src/etc/testcases/taskdefs/presetdef.xml

<project>
  <path id="test-classes">
    <pathelement location="../../../../build/testcases" />
    <pathelement path="${java.class.path}" />
  </path>
  
  <target name="simple">
    <presetdef name="my.echo">
      <echo message="Hello world"/>
    </presetdef>
    <my.echo/>
  </target>

  <target name="text">
    <presetdef name="my.echo">
      <echo>Inner Text</echo>
    </presetdef>
    <my.echo/>
  </target>

  <target name="uri">
    <presetdef name="echo" uri="abc">
      <echo message="Hello world"/>
    </presetdef>
    <x:echo xmlns:x="abc"/>
  </target>

  <target name="defaulttest">
    <taskdef name="defaulttest"
             classname="org.apache.tools.ant.taskdefs.PreSetDefTest$DefaultTest"
             classpathref="test-classes"/>
    <presetdef name="d">
      <defaulttest attribute="true"/>
    </presetdef>
    <d attribute="false"/>
  </target>

  <target name="doubledefault">
    <taskdef name="defaulttest"
             classname="org.apache.tools.ant.taskdefs.PreSetDefTest$DefaultTest"
             classpathref="test-classes"/>
    <presetdef name="d">
      <defaulttest attribute="true"/>
    </presetdef>
    <presetdef name="dd">
      <d attribute="false"/>
    </presetdef>
    <dd/>
    <dd attribute="true"/>
  </target>

  <target name="text.optional">
    <presetdef name="echo.mytext">
      <echo>MyText</echo>
    </presetdef>
    <echo.mytext/>
    <echo.mytext>override text</echo.mytext>
  </target>

  <target name="element.order">
    <presetdef name="el.order">
      <sequential>
        <echo>Line 1</echo>
      </sequential>
    </presetdef>
    <el.order>
      <echo>Line 2</echo>
    </el.order>
  </target>

  <target name="element.order2">
    <presetdef name="el.order">
      <sequential>
        <echo>Line 1</echo>
      </sequential>
    </presetdef>
    <presetdef name="el.order2">
      <el.order>
        <echo>Line 2</echo>
      </el.order>
    </presetdef>
    <el.order2>
      <echo>Line 3</echo>
    </el.order2>
  </target>

</project>