Integration on linux with "--enable-test-discovery"

[patrick-zippenfenig]

Hi,

is there a way to use it with "--enable-test-discovery"?

As tests for linux are now automatically synthesised there is no LinuxMain.swift anymore.

Best, Patrick

[ar4s]

When you build on linux environment you have to add test observer (SwiftTestReporter.TestObserver) and LinuxMain.swift is the best place for that.
Alternatively, you can generate LinuxMain.swift by following command swift test --generate-linuxmain --enable-test-discovery and then add observer.

[patrick-zippenfenig]

Yes, this is basically using the old LinuxMain.swift approach. --generate-linuxmain will always generate a new LinuxMain.swift and remove the observer after every execution. With bash scripting the observer could be added afterwards, but this seems to be an ugly solution.

For a CI/CD integration that automatically adds news tests, I was hoping that there are other options to enable the observer without having to use LinuxMain.swift.

[aufflick]

A hack I'm using is to create a test file AATests.swift with a no-op test that calls the initialization code, ie:

import XCTest
import SwiftTestReporter

class AATests: XCTestCase {
  func testAA() {
    _ = TestObserver()
  }
}

This works because only tests that start after the initialization will be captured, and (currently) spm evaluates tests in alphabetical order. If test order randomization happens one day this technique wouldn't work with that.

Another hack I thought of would be to make an Objective-C class that implements + load or + initialize and depend on that as a base class or otherwise cause the class to be loaded/initialized.