ant/src/etc/testcases/taskdefs/conditions/antversion.xml

<?xml version="1.0" encoding="utf-8"?>
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<project name="testantversion" default="testatleast">

        <target name="testatleast">
                <fail>
                        <condition>
                                <not>
                                        <antversion atleast="1.7" />
                                </not>
                        </condition>
                Should be at least 1.7
        </fail>
        </target>

        <target name="testexactly">
                <fail>
                        <condition>
                                <not>
                                        <antversion exactly="1.9.7" />
                                </not>
                        </condition>
                        Should be exactly 1.9.7

                </fail>
        </target>

        <target name="testatleastfail">
                <property name="version" value="1.8.9" />
                <fail>
                        <condition>
                                <not>
                                        <antversion atleast="1.9.7" />
                                </not>
                        </condition>
                Should be at least 1.9.7
                </fail>
        </target>

        <target name="testexactlyfail">
                <property name="version" value="1.8.0" />
                <fail>
                        <condition>
                                <not>
                                        <antversion exactly="1.9.7" />
                                </not>
                        </condition>
                  Should be exactly 1.9.7
                </fail>
        </target>
</project>