'Test Pyramid' considered harmful IMO. It discourages people from writing tests against the public interface of their system , and instead encourages testing against internals.

This leads to a test pack that prevents refactoring, and can't be trusted to catch regression errors.

This is partly down to the widely confused definition of a 'unit test' (which a lot of people interpret as 'one test per class').

If you haven't seen it, please watch Ian Cooper's "TDD, Where Did It All Go Wrong" https://www.youtube.com/watch?v=EZ05e7EMOLM

Also, I thought continuous testing was having your test pack run all the time while coding, but hey ho.