This adds a lightweight test framework that runs a set of system tests under a container with the goal of monitoring the host system. The goal with these tests is to catch the numerous edge cases that happen when the system metrics function from a /hostfs path inside a container.
The tests have a fairly large matrix of configurations, as we need to test both a wide variety of container permission settings, as well as differences in how linux distros will configure cgroups.
The framework here was designed with the goal of being relatively idiomatic; you can just run the framework with go test as you would normally.
You can run the tests yourself with go test -v ./tests
As you may have noticed, there's a non-zero amount of TODO statements here, since these tests were built to aggravate a bunch of existing bugs, so certain parts of the tests will remain un-implemented until those bugs are fixed.
What does this PR do?
Closes https://github.com/elastic/beats/issues/38241
This adds a lightweight test framework that runs a set of system tests under a container with the goal of monitoring the host system. The goal with these tests is to catch the numerous edge cases that happen when the system metrics function from a
/hostfspath inside a container.The tests have a fairly large matrix of configurations, as we need to test both a wide variety of container permission settings, as well as differences in how linux distros will configure cgroups.
The framework here was designed with the goal of being relatively idiomatic; you can just run the framework with
go testas you would normally.You can run the tests yourself with
go test -v ./testsAs you may have noticed, there's a non-zero amount of TODO statements here, since these tests were built to aggravate a bunch of existing bugs, so certain parts of the tests will remain un-implemented until those bugs are fixed.
Why is it important?
See https://github.com/elastic/beats/issues/38241, we really need test for this particular case.
List of bugs that are responsible for TODO statements in the tests:
Checklist
CHANGELOG.md