src/tests/antunit/core/extension-point-test.xml

<?xml version="1.0"?>
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<project xmlns:au="antlib:org.apache.ant.antunit" default="antunit">

  <import file="../antunit-base.xml"/>

  <extension-point name="testExtensionPointWorksLikeTarget"
                depends="setProperty, assertProperty"/>

  <target name="setProperty">
    <property name="foo" value="bar"/>
  </target>

  <target name="assertProperty">
    <au:assertPropertyEquals name="foo" value="bar"/>
  </target>

  <target name="testExtensionPointMustBeEmpty">
    <mkdir dir="${output}"/>
    <echo file="${output}/build.xml"><![CDATA[
<project>
  <extension-point name="foo">
    <echo>bar</echo>
  </extension-point>
</project>]]></echo>
    <au:expectfailure
       expectedMessage="you must not nest child elements into an extension-point">
      <ant dir="${output}"/>
    </au:expectfailure>
  </target>

  <target name="testAddToExtensionPoint">
    <mkdir dir="${output}"/>
    <echo file="${output}/build.xml"><![CDATA[
<project default="foo">
  <extension-point name="foo"/>
  <target name="bar" extensionOf="foo">
    <echo>In target bar</echo>
  </target>
</project>]]></echo>
    <ant dir="${output}"/>
    <au:assertLogContains text="In target bar"/>
  </target>

  <target name="testCantAddToPlainTarget">
    <mkdir dir="${output}"/>
    <echo file="${output}/build.xml"><![CDATA[
<project default="foo">
  <target name="foo"/>
  <target name="bar" extensionOf="foo"/>
</project>]]></echo>
    <au:expectfailure
       expectedMessage="referenced target foo is not an extension-point">
      <ant dir="${output}"/>
    </au:expectfailure>
  </target>

  <target name="testExtensionPointInImportedBuildfile" description="Bug 48804">
    <mkdir dir="${output}"/>
    <echo file="${output}/master.xml"><![CDATA[
<project default="bar">
  <extension-point name="foo"/>
  <target name="bar" depends="foo"/>
</project>]]></echo>
    <echo file="${output}/build.xml"><![CDATA[
<project>
  <import file="master.xml"/>
  <target name="prepare" extensionOf="foo">
    <echo>in target prepare</echo>
  </target>
</project>]]></echo>
    <ant dir="${output}" target="bar"/>
    <au:assertLogContains text="in target prepare"/>
  </target>

</project>