What do we want? Execution of unit tests!
When do we want it? Uh...4 months ago?
The `Xamarin.Android.NUnitLite` assembly allows writing NUnit-based
unit tests that execute on-device, and the `Mono.Android-Tests.csproj`
project contains a number of such unit tests.
The problem is that these unit tests aren't executed as part of the
Jenkins build process, so there's no way to know if a given commit
actually breaks anything.
In short, the existence of those unit tests is meaningless.
The task, then, is to fix the `make run-all-tests` target so that it
runs on-device unit tests...on an Android device.
Which raises all manner of problems. :-) (Hence 4+ months!)
For starters, our internal tooling is a horrible mish-mash of make(1),
ruby(1), bash(1), which creates an emulator, launches it, installs the
test .apk onto the emulator, and runs the tests. I don't want all of
that "cruft" in this repo, which means it needs to be rewritten in a
form more amenable to this repo: MSBuild tasks....and some make(1).
:-)
Add a new `build-tools/scripts/UnitTestApks.targets` file, which will
process an `@(UnitTestApk)` Item Group to permit deploying, running,
and undeploying test .apks from an attached Android device.
Add a slew of MSBuild tasks to support `@(UnitTestApk)`.
Update the default `$(AndroidSupportedTargetJitAbis)` value to be
`armeabi-v7a:x86`. The created Android emulator is x86.