Test coverage about windowjs

[sc0ttj]

I wrote a little test suite which is meant to be self contained, zero deps, isomorphic, portable etc

https://github.com/sc0ttj/tea

It might be one of the easier test suites to get working outside a regular browser or node context..

[joaodasilva]

@sc0ttj thanks for the hint! Zero deps is very appealing :-)

I'm building a custom test runner first, to make use of subprocesses in Window.js: each test suite runs in its own process, and N suites run in parallel at a time (N == number of parallel threads supported by the current machine).

The more important API to test right now is the Canvas API, and the tests will be mostly pixel diff tests: does the image rendered match an expected image. Does tea support that?

[joaodasilva]

de115f7 added a test runner and initial test coverage for the File API, Process API and some globals.

6a09576 enabled running those tests in the build workflows.

The next tests will cover the Window API, and the runner/test library should also support pixel diff tests to test the output of the Canvas API via screenshots.