testing-visual-regression

---
name: testing-visual-regression
description: |
  Detect visual changes in UI components using screenshot comparison.
  Use when detecting unintended UI changes or pixel differences.
  Trigger with phrases like "test visual changes", "compare screenshots", or "detect UI regressions".
  
allowed-tools: Read, Write, Edit, Grep, Glob, Bash(test:visual-*)
version: 1.0.0
author: Jeremy Longshore <jeremy@intentsolutions.io>
license: MIT
---
# Visual Regression Tester

This skill provides automated assistance for visual regression tester tasks.

## Prerequisites

Before using this skill, ensure you have:
- Test environment configured and accessible
- Required testing tools and frameworks installed
- Test data and fixtures prepared
- Appropriate permissions for test execution
- Network connectivity if testing external services

## Instructions

### Step 1: Prepare Test Environment
Set up the testing context:
1. Use Read tool to examine configuration from {baseDir}/config/
2. Validate test prerequisites are met
3. Initialize test framework and load dependencies
4. Configure test parameters and thresholds

### Step 2: Execute Tests
Run the test suite:
1. Use Bash(test:visual-*) to invoke test framework
2. Monitor test execution progress
3. Capture test outputs and metrics
4. Handle test failures and error conditions

### Step 3: Analyze Results
Process test outcomes:
- Identify passed and failed tests
- Calculate success rate and performance metrics
- Detect patterns in failures
- Generate insights for improvement

### Step 4: Generate Report
Document findings in {baseDir}/test-reports/:
- Test execution summary
- Detailed failure analysis
- Performance benchmarks
- Recommendations for fixes

## Output

The skill generates comprehensive test results:

### Test Summary
- Total tests executed
- Pass/fail counts and percentage
- Execution time metrics
- Resource utilization stats

### Detailed Results
Each test includes:
- Test name and identifier
- Execution status (pass/fail/skip)
- Actual vs. expected outcomes
- Error messages and stack traces

### Metrics and Analysis
- Code coverage percentages
- Performance benchmarks
- Trend analysis across runs
- Quality gate compliance status

## Error Handling

Common issues and solutions:

**Environment Setup Failures**
- Error: Test environment not properly configured
- Solution: Verify configuration files; check environment variables; ensure dependencies are installed

**Test Execution Timeouts**
- Error: Tests exceeded maximum execution time
- Solution: Increase timeout thresholds; optimize slow tests; parallelize test execution

**Resource Exhaustion**
- Error: Insufficient memory or disk space during testing
- Solution: Clean up temporary files; reduce concurrent test workers; increase resource allocation

**Dependency Issues**
- Error: Required services or databases unavailable
- Solution: Verify service health; check network connectivity; use mocks if services are down

## Resources

### Testing Tools
- Industry-standard testing frameworks for your language/platform
- CI/CD integration guides and plugins
- Test automation best practices documentation

### Best Practices
- Maintain test isolation and independence
- Use meaningful test names and descriptions
- Keep tests fast and focused
- Implement proper setup and teardown
- Version control test artifacts
- Run tests in CI/CD pipelines

## Overview


This skill provides automated assistance for visual regression tester tasks.
This skill provides automated assistance for the described functionality.

## Examples

Example usage patterns will be demonstrated in context.