We're currently working on ensuring that most plugins have native unit tests set up (historically the focus has been on integration tests), which highlighted the fact that we don't currently have any solution in place for unit testing native desktop plugin code.

What we need for each platform (Windows, macOS, and Linux) is to:

• decide on a unit testing framework
• add a proof-of-concept to at least one plugin
• add knowledge of how to run those tests to flutter_plugin_tools

My expectation is that we would likely use XCTest for macOS (it's already what we're using for iOS, so should be very straightforward), gtest or CTest for Linux (@robert-ancell, thoughts?), and likely the same for Windows as for Linux (since they both use CMake, so should be able to be similar, reducing the number of test systems people need to know).

/cc @cbracken

We could track this with separate issues per platform, but my hope is that this is going to be straightforward enough that we won't need to, and can just check of platforms here:

• Windows
• macOS
• Linux