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View detailed TestDriver application logs including test execution steps, AI vision analysis results, cache hits/misses, and debugging information.

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Application Log Output

TestDriver logs every action and decision during test execution: 
Test Execution Logs:
┌────────────────────────────────────────────────────┐
│ [0:00] ℹ️ System info configured                  │
│ [0:00] ℹ️ Response cache: /Users/.../cache.json   │
│ [0:05] ✓ Connected to sandbox i-0abc123def        │
│ [0:08] ℹ️ Browser launched: Chrome 120.0          │
│ [0:12] ✓ Navigated to https://example.com         │
│ [0:15] 🔍 Finding: "login button"                 │
│ [0:18] ✓ Cache hit: login button (fe68cfe...)     │
│ [0:18] ✓ Element found at (512, 387)              │
│ [0:19] ✓ Clicked login button                     │
│ [0:22] 🔍 Finding: "email input"                  │
│ [0:25] ⚡ Cache miss: analyzing with AI vision     │
│ [0:28] ✓ Element found at (450, 290)              │
│ [0:28] ℹ️ Cached for future runs                  │
│ [0:29] ✓ Typed "[email protected]"                 │
│ [0:32] ✓ Response was successful!                 │
│ [0:35] ✓ Test completed: PASSED                   │
└────────────────────────────────────────────────────┘

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Log Levels

TestDriver uses standard log levels:

INFO

General information about test execution
  • Configuration loaded
  • Sandbox connection
  • Navigation events
  • Cache operations

SUCCESS

Successful operations
  • Element found
  • Action completed
  • Assertion passed
  • Test passed

WARNING

Non-critical issues
  • Slow operations
  • Retry attempts
  • Deprecated API usage
  • Cache near limit

ERROR

Failures and exceptions
  • Element not found
  • Timeout errors
  • Assertion failures
  • Test failures

DEBUG

Detailed debugging information
  • AI vision analysis details
  • Screenshot hashes
  • Cache key generation
  • Internal SDK operations

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AI Vision Analysis Logs

See how TestDriver finds elements: 
AI Vision Analysis:
┌────────────────────────────────────────────────────┐
│ [0:22] 🔍 Finding: "submit button in login form"  │
│ [0:23] ℹ️ Taking screenshot...                    │
│ [0:24] ℹ️ Screenshot hash: a8f3c21b4e9d7f...      │
│ [0:24] ℹ️ Cache lookup: MISS                      │
│ [0:25] ℹ️ Sending to AI vision model...           │
│ [0:26] ℹ️ AI analysis in progress...              │
│ [0:28] ✓ Element identified with 98.5% confidence │
│ [0:28] ✓ Bounding box: (450, 370, 124, 34)        │
│ [0:28] ✓ Coordinates: (512, 387)                  │
│ [0:28] ℹ️ Saving to cache (key: fe68cfe6...)     │
│ [0:29] ✓ Element found and ready for interaction  │
└────────────────────────────────────────────────────┘
Logged Information:
  • Screenshot capture timing
  • Cache lookup results
  • AI model inference time
  • Confidence scores
  • Element coordinates
  • Cache storage

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Cache Hit/Miss Tracking

Monitor cache performance in logs: 
Cache Performance Logs:
┌────────────────────────────────────────────────────┐
│ [0:15] ⚡ Cache HIT: "login button" (12ms)        │
│ [0:22] ⚡ Cache MISS: "email input" (analyzing...) │
│ [0:35] ⚡ Cache HIT: "password field" (8ms)       │
│ [0:42] ⚡ Cache HIT: "submit button" (10ms)       │
│                                                    │
│ Cache Summary:                                     │
│ • Hits: 3 (75%)                                   │
│ • Misses: 1 (25%)                                 │
│ • Time saved: ~6.2 seconds                        │
└────────────────────────────────────────────────────┘

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Test Step Logs

Detailed action execution: 
Action Execution:
┌────────────────────────────────────────────────────┐
│ [0:19] ➤ testdriver.find('login button')          │
│ [0:19] ℹ️ Locating element...                     │
│ [0:19] ✓ Found at (512, 387)                      │
│                                                    │
│ [0:19] ➤ .click()                                 │
│ [0:19] ℹ️ Moving mouse to (512, 387)              │
│ [0:20] ℹ️ Mouse button down                       │
│ [0:20] ℹ️ Mouse button up                         │
│ [0:20] ✓ Click completed                          │
│                                                    │
│ [0:22] ➤ testdriver.find('email input')           │
│ [0:25] ✓ Found at (450, 290)                      │
│                                                    │
│ [0:25] ➤ .type('[email protected]')                │
│ [0:26] ℹ️ Typing: u                               │
│ [0:26] ℹ️ Typing: s                               │
│ [0:27] ℹ️ Typing: e                               │
│ [0:27] ℹ️ Typing: r                               │
│ ... (truncated for brevity)                        │
│ [0:29] ✓ Typed 17 characters                      │
└────────────────────────────────────────────────────┘

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Assertion Logs

Track test assertions: 
Assertions:
┌────────────────────────────────────────────────────┐
│ [0:32] ➤ testdriver.assert('login successful')    │
│ [0:32] ℹ️ Taking screenshot for assertion...      │
│ [0:33] ℹ️ Sending to AI for verification...       │
│ [0:35] ✓ Assertion passed with 96.2% confidence   │
│ [0:35] ℹ️ Evidence: "Welcome, User" text visible  │
│                                                    │
│ [0:40] ➤ testdriver.assert('error message shows') │
│ [0:41] ℹ️ Taking screenshot for assertion...      │
│ [0:42] ℹ️ Sending to AI for verification...       │
│ [0:44] ✗ Assertion failed                         │
│ [0:44] ℹ️ Reason: No error message found          │
│ [0:44] ℹ️ Screenshot saved for debugging          │
└────────────────────────────────────────────────────┘

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Error and Stack Traces

Detailed error information: 
Error Details:
┌────────────────────────────────────────────────────┐
│ [0:44] ✗ AssertionError: Element not found        │
│                                                    │
│ Expected: "error message"                          │
│ Context: Login form after submission               │
│ Timeout: 30000ms                                   │
│                                                    │
│ Stack Trace:                                       │
│   at TestDriver.assert (sdk.js:456)               │
│   at login.test.js:23:18                          │
│   at async Test.fn (vitest/run.js:125)            │
│                                                    │
│ Screenshot: /tmp/screenshot-abc123.png             │
│ Replay URL: https://app.testdriver.ai/replay/...  │
└────────────────────────────────────────────────────┘

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Configuring Log Output

Control log verbosity: 
import { test } from 'vitest';
import { chrome } from 'testdriverai/presets';

test('with custom logging', async (context) => {
  const { testdriver } = await chrome(context, {
    url: 'https://example.com',
    logLevel: 'debug',  // 'error' | 'warn' | 'info' | 'debug'
    verbose: true       // Show detailed AI analysis logs
  });

  await testdriver.find('button').click();
});

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Log Filtering

Filter logs in the dashboard: 
Show only:
☑ Errors
☑ Warnings
☐ Info
☐ Debug

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Export Logs

Download application logs: 
[0:00] INFO System info configured
[0:05] SUCCESS Connected to sandbox
[0:15] INFO Finding: "login button"
[0:18] SUCCESS Cache hit: login button
[0:19] SUCCESS Clicked login button

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Learn More

Browser Logs

Console output and JavaScript errors

Network Monitoring

HTTP requests and responses

System Performance

CPU, memory, and resource usage

Test Replays

Complete test execution videos