sbt ~test will run all your tests on file save. sbt ~test-quick will only run previously failed or new tests on file save. On one Play project we have ~16

sbt ~test will run all your tests on file save. sbt ~test-quick will only run previously failed or new tests on file save. On one Play project we have ~160 test cases, including integration tests that spin up real Neo4j and Elasticsearch instances. Running the whole suite takes around 90 seconds. That would be far less if I did a better job separating unit and integration tests or mocking out the external dependencies.