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https://jira.codehaus.org/browse/SUREFIRE-1055?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=341345#comment-341345
 ] 

Kristian Rosenvold commented on SUREFIRE-1055:
----------------------------------------------

The plot thickens; everything is reported correctly to 
org.apache.maven.surefire.junitcore.ConcurrentRunListener#testStarting



> Parallel JUnit does not run all test methods with parallel=classesAndMethods 
> perCoreThreadCount=false useUnlimitedThreads=true and threadCountMethods 
> specified
> ---------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: SUREFIRE-1055
>                 URL: https://jira.codehaus.org/browse/SUREFIRE-1055
>             Project: Maven Surefire
>          Issue Type: Bug
>          Components: Junit 4.7+ (parallel) support, Maven Failsafe Plugin, 
> Maven Surefire Plugin
>    Affects Versions: 2.16
>            Reporter: Chris Hansen
>         Attachments: surefire-output.txt
>
>
> Some test methods are skipped at random with the below configuration. When 
> test methods are skipped in this way, only one method in the class runs. 
> Running tests repeatedly with no code change often yields a different number 
> of tests with each run (e.g. see the attached surefire-output.txt). Tests 
> that take longer to run are less likely to be affected. This affects version 
> 2.16 of Surefire and Failsafe equally.
> Here is a simple test project which reproduces the issue: 
> https://github.com/hansenc/SUREFIRE-1055
> It has a few simple test classes with a naming convention for how many test 
> methods are in each class (e.g. Methods4Test has 4 test methods).
> {code:xml}
> <plugin>
>     <groupId>org.apache.maven.plugins</groupId>
>     <artifactId>maven-surefire-plugin</artifactId>
>     <version>2.16</version>
>     <configuration>
>         <parallel>classesAndMethods</parallel>
>         <perCoreThreadCount>false</perCoreThreadCount>
>         <useUnlimitedThreads>true</useUnlimitedThreads>
>         <threadCountMethods>3</threadCountMethods>
>     </configuration>
> </plugin>
> {code}



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