Re: Ant & JUnit java.lang.NullPointerException

From:

=?ISO-8859-1?Q?Arne_Vajh=F8j?= <arne@vajhoej.dk>

Newsgroups:

comp.lang.java.programmer

Date:

Sun, 11 Nov 2007 21:32:24 -0500

Message-ID:

<4737bb33$0$90265$14726298@news.sunsite.dk>

lionelv@gmail.com 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>
        
    </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