added test matrix

[billingsley-john]

Proposed changes

PR to add matrix testing to github actions CI for different cadquery versions

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• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Code refactoring
• Documentation Update (if none of the other choices apply)
• New tests

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• Pep8 applied
• Unit tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)

Further comments

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[shimwell]

That was quick

[codecov]

Codecov Report

Merging #760 (60947fe) into develop (cf27ff1) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           develop     #760   +/-   ##
========================================
  Coverage    95.38%   95.38%           
========================================
  Files           72       72           
  Lines         4724     4724           
========================================
  Hits          4506     4506           
  Misses         218      218           

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[shimwell]

Looks like the simulations using stl files made in cadquery version 2.1 work and the stl files made in cadquery master version doesn't work.

[billingsley-john]

Looks like the simulations using stl files made in cadquery version 2.1 work and the stl files made in cadquery master version doesn't work.

I wonder at what point this stopped working. I suppose this managed to get through because the circle ci tests are pulling a static docker image - we are already seeing the benefits of this new testing approach.

[billingsley-john]

Currently, when one set of tests in the matrix fails, it causes the cancellation of the other tests in the matrix. I.e. if tests fail for master, the tests running for 2.1 are cancelled. We don't want this - we want to return pass/fail for both scenarios each time.

[billingsley-john]

Continued in #764