Quote: "if one builds straight on top of web standards it’s going to be durable; tooling is fashionable and comes and goes" ~ Diego Marcos (AFRAME)

file	info
test
├── aframe
│   ├── index.html	testrunner AFRAME
│   ├── filter.js	XRF<->THREE filter tests [run online]
│   ├── index.js
│   └── pubsub.js	XRF promisable-events tests
├── generated
│   ├── test.js	parser tests (HaXe generated)
│   └── test.py	parser tests (HaXe generated)
├── test.js	parser test manual
├── test.lua	parser test manual
└── test.py	parser test manual

The generated tests use the parser JSON spec in src/spec as input.
In case of writing your own parser (without HaXe) you can use those JSON spec-files to ensure compatibility.