Make test case recorder

[pokey]

Goal: to make it super lightweight to make a new test case so that you don’t think twice about it, while keeping them robust enough not to rot if we rework internals

• New command cursorless.recordTestCase, which asks for a test case name / maybe directory

• Waits for next cursorless command

• On next cursorless command, takes a snapshot of current file, including cursor locations, visible lines, file type, and relevant decorations

• Takes snapshot after cursorless command, including cursor and visible lines

• Saves before, command, context, and after as a test case

• Then add code that can parse this type of fixture and run it as a test

• I'd argue that cursorless command should be captured pre-inference, but don't feel strongly

• This technique can be used for testing transformations, inside / outside, actions, etc

• For example, to check whether the delimiter / inside outside stuff is working for eg "type" transformation, can run the command with "take" and "Chuck". This makes it robust to changes in internal representations, at the expense of being slightly less granular

• Also save highlights to make sure those don't break?

• could then also use these test cases to automatically record GIFs (Make GIF generator using existing test cases #215)

• let's use this one to capture Add type transformation #32 (comment) as a test case

Extra credit is:

• capture clipboard before and after

Follow-on issues filed:

• capture visible lines before and after Test a command's effect on visible ranges #160
• test ability to work across splits #216
• capture highlights Support testing decorations #199

[pokey]

Note that we'll probably want to finish #69 before we record any test cases as that will change the wire format from talon

[pokey]

Use this to test:

• extracting name from exported classes and functions in Typescript
• extracting name from decorated classes and functions in Python

[pokey]

To test:

• Delimiters get removed from source of "move" and "cut"
• "that" gets set properly
• Behaviour of "wrap" wrt current selection:
  • Target selected
  • Cursor at beginning of target
  • Cursor at end of target
  • Cursor bigger than target tot left / right / both
  • Multiple cursors? (Eg one cursor at end and one at beginning, etc)

[pokey]

• space delimited sequence support when combined with punctuation, eg for "This is, a test!":
  • "chuck sit"
  • "move sit after each"
  • "move air after each"
  • "move each before air"
  • "bring air before bang"

[pokey]

• Make sure leading delimiter with "chuck type" gets deleted

[pokey]

• Test Fix bug with two adjacent tokens #12 and various overlapping ranges

[AndreasArvidsson]

To test

• Excluding positions in ranges. take air until bat take air tween bat

[pokey]

More to add:

• "move sit to before file"
• "chuck last char air"

[pokey]

• Make sure basic things work in unsupported languages

[pokey]

• Multi-target inference rules, eg "swap funk air with bat", "swap air with funk bat", etc

[pokey]

• select a token, then wrap it and make sure selection in right place

[pokey]

• "take token" / "take first word" when cursor is at beginning, middle and end of token