I tried to enable them ( - name: extension-qunit-composer) in integration/config/zuul/layout.yaml , but they fail:
https://integration.wikimedia.org/ci/job/mwext-qunit-composer-jessie/5910/console
https://integration.wikimedia.org/ci/job/mwext-qunit-composer-jessie/6336/consoleFull
I think you can also use magic comment
check experimental
to run them on a Lexeme patch