Swift Testing support

[brzzdev]

wait is an extension on XCTestCase, so is unusable when using the new Testing library

[groue]

Hello, @brzzdev. You're right.

I'm not using CombineExpectations these days, and I'm not planning to address this need myself. Contributions and pull requests are welcome!

[okycelt]

I'm not using CombineExpectations these days, and I'm not planning to address this need myself. Contributions and pull requests are welcome!

@groue, may I ask what you're using instead of CombineExpectations? We've grown quite fond of this library 🙂

[groue]

Hello @okycelt, thank you for the compliment :-) I'm using much less Combine in new code. Existing XCTest tests that work fine do not need to be migrated to Testing. And new tests that use Testing can live along with XCTest.