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From "Stephan Schroevers (JIRA)" <j...@codehaus.org>
Subject [jira] (SUREFIRE-848) NPE in org.apache.maven.plugin.surefire.report.AbstractTextReporter
Date Tue, 06 Mar 2012 16:20:03 GMT
Stephan Schroevers created SUREFIRE-848:
-------------------------------------------

             Summary: NPE in org.apache.maven.plugin.surefire.report.AbstractTextReporter
                 Key: SUREFIRE-848
                 URL: https://jira.codehaus.org/browse/SUREFIRE-848
             Project: Maven Surefire
          Issue Type: Bug
          Components: Junit 4.x support, Maven Surefire Plugin
    Affects Versions: 2.12
            Reporter: Stephan Schroevers
         Attachments: example.tbz

The combination Surefire/JUnit 4 causes a {{NullPointerException}} in {{org.apache.maven.plugin.surefire.report.AbstractTextReporter}}
if one has a  {{RunListener}} configured which (for whatever reason) throws an exception in
its {{#testRunStarted(Description)}} method.

I have [attached|^example.tbz] a dummy project; run {{`mvn test`}} to see the problem. The
cause of this issue is that {{AbstractTextReporter}} initializes its {{testResults}} field
when {{AbstractTextReporter#testSetStarting(ReportEntry)}} is called, which (it seems) doesn't
happen until JUnit invokes {{RunNotifier#fireTestStarted(Description)}}. This is too late,
because an exception during the invocation of {{RunNotifier#fireTestRunStarted(Description)}}
causes {{AbstractTextReporter#testError(ReportEntry, String, String)}} to be invoked. The
result is an NPE on line 103.

Stacktrace:
{noformat}
Exception in thread "ThreadedStreamConsumer" java.lang.NullPointerException
	at org.apache.maven.plugin.surefire.report.AbstractTextReporter.testError(AbstractTextReporter.java:103)
	at org.apache.maven.plugin.surefire.report.MulticastingReporter.testError(MulticastingReporter.java:87)
	at org.apache.maven.plugin.surefire.report.TestSetRunListener.testError(TestSetRunListener.java:150)
	at org.apache.maven.plugin.surefire.booterclient.output.ForkClient.consumeLine(ForkClient.java:115)
	at org.apache.maven.plugin.surefire.booterclient.output.ThreadedStreamConsumer$Pumper.run(ThreadedStreamConsumer.java:67)
	at java.lang.Thread.run(Thread.java:619)
{noformat}

Note that this issue seems to have been the root cause of SUREFIRE-157; the [last comment|jira.codehaus.org/browse/SUREFIRE-157?focusedCommentId=197215#comment-197215]
to that ticket also pointed to the late initialisation of the {{testResults}} field.

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