Documentation: add example tests
I'd like to write my own unit tests, but I'm having a hard time figuring out how to use the new test framework.
Some small but complete examples would be really helpful, ready to compile and run. I'm thinking about an example with a pure clean function, one with Gast properties, and maybe one with iTasks.
Ideally these examples can be used as templates, so that when I start a new project, I copy them to a test subdirectory in my project, import my modules, and start testing.