Maven Surefire

NPE in org.apache.maven.plugin.surefire.report.AbstractTextReporter

Details

  • Complexity:
    Intermediate
  • Testcase included:
    yes
  • Number of attachments :
    1

Description

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 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:

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)

Note that this issue seems to have been the root cause of SUREFIRE-157; the last comment to that ticket also pointed to the late initialisation of the testResults field.

  1. File
    example.tbz
    06/Mar/12 10:19 AM
    1 kB
    Stephan Schroevers

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Stephan Schroevers added a comment -

Seems I cannot edit the issue. Anyway, I messed up the last link; should have pointed to this comment.

Also, this issue exacerbates JUnit issue 395.

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Stephan Schroevers added a comment - Seems I cannot edit the issue. Anyway, I messed up the last link; should have pointed to this comment. Also, this issue exacerbates JUnit issue 395 .
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Zemian Deng added a comment -

I get this same error intermittently on our java project build. We are using maven-surefire-plugin:2.11 with maven-3.0.4. When this happens our build seems to take same amount of time, but the test counts and output are way off.

Exception in thread "ThreadedStreamConsumer" java.lang.NullPointerException
at org.apache.maven.surefire.report.AbstractFileReporter.testSetCompleted(AbstractFileReporter.java:111)
at org.apache.maven.surefire.report.MulticastingReporter.testSetCompleted(MulticastingReporter.java:51)
at org.apache.maven.surefire.report.TestSetRunListener.testSetCompleted(TestSetRunListener.java:121)
at org.apache.maven.plugin.surefire.booterclient.output.ForkClient.consumeLine(ForkClient.java:97)
at org.apache.maven.plugin.surefire.booterclient.output.ThreadedStreamConsumer$Pumper.run(ThreadedStreamConsumer.java:67)
at java.lang.Thread.run(Thread.java:619)

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Zemian Deng added a comment - I get this same error intermittently on our java project build. We are using maven-surefire-plugin:2.11 with maven-3.0.4. When this happens our build seems to take same amount of time, but the test counts and output are way off. Exception in thread "ThreadedStreamConsumer" java.lang.NullPointerException at org.apache.maven.surefire.report.AbstractFileReporter.testSetCompleted(AbstractFileReporter.java:111) at org.apache.maven.surefire.report.MulticastingReporter.testSetCompleted(MulticastingReporter.java:51) at org.apache.maven.surefire.report.TestSetRunListener.testSetCompleted(TestSetRunListener.java:121) at org.apache.maven.plugin.surefire.booterclient.output.ForkClient.consumeLine(ForkClient.java:97) at org.apache.maven.plugin.surefire.booterclient.output.ThreadedStreamConsumer$Pumper.run(ThreadedStreamConsumer.java:67) at java.lang.Thread.run(Thread.java:619)
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Kristian Rosenvold added a comment -

Fixed in the reporter refactoring in r1374259

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Kristian Rosenvold added a comment - Fixed in the reporter refactoring in r1374259

People

  • Assignee:
    Kristian Rosenvold
    Reporter:
    Stephan Schroevers
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Dates

  • Created:
    Updated:
    Resolved: