thread on running original package test suites

[MMesch]

It would be incredibly useful to run subsets of the tests provided by a package. So far it seems we are shipping our own test suites, and filtering out test folders. Any thoughts on this? More specific questions:

• Would including the test folders be a big hit on size if we'd exclude test data?
• Is it possible to keep these folders on CI for testing but not include them when shipped?
• What's the best way in practice to run selected tests?

[jjerphan]

This CEP and its implementation in rattler-build (usable with the --experimental flag on the latest builds) should allow creating "tests" packages easily (for instance one could have numpy and numpy-tests).