Databases
StackOverflow2013
Postsdbo
POAnt JUnit task NoClassDefFoundError when run in existing JVM
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POAnt JUnit task NoClassDefFoundError when run in existing JVM
    primarykey
    data
    text
    <p>I went for the <strong>JUnit Ant task</strong> solution where I provide the <strong>JUnit library</strong> through the task's element:</p> <pre><code>&lt;target name="test" depends="compile-tests" description="Run unit tests"&gt; &lt;junit printsummary="true" haltonfailure="true"&gt; &lt;classpath refid="test.classpath" /&gt; &lt;test name="com.package.TestClass" /&gt; &lt;/junit&gt; &lt;/target&gt; </code></pre> <p>The important classpaths used are:</p> <pre><code>&lt;path id="test.compile.classpath"&gt; &lt;path refid="compile.classpath" /&gt; &lt;path refid="test.lib.classpath" /&gt; &lt;pathelement location="${build.classes.dir}" /&gt; &lt;/path&gt; &lt;path id="test.classpath"&gt; &lt;path refid="test.compile.classpath" /&gt; &lt;pathelement path="${test.classes.dir}" /&gt; &lt;/path&gt; </code></pre> <p>And the referenced one with the junit.jar is an <strong>Ant Maven task</strong>:</p> <pre><code>&lt;artifact:dependencies pathId="test.lib.classpath"&gt; &lt;dependency groupId="junit" artifactId="junit" version="4.11" /&gt; &lt;/artifact:dependencies&gt; </code></pre> <p>Now, the problem is that I get an exception when running this task:</p> <pre><code>java.lang.NoClassDefFoundError: junit/framework/TestListener </code></pre> <p>The solution is adding the <strong>fork="true"</strong> attribute to the task:</p> <pre><code>&lt;junit printsummary="true" haltonfailure="true" fork="true"&gt; </code></pre> <p>My questions are:</p> <ul> <li>Why without running a new JVM instance does the JUnit Ant task fail to include the junit.jar in the runtime?</li> <li>And what is this runtime actually? Is it the one executing the Ant script? Is attaching a jar to the runtime impossible? I thought it would be standard class loading.</li> </ul>
    singulars
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. This table or related slice is empty.
    1. USchemical
    plurals
    1. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. COAre you using Ant 1.9.0, by chance? Take a look at [Bamboo Ant Task fails when running junit task](http://stackoverflow.com/a/16490171/1078068).
      singulars
      1. POAnt JUnit task NoClassDefFoundError when run in existing JVM
      1. USChad Nouis
    2. COThanks for referring this. I found out the answer myself, which is that the classpath task is not adding the new path to the classloader and the already running JVM can't find the specified jar. And yes, I am using Ant 1.9. If you'd like please extract your comment to an answer containing this information and I'll happily accept it.
      singulars
      1. POAnt JUnit task NoClassDefFoundError when run in existing JVM
      1. USchemical
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload