Reliability testing

[tbranyen]

Alexa Top 500

• http://www.alexa.com/topsites
• Render each fully in electron-headless
• Take screenshot of before: ./report///before.png
• Apply diffHTML globally, should be 0 changes:
  • diff.outerHTML(document.documentElement, document.documentElement.outerHTML)
• Take another screenshot ./report///after.png
• Generate visual comparison report
  • Show percentage difference pixels
  • Show visual artifact region clusters with red border
  • Even more information like which elements, invalid markup errors, etc.