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From "Hinkle, Cameron" <Cameron.Hin...@nike.com>
Subject Surefire NPE
Date Mon, 01 Nov 2010 15:55:12 GMT
Greetings,

I've been using Maven and Surefire on a project for about a year now and have sporadically
seen a problem that I've always been able to get around but want to get to the bottom of.
 It's a null pointer exception sometimes when I run "mvn" and it tries to run all our tests.
 It happens rarely but four different people on the project have run into it at one point
or another.  For some reason if I bypass the tests and start my Jetty server through maven,
I can go back to run the tests after stopping Jetty and the tests run just fine.  This is
typically my workaround.

Here is the output from the command line:

C:\workspaces\tesla\readiness-mobile\tesla-src-mobile>mvn
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Building Templated Service Layer Assembler
[INFO]    task-segment: [package]
[INFO] ------------------------------------------------------------------------
[INFO] [resources:resources {execution: default-resources}]
[WARNING] Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build
is platform dependent!
[INFO] Copying 6 resources
Downloading: http://repo1.maven.org/maven2/com/nike/classes/2.2/classes-2.2.pom
[INFO] Unable to find resource 'com.nike:classes:pom:2.2' in repository central (http://repo1.maven.org/maven2)
[INFO] [compiler:compile {execution: default-compile}]
[INFO] Compiling 1 source file to C:\workspaces\tesla\readiness-mobile\tesla-src-mobile\target\classes
[INFO] [resources:testResources {execution: default-testResources}]
[WARNING] Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build
is platform dependent!
[INFO] Copying 76 resources
[INFO] [compiler:testCompile {execution: default-testCompile}]
[INFO] Nothing to compile - all classes are up to date
[INFO] [surefire:test {execution: default-test}]
[INFO] Surefire report directory: C:\workspaces\tesla\readiness-mobile\tesla-src-mobile\target\surefire-reports
[INFO] ------------------------------------------------------------------------
[ERROR] FATAL ERROR
[INFO] ------------------------------------------------------------------------
[INFO] null
[INFO] ------------------------------------------------------------------------
[INFO] Trace
java.lang.NullPointerException
        at java.util.Hashtable.put(Hashtable.java:394)
        at java.util.Properties.setProperty(Properties.java:143)
        at org.apache.maven.surefire.booter.SurefireBooter.setForkProperties(SurefireBooter.java:510)
        at org.apache.maven.surefire.booter.SurefireBooter.forkSuites(SurefireBooter.java:483)
        at org.apache.maven.surefire.booter.SurefireBooter.runSuitesForkOnce(SurefireBooter.java:385)
        at org.apache.maven.surefire.booter.SurefireBooter.run(SurefireBooter.java:246)
        at org.apache.maven.plugin.surefire.SurefirePlugin.execute(SurefirePlugin.java:581)
        at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:490)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:694)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:556)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:535)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:387)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:348)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:180)
        at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:328)
        at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:138)
        at org.apache.maven.cli.MavenCli.main(MavenCli.java:362)
        at org.apache.maven.cli.compat.CompatibleMain.main(CompatibleMain.java:60)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
        at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
        at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)
        at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 6 seconds
[INFO] Finished at: Mon Nov 01 08:49:35 PDT 2010
[INFO] Final Memory: 19M/46M
[INFO] ------------------------------------------------------------------------
C:\workspaces\tesla\readiness-mobile\tesla-src-mobile>

And here is the Surefire configuration in the pom.xml:

      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-surefire-plugin</artifactId>
        <version>2.5</version>
        <configuration>
          <additionalClasspathElements>
            <additionalClasspathElement>${resource-bundle-path}</additionalClasspathElement>
          </additionalClasspathElements>
        </configuration>
      </plugin>

I'm thinking this is probably a bug in Maven or Surefire but I can't find any mention of it
on Google.  Has anyone run into this or know what causes it?

Thanks,
Cameron

Cameron Hinkle  |  Senior Application Engineer  |  Nike DCIT  |  503.532.3075  |  7. Evolve
Immediately |


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