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

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.

Solution 1:^[1]

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

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

Solution 2:^[2]

You can use clear() method

registry.clear();

Solution 3:^[3]

You should try to mock meter registry, since they are monitoring and should not affect your business logic and used for alerting. In case that doesn't help:

for gauge you can reset values

AtomicInteger myGauge = meterRegistry.gauge("numberGauge", new AtomicInteger(0));
myGauge.set(0);

for counter, reinitialize,

counter = meterRegistry.counter(counter.toString());

Reference: https://micrometer.io/docs/concepts#_manually_incrementingdecrementing_a_gauge

Sources

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Source: Stack Overflow

Solution	Source
Solution 1	rogerdpack
Solution 2	mrek
Solution 3	Sanket Barapatre

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

Solution 1:[1]

Solution 2:[2]

Solution 3:[3]

Sources

Related Questions

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