It's been hard to find a timeline or more general history of TDD and I should have probably used the word "had" above. But my understanding is RSpec[0] was a hu

It's been hard to find a timeline or more general history of TDD and I should have probably used the word "had" above. But my understanding is RSpec[0] was a huge driver of the test driven development hype cycle. While DHH[1] has, as of 2014, come out against TDD and was probably never 100% on-board he is not the whole community and that's still a gap of 9 years where, in my understanding, it was broadly popularised as both "the way you should be doing things in Rails" and, as with most things in Rails "the way everyone should be doing things". [0]: https://www.stevenrbaker.com/tech/history-of-rspec.html https://www.stevenrbaker.com/tech/history-of-rspec.html [1]: https://dhh.dk/2014/tdd-is-dead-long-live-testing https://dhh.dk/2014/tdd-is-dead-long-live-testing