Add a fancy debug page

[paulcsmith]

Rough idea:

• Save html page for each spec to tmp/lucky_flow/debug_pages/. Example: tmp/lucky_flow/debug_pages/signs-a-user-in-spec.html
• Show what interactions happened (Ran click "@heading", Ran fill UserForm, etc.) on a pane to the left
• Clicking what happened in the left plane (click "@heading") shows screenshot of the page on the right
• Would love to also include styles and images, but since the server stops after spec ends it could be really hard
  • Maybe copy assets and rewrite the asset URLs the page? Probably too much for v1
• Also allow frameworks to extend the page and show other debug info
  • What page was rendered
  • What action rendered it
  • What assigns were passed to it
    • forms - so you can see forms
    • context
    • headers, etc.
    • session
  • Allow customizing objects TheObjext#lucky_flow_inspect
    • So for forms you might show how if there are errors in an easily digestible way
      * Or queries might show the SQL that it had and the results

Examples of left pane

• Click “@heading” with text “adds”
• Fill UserForm
• Should have “@heading” with text “adds”

Example of right pane

Click "@heading" with text "adds"

Details

• On page Users::IndexPage
  • Data:
  • Users: <UserQuery#lucky_flow_inspect> which would print the SQL that was run, number of results, etc.
• Rendered by Users::Index
• Params
• Headers