Junit report does not generate report if there is an approval error

Junit report does not generate a report if there is an approval error Class for testing

public class Math {

    static public int add(int a, int b) {

        return a + b;
    }

    static public int multiply ( int a, int b) {
        if(a==0&&b==0)
            return 0;;
        return a * b;
    }
}

Junit Testing Class

import junit.framework.*;

public class TestMath extends TestCase { 

  protected void setUp() { 

    // put common setup code in here
   }

  protected void tearDown() {

    // put common cleanup code in here
  }

  public void testAdd() {
    int num1 = 3;
    int num2 = 2;
    int total = 5;
    int sum = 0;
    sum = Math.add(num1, num2);
    assertEquals(sum, total);
  }

  public void testMulitply() {

    int num1 = 3; 
    int num2 = 7; 
    int total = 21;
    int sum = 0;
    sum = Math.multiply(num1, num2);
    assertEquals("Problem with multiply", sum, total);


    num1 = 5;
    num2 = 4;
    total = 20;
    sum = Math.multiply(num1, num2);
    assertEquals("Problem with multiply", sum, total);

  }
  public void testv(){
     Assert.assertEquals(1, Math.multiply(0, 0));
  }

}

I am using junit report to create reports

The problem is that if the statement prevents reports from being generated, Ant Build crashes. The assumed value of MY is that if the statement fails, it should be indicated in failures, and not as a result of a build error.

Ant XML

<project name="SampleJUnitTests" default="dist" basedir=".">
    <description>
        Sample JUnit Tests
    </description>
  <!-- set global properties for this build -->

  <property name="project_name" value="junitSamples"/>
  <property name="src" location="src"/>
  <property name="build" location="bin"/>
  <property name="dist"  location="dist"/>
  <property name="lib"  location="lib"/>
  <property name="res"  location="res"/>
  <property name="reports" location="reports"/>

  <!-- the names of various distributable files -->
  <property name="jar_name" value="${project_name}.jar"/>
  <property name="war_name" value="${project_name}.war"/>

    <!-- top level targets -->

  <target name="compile" depends="init" description="compile the source code " >
        <javac srcdir="${src}" destdir="${build}">  
            <classpath>
                <fileset dir="lib">
                    <include name="**/*.jar"/>
                </fileset>
            </classpath>
        </javac>

  </target>

  <target name="dist" depends="compile" description="generate the distributable files " >

    <!-- Put everything in ${build} into the MyProject-${DSTAMP}.jar file -->
    <jar jarfile="${dist}/${jar_name}" basedir="${build}"/>

  </target>

  <target name="clean"
        description="clean up" >
    <!-- Delete the ${build} and ${dist} directory trees -->
    <delete dir="${build}"/>
    <delete dir="${dist}"/>
    <delete dir="${reports}"/>
  </target>

    <target name="run-tests" depends="compile" description="run your test suite" >
        <junit printsummary="yes" haltonfailure="yes" showoutput="yes" >
            <classpath>
                <pathelement path="${build}"/>
                <fileset dir="lib">
                    <include name="**/*.jar"/>
                </fileset>
            </classpath>            

          <batchtest fork="yes" todir="${reports}/raw/">
            <formatter type="xml"/>
            <fileset dir="${src}">
              <include name="**/*Test*.java"/>
            </fileset>
          </batchtest>
        </junit>    
    </target>

  <target name ="test" depends="run-tests">
        <junitreport todir="${reports}">
          <fileset dir="${reports}/raw/">
            <include name="TEST-*.xml"/>
          </fileset>
          <report format="frames" todir="${reports}/html/"/>
        </junitreport>
  </target>

  <target name ="run" depends="" description="if this project can be run, run it" >

  </target>

    <!-- supporting targets -->

     <target name="init" description="initialize the build environment" >
    <!-- Create the time stamp -->
    <tstamp/>
    <!-- Create directory structures -->
    <mkdir dir="${build}"/>
    <mkdir dir="${lib}"/>
    <mkdir dir="${dist}/lib"/>
    <mkdir dir="${reports}"/>
    <mkdir dir="${reports}/raw/"/>
    <mkdir dir="${reports}/html/"/>
  </target>

  <target name="all" depends="clean, test">

  </target>

</project>

MY requirement - if the statement does not work, should it show up on error? What do I need to do?