Regression testing

[Ruudjhuu]

I would like the idea to somehow add tests to be able to check if no regression is introduced. I don't think there is a "good" framework for testing openscad scripts. For functions that only calculate values, openscad has a test framework. For 3d or complex 2d object this is harder.

I came up with two possible ways to test openscad stuff.

• Create tests like is done in BOSL2

  • pros
    • Fast testing
    • No other dependencies introduced
  • cons
    • I consider these test unreadable, and makes the learning curve for participation to this repo big.
    • hard to maintain

• Compare exports with openscad cli

  • pros
    • easy to understand / read
    • easy maintainable
  • cons
    • tests will probably take long (depends on export size. low res png will be faster than high res stl)
    • repo size will grow fast with expected exports.
    • adds dependency on another scripting / programing language (I was thinking python) to automate these tests.