 2 seconds for animation/state change

// Extracting information from screen
const price = await testdriver.extract('the total price');
const orderNumber = await testdriver.extract('the order confirmation number');
```

### Chaining Actions

TestDriver lets you chain methods for cleaner code:

```javascript theme={null}
// Chain find() with actions
const button = await testdriver.find('submit button').click();
```

Or keep the element reference for later use:

```javascript theme={null}
const button = await testdriver.find('submit button');
await button.click();
```

## Waiting for Dynamic Content

By default, `find()` polls automatically for a maximum of 10 seconds. It tries again each 5 seconds until it finds the element. Thus TestDriver finds most elements that show after short async operations. You do not need more configuration.

For longer operations, make the `timeout` larger:

```javascript theme={null}
// 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.

<Note>
  Redraw detection adds a small delay after each action but significantly reduces test flakiness.
</Note>

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

```javascript theme={null}
// 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:

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

Here is an example of customizing redraw detection:

```javascript theme={null}
// 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()`:

```javascript theme={null}
// 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);
```

<Note>
  For waiting for specific **elements** to appear, prefer `find()` with a `timeout` option. Use `wait()` only for simple time-based pauses.
</Note>

Once your tests can reliably act on a changing UI and [assert](/making-assertions) the results, the next step is figuring out what happened when something does go wrong.

<Card title="Next: Debug" icon="bug" href="/debugging-with-screenshots">
  Use screenshots and run output to see exactly what your test saw and pinpoint failures.
</Card>