Write Some Unit Tests

[dkitzman]

We should write some unit tests to make sure things work how we expect them to. There's a lot of builtin support in rust for this.

[BijanT]

Do you think the best way to do unit tests is through making a test program that targets a cortex-m device running through QEMU? I'm honestly not sure how unit tests work with embedded software

[dkitzman]

I don't think that's necessary. You can simulate all the inputs an outputs to functions if you need to. Like, for setting up the initial stack for a task, you could pass a known pointer in, and then have it do it's thing, and then inspect the memory that was modified by that function to make sure it looks right. Stuff like that. I think for the most part, you don't need to actually run on the hardware to do testing. I think both kinds of testing are useful for different things though.