Fix iOS tests, upgrade iOS Firebase SDK

[shepeliev]

After updating Firebase iOS SDK some tests fail because ld could not find the required frameworks.
Another problem, FirebaseFirestore 8.1.0 has Carthage bug that is the cause of missing gRPC-C++ framework. This PR fixes these issues. Also, I've enabled iOS testing at GitHub actions. Unfortunately, auth tests fail on iOS simulator, therefore I've added a skip flag for ignoring tests on iOS.

[nbransby]

cant we skip the ios tests at the build script instead of at the test level @shepeliev @Reedyuk ?

[Reedyuk]

Yeah we could add something to skip ios tests in the build gradle if you want this?

[nbransby]

@Reedyuk yeah as that will a lot easier to maintain that at code level, but its just the auth tests we want to skip correct?

[nbransby]

@shepeliev last time I checked I thought the ios test didn't work at all - they just froze, in fact the runTest implementation was just a guess:

actual fun runTest(test: suspend () -> Unit) = runBlocking {
    val testRun = MainScope().async { test() }
    while (testRun.isActive) {
        NSRunLoop.mainRunLoop.runMode(
            NSDefaultRunLoopMode,
            beforeDate = NSDate.create(timeInterval = 1.0, sinceDate = NSDate())
        )
        yield()
    }
    testRun.await()
}

Are you saying this actually works now?

[shepeliev]

@shepeliev last time I checked I thought the ios test didn't work at all - they just froze, in fact the runTest implementation was just a guess:

actual fun runTest(test: suspend () -> Unit) = runBlocking {
    val testRun = MainScope().async { test() }
    while (testRun.isActive) {
        NSRunLoop.mainRunLoop.runMode(
            NSDefaultRunLoopMode,
            beforeDate = NSDate.create(timeInterval = 1.0, sinceDate = NSDate())
        )
        yield()
    }
    testRun.await()
}

Are you saying this actually works now?

Looks like it was an accurate guess ) because it works for me. Actually, I'm a newbie in KMP and Android background, so I can't say if iOS runTest implementation is propper, but I use it in another my project and as I said it works well enough.