Ant & JUnit java.lang.NullPointerException

Discussion in 'Java' started by lionelv@gmail.com, Nov 11, 2007.

  1. Guest

    I'm migrating from Netbeans to setup all of my compiling, packaging
    and testing. However, I'm having troubles getting the testing part
    working. Here's the snippet of code I'm currently using:

    <property name="src" value="src"/>
    <property name="lib" value="lib"/>
    <property name="build" value="build"/>
    <property name="dist" value="dist"/>
    <property name="dist-lib" value="${dist}/lib"/>
    <property name="src.lib.runtime" value="${lib}/runtime"/>
    <property name="classes" value="${build}/classes/"/>
    <property name="jar.executable" value="${dist}/$
    {ant.project.name}.jar"/>
    <property name="test.src" value="test"/>
    <property name="test.execute" value="${build}/test"/>
    <property name="test.reports" value="${test.execute}/reports"/>

    <!-- Runs the JUnit Tests -->
    <target name="test">
    <mkdir dir="${test.reports}"/>
    <copy todir="${test.execute}">
    <fileset dir="${src}"/>
    </copy>
    <copy todir="${test.execute}">
    <fileset dir="${test.src}"/>
    </copy>
    <javac srcdir="${test.execute}"
    classpath="${classpath}"
    debug="true"
    source="1.5"
    />
    <junit dir="${test.execute}">
    <test name="tciworks.analysis.BayesianTest"/>
    </junit>
    <!--junit printsummary="yes">
    <formatter type="plain"/>
    <batchtest fork="yes" todir="${test.reports}">
    <fileset dir="${test.execute}}">
    <include name="**/*Test*.java"/>
    </fileset>
    </batchtest>
    </junit-->
    </target>

    Code being tested is in ${src}
    Test cases are in ${test.src}.
    All of the source is copied to ${test.execute} and compiled there.

    When I try to test I get the following (trimmed) error:

    Apache Ant version 1.7.0 compiled on December 13 2006
    Buildfile: build.xml
    Detected Java version: 1.5 in: c:\Program Files\Java\jdk1.5.0_06\jre
    Detected OS: Windows XP
    [antlib:eek:rg.apache.tools.ant] Could not load definitions from resource
    org/apache/tools/ant/antlib.xml. It could not be found.
    [snip]
    test:
    [mkdir] Skipping c:\TCIWorks\TCIWorksApplication\build\test
    \reports because it already exists.
    [copy] tciworks\TCIWorks.java omitted as c:\TCIWorks
    \TCIWorksApplication\build\test\tciworks\TCIWorks.java is up to date.
    [copy] tciworks\UpdateManager.java omitted as c:\TCIWorks
    \TCIWorksApplication\build\test\tciworks\UpdateManager.java is up to
    date.
    [copy] tciworks\analysis\AbstractObjective.java omitted as c:
    \TCIWorks\TCIWorksApplication\build\test\tciworks\analysis
    \AbstractObjective.java is up to date.
    [snip]
    [javac] tciworks\util\TCIFigures.java omitted as c:\TCIWorks
    \TCIWorksApplication\build\test\tciworks\util\TCIFigures.class is up
    to date.
    [javac] tciworks\util\TCISwingWorker.class skipped - don't know
    how to handle it
    [javac] tciworks\util\TCISwingWorker.java omitted as c:\TCIWorks
    \TCIWorksApplication\build\test\tciworks\util\TCISwingWorker.class is
    up to date.
    [javac] tciworks\util\TCIWorksConstants.class skipped - don't know
    how to handle it
    [javac] tciworks\util\TCIWorksConstants.java omitted as c:\TCIWorks
    \TCIWorksApplication\build\test\tciworks\util\TCIWorksConstants.class
    is up to date.

    BUILD FAILED
    c:\TCIWorks\TCIWorksApplication\build.xml:134:
    java.lang.NullPointerException
    at
    org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:
    115)
    at org.apache.tools.ant.Task.perform(Task.java:348)
    at org.apache.tools.ant.Target.execute(Target.java:357)
    at org.apache.tools.ant.Target.performTasks(Target.java:385)
    at org.apache.tools.ant.Project.executeSortedTargets(Project.java:
    1329)
    at org.apache.tools.ant.Project.executeTarget(Project.java:1298)
    at
    org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:
    41)
    at org.apache.tools.ant.Project.executeTargets(Project.java:1181)
    at org.apache.tools.ant.Main.runBuild(Main.java:698)
    at org.apache.tools.ant.Main.startAnt(Main.java:199)
    at org.apache.tools.ant.launch.Launcher.run(Launcher.java:257)
    at org.apache.tools.ant.launch.Launcher.main(Launcher.java:104)
    Caused by: java.lang.NullPointerException
    at org.apache.tools.ant.types.Path.add(Path.java:261)
    at
    org.apache.tools.ant.taskdefs.optional.junit.JUnitTask.execute(JUnitTask.java:
    753)
    at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:
    288)
    at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
    at
    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:
    25)
    at java.lang.reflect.Method.invoke(Method.java:585)
    at
    org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:
    105)
    ... 11 more
    --- Nested Exception ---
    java.lang.NullPointerException
    at org.apache.tools.ant.types.Path.add(Path.java:261)
    at
    org.apache.tools.ant.taskdefs.optional.junit.JUnitTask.execute(JUnitTask.java:
    753)
    at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:
    288)
     
    , Nov 11, 2007
    #1
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  2. wrote:
    > I'm migrating from Netbeans to setup all of my compiling, packaging
    > and testing. However, I'm having troubles getting the testing part
    > working. Here's the snippet of code I'm currently using:


    > <junit dir="${test.execute}">
    > <test name="tciworks.analysis.BayesianTest"/>
    > </junit>
    > <!--junit printsummary="yes">
    > <formatter type="plain"/>
    > <batchtest fork="yes" todir="${test.reports}">
    > <fileset dir="${test.execute}}">
    > <include name="**/*Test*.java"/>
    > </fileset>
    > </batchtest>
    > </junit-->
    > </target>
    >
    > Code being tested is in ${src}
    > Test cases are in ${test.src}.
    > All of the source is copied to ${test.execute} and compiled there.
    >
    > When I try to test I get the following (trimmed) error:
    >
    > Apache Ant version 1.7.0 compiled on December 13 2006
    > Buildfile: build.xml
    > Detected Java version: 1.5 in: c:\Program Files\Java\jdk1.5.0_06\jre
    > Detected OS: Windows XP


    > Caused by: java.lang.NullPointerException
    > at org.apache.tools.ant.types.Path.add(Path.java:261)


    Very hard to say without having the code to play with.

    You could try replace:

    <junit dir="${test.execute}">

    with:

    <junit fork="on" dir="${test.execute}">

    because I have often had problems without that.

    Arne
     
    =?ISO-8859-1?Q?Arne_Vajh=F8j?=, Nov 12, 2007
    #2
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