re-enable Android CI

[tayloraswift]

it looks like Swift Testing is not working with Android:

/home/runner/work/swift-png/swift-png/Sources/LZ77Tests/Bitstreams.swift:4:8: error: no such module 'Testing'
  2 | @testable
  3 | import LZ77
  4 | import Testing
    |        `- error: no such module 'Testing'
  5 | 
  6 | @Suite

this is happening even though run-tests: false is specified in the workflow.

@marcprux any idea what’s going on here?

[marcprux]

Should set build-tests: false. The Testing module is not yet available for Android … it is WIP.

[marcprux]

Also, you can guard for it in a future-proof way in your tests with:

#if canImport(Testing)
import Testing

@Suite…

#endif

That way, once Testing is available for Android, it will just fall into place.