[jira] [Created] (MDEP-749) copy-dependencies fails when using excludeScopes if result is empty

["Herve Boutemy (Jira)" <ji...@apache.org>]

Herve Boutemy created MDEP-749:
----------------------------------

             Summary: copy-dependencies fails when using excludeScopes if result is empty
                 Key: MDEP-749
                 URL: https://issues.apache.org/jira/browse/MDEP-749
             Project: Maven Dependency Plugin
          Issue Type: Bug
          Components: copy-dependencies
    Affects Versions: 3.1.2
            Reporter: Herve Boutemy
             Fix For: 3.2.0


{{mvn dependency:copy-dependencies}} works well even if a POM does not have any dependencies
but {{mvn dependency:copy-dependencies -DexcludeScope=test}} fails if the result is empty (either because it was empty without the exclusion, or because the exclusion removed every existing dependency, like in this case if junit was a test scoped dependency)

{noformat}$ mvn dependency:copy-dependencies -DexcludeScope=test
[INFO] Scanning for projects...
[INFO] 
[INFO] --------------------< com.sonatype:dep-scope-test >---------------------
[INFO] Building dep-scope-test 1.0-SNAPSHOT
[INFO] --------------------------------[ jar ]---------------------------------
[INFO] 
[INFO] --- maven-dependency-plugin:2.8:copy-dependencies (default-cli) @ dep-scope-test ---
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  0.765 s
[INFO] Finished at: 2021-05-20T08:21:16+02:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-dependency-plugin:2.8:copy-dependencies (default-cli) on project dep-scope-test:  Can't exclude Test scope, this will exclude everything. -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
{noformat}

can be done easily on a project created with {{mvn archetype:generate -DgroupId=com.sonatype -DartifactId=dep-scope-test -DarchetypeArtifactId=maven-archetype-quickstart -DarchetypeVersion=1.4 -DinteractiveMode=false}}



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