src/tests/antunit/taskdefs/condition/javaversion-test.xml

<?xml version="1.0"?>
<!--
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  contributor license agreements.  See the NOTICE file distributed with
  this work for additional information regarding copyright ownership.
  The ASF licenses this file to You under the Apache License, Version 2.0
  (the "License"); you may not use this file except in compliance with
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<project name="javaversion-test" default="antunit" xmlns:au="antlib:org.apache.ant.antunit">
  <import file="../../antunit-base.xml" />

  <target name="test-atleast">
    <au:assertTrue message="Expected javaversion of ${ant.version} to be at least 1.7.0">
      <!-- Ant 1.9.x requires Java5 at runtime - so this must be true -->
      <javaversion atleast="1.5" />
    </au:assertTrue>
  </target>

  <target name="test-exactly">
    <au:assertTrue message="Expected javaversion of ${ant.java.version}">
      <javaversion exactly="${ant.java.version}" />
    </au:assertTrue>
  </target>

  <target name="test-atleast-fail">
    <au:assertFalse>
      <javaversion atleast="1000.0" />
    </au:assertFalse>
  </target>

</project>