Sequencer.
root / test
The test framework is home-grown and sort of hacked up, but fairly simple.
test/generate_run_tests.py is given a set of test modules. By convention, these have the form *_test.hs. It extracts functions beginning with test_, and generates a RunTests program that calls all of them. RunTests actually takes a regex and only runs tests that match.
Test names are prefixed with interactive- for tests that want to have a chat with you, gui- that are going to be popping up windows right and left (more accurately, ones that require a special initialization function, which means gui in practice), and normal- for well-behaved tests that do none of that.
Tests are run by test/run_tests. It runs all of the normal- tests and redirects their stdout to build/test.output.
Failing tests print lines beginning with __->, so failures are reported by grepping test.output. After running the tests, the coverage report goes in build/hpc/index.html.