Automated testing in FirefoxOS

Here on MDN the various automated testing methods for FirefoxOS are explained, but it can still be confusing. So let me write down what I know about it.
This is the list that is given on MDN:

• Gaia UI tests Python tests for Gaia UI interactions and features.
• Gaia integration tests JavaScript integration tests for Gaia, based on Marionette.
• Gaia unit tests Gaia unit tests with no UI interaction; written in JavaScript, not Marionette-based.
• Gaia performance tests Measures Gaia app performance based on internal instrumentation. The testing harness is in-tree.

Some random notes from me:

• Marionette tests == MarionetteJS tests == integration tests
• Gaia UI tests and MarionetteJS tests are doing the same kind of testing. But Gaia UI tests also run on device (on tbpl), while MarionetteJS test only run on desktop currently. The goals is to get rid of Gaia UI tests and only use MarionetteJS tests, eventually.
• Invoke MarionetteJS test: make test-integration-test TEST_FILES=./apps/clock/test/marionette/timer_test.js
• Invoke Gaia UI test on desktop: GAIATEST_SKIP_WARNING=1 gaiatest --binary $HOME/B2G/gaia/B2G/Contents/MacOS/b2g-bin --profile $HOME/B2G/gaia/profile --testvars /Users/mwargers/B2G/gaia/tests/python/gaia-ui-tests/gaiatest/testvars.json --restart --type b2g /Users/mwargers/B2G/gaia/tests/python/gaia-ui-tests/gaiatest/tests/accessibility/phone/test_a11y_phone_edit_contact.py