I run with lein test-refresh on my clojure code, as soon as I change code in either my src folder or my test folder, the tests are run. It's instant. There's n

I run with lein test-refresh on my clojure code, as soon as I change code in either my src folder or my test folder, the tests are run. It's instant. There's no waiting on the startup time here at all, sometimes its so fast I don't believe the tests have actually run (so I break something and change it back to confirm). It's a very very fast way of developing. You can see me breaking a test here and fixing it: https://www.youtube.com/watch?v=XKCZv9YD0KI https://www.youtube.com/watch?v=XKCZv9YD0KI The test runner is in the bottom horizontal pane.The tests run instantly.