testing_faq.md: clarify how to set system property for logging

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Yann Cébron 2022-01-20 17:15:44 +01:00
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@ -33,7 +33,8 @@ In some situations, added or changed files (e.g. DTDs provided by plugin) are no
### How to enable DEBUG/TRACE logging?
Set system properties `idea.log.debug.categories` or `idea.log.trace.categories`, respectively.
Provide JVM system properties (Gradle: via `systemProperty` for `test` task) `idea.log.debug.categories` or `idea.log.trace.categories`, respectively.
Multiple categories can set using a comma separated value list.
### How to get separate logs for failing tests?