This is now deprecated/unused, as of https://github.com/mozilla/amo-validator/pull/341
You need Python 2.6 or higher. Then clone this repo:
git clone git://github.com/mozilla/test-amo-validator.git
Install the dependencies:
cd test-amo-validator pip install -r requirements.txt
In addition to this command you also need to build spidermonkey from source as detailed in amo-validator's install instructions.
cd test-amo-validator nosetests --processes=2
Then make a cup of tea while all of those tests run. It takes a while. If you have more than two cores on your machine or you don't mind pwnage, you can try to increase the number of parallel processes used for testing.
By default, the HEAD of amo-validator's git repo will be installed. If you want to run the tests against your local amo-validator, install it like this within your test-amo-validator virtualenv:
pushd ~/amo-validator python setup.py develop --no-deps popd