In Spring Boot, how to reset the metrics registry before each test?

Question

I have tests and want to make assertions against micrometer metrics, but the tests run in random order so I want to reset or clear all the micrometer metrics before each test so my assertion are always correct.

Answer 1

It depends on the Meter registry used. If you are using a SimpleMeterRegistry you could do:

registry.getMeters().forEach((meter) -> registry.remove(meter))