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Added short section about ClassRule for JenkinsRule #7756

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Dec 16, 2024
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Added short section about ClassRule for JenkinsRule #7756

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9 changes: 8 additions & 1 deletion content/doc/developer/testing/index.adoc
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Expand Up @@ -604,4 +604,11 @@ TODO: RestartableJenkinsRule.
=== Custom builder

== Advanced and Tips etc.
//Tip: Use @ClassRule for JenkinsRule, if you're 900% sure that everything is ok

This section covers advanced topics and tips to improve testing.

=== `ClassRule` for `JenkinsRule`

Use `@ClassRule` with `JenkinsRule` when you want to share a single Jenkins instance across all tests in the class, especially when you need to avoid repeated setup and teardown of the Jenkins environment.
It’s a great way to optimize your tests when you don’t need a fresh Jenkins instance for every single test method, but instead want to run tests that all rely on the same shared Jenkins setup.
The field annotated with `@ClassRule` must be static because it is shared across all instances of the test class.
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