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https://issues.apache.org/jira/browse/COLLECTIONS-884?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gary D. Gregory resolved COLLECTIONS-884.
-----------------------------------------
Fix Version/s: 4.6.0
Resolution: Fixed
> AbstractMapTest not running nested tests
> ----------------------------------------
>
> Key: COLLECTIONS-884
> URL: https://issues.apache.org/jira/browse/COLLECTIONS-884
> Project: Commons Collections
> Issue Type: Improvement
> Components: Map
> Affects Versions: 4.5.0
> Reporter: Ben Manes
> Priority: Major
> Fix For: 4.6.0
>
>
> I use AbstractMapTest as an additional test suite for Caffeine Cache. When
> refactoring tests and running it in Eclipse, I noticed the following warning.
> {noformat}
> Jan 31, 2026 12:32:52 PM
> org.junit.platform.launcher.core.DiscoveryIssueNotifier logIssuesWARNING:
> TestEngine with ID 'junit-jupiter' encountered 3 non-critical issues during
> test discovery:
> (1) [WARNING] Inner class
> 'org.apache.commons.collections4.map.AbstractMapTest$TestMapEntrySet' looks
> like it was intended to be a test class but will not be executed. It must be
> static or annotated with @Nested.
> Source: ClassSource [className =
> 'org.apache.commons.collections4.map.AbstractMapTest$TestMapEntrySet',
> filePosition = null]
> at
> org.apache.commons.collections4.map.AbstractMapTest$TestMapEntrySet.<no-method>(SourceFile:0)
> (2) [WARNING] Inner class
> 'org.apache.commons.collections4.map.AbstractMapTest$TestMapKeySet' looks
> like it was intended to be a test class but will not be executed. It must be
> static or annotated with @Nested.
> Source: ClassSource [className =
> 'org.apache.commons.collections4.map.AbstractMapTest$TestMapKeySet',
> filePosition = null]
> at
> org.apache.commons.collections4.map.AbstractMapTest$TestMapKeySet.<no-method>(SourceFile:0)
> (3) [WARNING] Inner class
> 'org.apache.commons.collections4.map.AbstractMapTest$TestMapValues' looks
> like it was intended to be a test class but will not be executed. It must be
> static or annotated with @Nested.
> Source: ClassSource [className =
> 'org.apache.commons.collections4.map.AbstractMapTest$TestMapValues',
> filePosition = null]
> at
> org.apache.commons.collections4.map.AbstractMapTest$TestMapValues.<no-method>(SourceFile:0){noformat}
> I verified that those nested tests are not being run and added them
> successfully.
> {code:java}
> @Nested final class MapKeySetTest extends TestMapKeySet {}
> @Nested final class MapValuesTest extends TestMapValues {}
> @Nested final class MapEntrySetTest extends TestMapEntrySet {} {code}
> This looks like an innocent mistake when you converted from JUnit 3. I
> suspect that its not running in your suite and needs the missing annotation.
> It would be prudent to review the other abstract test suites.
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