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https://issues.apache.org/jira/browse/FLINK-27605?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gabor Somogyi reassigned FLINK-27605:
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Assignee: Gabor Somogyi
> Upgrade mockito to a version where static function mocking is possible
> ----------------------------------------------------------------------
>
> Key: FLINK-27605
> URL: https://issues.apache.org/jira/browse/FLINK-27605
> Project: Flink
> Issue Type: Sub-task
> Components: Tests
> Affects Versions: 1.16.0
> Reporter: Gabor Somogyi
> Assignee: Gabor Somogyi
> Priority: Major
>
> There are some external APIs used by Flink which are designed in a way which
> is super hard to test.
> Such a pattern is when a class instance is only available through a static
> function and no publicly available constructor exists.
> A good example to this is "UserGroupInformation" class in Hadoop library.
> We've listed many different possibilities how to make it testable in the
> following place:
> https://github.com/apache/flink/pull/19372#discussion_r849691193
> After deep consideration we've agreed to use static function mocking in such
> exceptional cases in order to make code clean and maintainable.
> It should be emphasized that the general direction not changed in terms of
> Mockito and Powermock usage. It should be avoided as much as possible.
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