java - ant junit task does not report detail

Question

I tried to write an ant with JUnit test, but get below result:

unittest:
    [junit] Running com.mytest.utiltest
    [junit] Tests run: 1, Failures: 0, Errors: 1, Time elapsed: 0 sec
    [junit] Test com.mytest.utiltest FAILED

it just shows error without print details, I specify below parameter in build.xml also tried to start with ant -v or ant -debug, but did not get any luck. Can anyone help?

<junit printsummary="yes" showoutput="true">

ant 1.8.2, sun jdk1.6.0_20, junit 4.8.2

to narrow down the problem, I created a seperate project this is my build.xml

<project name = "TestPrj" default="unittest" basedir = ".">

    <target name="unittest" >
        <junit printsummary="yes" showoutput="true" >
            <classpath>
                <pathelement location="./junit-4.8.2.jar"/>
                <pathelement location="./ant-junit4.jar"/>
            </classpath>
            <test name = "com.mytest.unittest.SimpleTest" todir="."/>
        </junit>
    </target>

</project>

below is simpletest.java

package com.mytest.unittest;

import junit.framework.TestCase;


public class SimpleTest extends TestCase{
    public void testFirst()
    {
        assertTrue(true);
    }

}

C:TestPrj>ant

Buildfile: C:TestPrjuild.xml

unittest:
    [junit] Running com.mytest.unittest.SimpleTest
    [junit] Tests run: 1, Failures: 0, Errors: 0, Time elapsed: 0 sec

BUILD SUCCESSFUL
Total time: 0 seconds

C:TestPrj>dir

 Directory of C:TestPrj

04/02/2011  02:00 PM    <DIR>          .
04/02/2011  02:00 PM    <DIR>          ..
04/02/2011  01:56 PM               280 .classpath
04/02/2011  01:54 PM               519 .project
04/02/2011  02:00 PM             7,120 ant-junit4.jar
04/02/2011  02:00 PM               403 build.xml
04/02/2011  01:55 PM    <DIR>          com
11/17/2010  05:36 PM           237,344 junit-4.8.2.jar
               5 File(s)        245,666 bytes
               3 Dir(s)  28,451,311,616 bytes free

Why there's not a JUnit results/detail/report generated? So that in my real case of failure, i can not troubleshoot my questions?

Answer 1

You have to use a formatter element inside the junit task. The formatter will create a report file by default, but you can force it to print the results on screen. You can use two formatters: one for output to screen, another for output to file.

Note that you no longer need the attributes printsummary="yes" and showoutput="true" in the junit task. The formatter is taking care of output now.

<project name = "TestPrj" default="unittest" basedir = ".">

<target name="unittest" >
    <junit>
        <classpath>
            <pathelement location="./junit-4.8.2.jar"/>
            <pathelement location="./ant-junit4.jar"/>
        </classpath>
        <formatter type="plain" usefile="false" /> <!-- to screen -->
        <formatter type="plain" /> <!-- to file -->
        <test name = "com.mytest.unittest.SimpleTest" todir="."/>
    </junit>
</target>

</project>

Read the junit page in the ant manual for more information.