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https://issues.apache.org/jira/browse/MNG-6058?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17815574#comment-17815574
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Tamas Cservenak commented on MNG-6058:
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This is a long outstanding bug (present since 3.0.0) explained here MNG-8041
Resolver does not work like this, as explained here
[https://maven.apache.org/resolver-archives/resolver-2.0.0-alpha-7/common-misconceptions.html#misconception-no2-%E2%80%9Ctest-graph%E2%80%9D-is-superset-of-%E2%80%9Cruntime-graph%E2%80%9D]
Unsure will this be fixed for 3.x as that line worked like this from start.
Most probably to be fixed in 4.x
> Test dependencies should override application dependencies only during testing
> ------------------------------------------------------------------------------
>
> Key: MNG-6058
> URL: https://issues.apache.org/jira/browse/MNG-6058
> Project: Maven
> Issue Type: Bug
> Reporter: Christian Schulte
> Priority: Critical
> Attachments: MNG-6058.zip
>
>
> The following graph
> {code}
> POM
> |->a 2.0 compile
> |-->b 2.0 compile
> |->b 1.0 test
> {code}
> will be mediated to
> {code}
> POM
> |->a 2.0 compile
> |->b 1.0 test
> {code}
> The test dependency on b will make the transitive application dependency on b
> disappear. Maven should understand that the application dependency on b in
> version 2.0 is part of the application classpath and that the test
> dependency on b in version 1.0 is part of the test classpath only (overriding
> the application classpath). If someone adds a dependency on a project like
> that, the test dependency will disappear because the test scope is not
> transitive so that a "consuming" project gets a different application
> classpath than the project itself.
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