build.xml

<project name="EightPuzzle" default="spock" basedir=".">

  <path id="srcpath">
	<pathelement location="src" />
	<pathelement location="spock" />
  </path>
    
  <path id="project.classpath">
    <fileset dir="lib">
      <include name="*.jar" />
    </fileset>
  </path>
  
  <taskdef name="groovyc" classname="org.codehaus.groovy.ant.Groovyc" classpathref="project.classpath" />
  <target name="spock">
    <property name="tests.build" value="build" />
    <property name="tests.classes" value="${tests.build}/classes" />
    <property name="spock.reports" value="${tests.build}/spock-reports" />
    <delete dir="${tests.build}" />
    <mkdir dir="${tests.classes}" />
    <mkdir dir="${spock.reports}" />
    
    <groovyc destdir="${tests.classes}">
        <classpath refid="project.classpath" />
        <src path="src" />
        <src path="spock" />
		<include name="**/*.java" />
		<include name="**/*.groovy" />
		<javac source="1.7" target="1.7" debug="on" />
    </groovyc>
    
    <groovyc srcdir="spock" destdir="${tests.classes}" classpathref="project.classpath" />
    
    <junit failureproperty="test.failure" >
      <formatter type="plain"  />
      <classpath path="${tests.classes}" />
      <classpath refid="project.classpath" />
      <batchtest fork="yes" todir="${spock.reports}" >
        <fileset dir="${tests.classes}">
          <include name="**/*Tests.class" />
        </fileset>
      </batchtest>
    </junit>
    
    <fail message="Tests failed" if="test.failure" />
  </target>
</project>