> ## 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.

# Making Assertions

> Verify application state with AI-powered assertions

## Making Assertions

Use AI-powered assertions to verify application state:

```javascript theme={null}
// Verify visibility
await testdriver.assert('login page is displayed');
await testdriver.assert('submit button is visible');
await testdriver.assert('loading spinner is not visible');

// Verify content
await testdriver.assert('page title is "Welcome"');
await testdriver.assert('success message says "Account created"');
await testdriver.assert('error message contains "Invalid email"');

// Verify state
await testdriver.assert('checkbox is checked');
await testdriver.assert('dropdown shows "United States"');
await testdriver.assert('button is disabled');

// Verify visual appearance
await testdriver.assert('submit button is blue');
await testdriver.assert('form has red border');
```

<Info>Assertions are not cached and always re-evaluated to ensure accuracy.</Info>