I’m not sure if the talks (i.e. videos) from the recent MageTestFest conference will show up online, but these slides from Vinai Kopp are worth a link, if only because they capture most of the weird, non-obvious incantations you’ll need to run Magento 2’s unit and integration tests.
Magento 2 Command Line Test Invocationsastorm
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Quick dispatches from the life of a working programmer.