Unify a lot of code related to how to load test assemblies.
This resulted in adding a couple of test assemblies to monotouch-test when executed on macOS (this was a bug), and this also required adapting some of those tests to work correctly on macOS.
Implement a launch timeout for macOS and Mac Catalyst apps where if a certain
environment variable (LAUNCH_SENTINEL_FILE) is set, the app will create that
file at launch. The code launching the test app will wait 10 seconds and check
if the file is there: if it's not, something went wrong, in which case the app
should be terminated and launched again.
This necessitated re-implementing the launch script in C#, since it got quite
complicated to implement in bash.
This fixes an issue with Mac Catalyst apps where something would go wrong
during the app launch and nothing would happen (but the app wouldn't be
deadlocked, it would just sit there, doing nothing).
The TestRuntime.cs and ApplePlatform.cs had to be added to a few test projects
to make this compile, which required a few fixes in these files for building
with legacy Xamarin.Mac.
Fixes https://github.com/xamarin/maccore/issues/2414.
This fixes a problem where the build from the different projects could stomp
on eachother in the obj/bin folders. It's technically possible to make this
work by setting up custom [Base][Intermediate][OutputPath] properties in the
project files, but the simplest solution is to just make sure there's no more
than a single project per directory.
This is done early so we can resolve the inner framework, inside the
xcframework, and let the existing framework support do most of the
work.
The resolving code has unit tests. Custom projects for "NoEmbedding"
exists for all supported platforms and executed by xharness.
A sample `xcframework` with tests projects is also available
[here](https://github.com/spouliot/xcframework).
The xcframework test case is based on Rolf's earlier/partial implementation.
https://github.com/rolfbjarne/xamarin-macios/commit/xcframework
Things to note:
Do not rename a framework (like XTest) to use it in an xcframework
(like XCTest). That will fail at codesign but won't give anything
useful. You might think signing the framework (instead of the inner
binary) would solve it. It does, as it codesign, but then the app
crash at startup. At some point you realize some symbols are still
using XTest (not XCTest) and then you can delete several other weird
workarounds (like for `ld`) because all of it was cause by this
never identified rename.
dSYM support (and tests) to be done in a separate PR.
Rolf Bjarne Kvinge
Sebastien Pouliot