Requires: - Python 2.5 - PyCairo - PySyck (or PyYAML) - html5lib Run specextract.py once, which extracts the relevant bits of the spec from the file 'current-work' and produces 'current-work-canvas.xhtml'. Then run gentest.py, which creates the contents of the 'tests' directory. Look in 'tests/index.html' for links to all the files. (Also a 'mochitests' directory is created, for Mozilla's test framework.) Most of the tests are defined in tests.yaml - they have references to spec statements defined in spec.yaml, and JavaScript code which gets executed in the test (plus some @-prefixed stuff to allow lazier test writing), and Python code which uses PyCairo to generate the images of expected output. (None of this has been designed (or cleaned up afterwards) for readability or elegance; but it works for me.)