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https://issues.apache.org/jira/browse/FLINK-6395?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15988491#comment-15988491
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ASF GitHub Bot commented on FLINK-6395:
---------------------------------------
Github user zentol commented on the issue:
https://github.com/apache/flink/pull/3790
As you can see in the `UnaryOperatorTestBase` the constructor is already
protected. The thing is that junit complains since the classes contain junit
annotations (`@After`, `@Parameterized`) class but can't be instantiated. When
i run these test in IntelliJ they are marked as failed tests due to an
initialization error.
Making the classes abstract makes it clear they aren't actually
self-contained test classes.
> TestBases not marked as abstract
> --------------------------------
>
> Key: FLINK-6395
> URL: https://issues.apache.org/jira/browse/FLINK-6395
> Project: Flink
> Issue Type: Improvement
> Components: Tests
> Affects Versions: 1.3.0
> Reporter: Chesnay Schepler
> Assignee: Chesnay Schepler
> Priority: Trivial
>
> The following test base classes don't contain any test methods and should be
> marked as abstract:
> BinaryOperatorTestBase
> DriverTestBase
> UnaryOperatorTestBase
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