I rarely use REPL driven development, however in my limited experience using it, it only makes integration testing faster, not unit testing.
I used this methodology with a Slack bot, because doing integration testing with Slack is annoying when I'm not directly testing the Slack communication portion.
Edit: It seems like there are a lot of comments surrounding him "abandoning" TDD. Not only did he not do that, he literally says in the conclusion of the article that he would not recommend doing it.
I used this methodology with a Slack bot, because doing integration testing with Slack is annoying when I'm not directly testing the Slack communication portion.
For example: https://github.com/cjsaylor/chessbot/blob/master/cmd/repl/ma...
Edit: It seems like there are a lot of comments surrounding him "abandoning" TDD. Not only did he not do that, he literally says in the conclusion of the article that he would not recommend doing it.