The formatter named failure collects all failing testXXX()
+methods and creates a new TestCase which delegates only these
+failing methods. The name and the location can be specified via Java System property
+ant.junit.failureCollector. The value has to point to the directory and
+the name of the resulting class (without suffix). It defaults to java-tmp-dir/FailedTests.
Note: Please read the Ant FAQ if you want to
set the fork attribute to true, the includeAntRuntime
@@ -616,6 +622,50 @@ aborted. Results are collected in files named
TEST-name.txt and written to
${reports.tests}.
+<target name="test">
+ <property name="collector.dir" value="${build.dir}/failingTests"/>
+ <property name="collector.class" value="FailedTests"/>
+ <!-- Delete 'old' collector classes -->
+ <delete>
+ <fileset dir="${collector.dir}" includes="${collector.class}*.class"/>
+ </delete>
+ <!-- compile the FailedTests class if present -->
+ <javac srcdir="${collector.dir}" destdir="${collector.dir}"/>
+ <available file="${collector.dir}/${collector.class}.class" property="hasFailingTests"/>
+ <junit haltonerror="false" haltonfailure="false">
+ <sysproperty key="ant.junit.failureCollector" value="${collector.dir}/${collector.class}"/>
+ <classpath>
+ <pathelement location="${collector.dir}"/>
+ </classpath>
+ <batchtest todir="${collector.dir}" unless="hasFailingTests">
+ <fileset dir="${collector.dir}" includes="**/*.java" excludes="**/${collector.class}.*"/>
+ <!-- for initial creation of the FailingTests.java -->
+ <formatter type="failure"/>
+ <!-- I want to see something ... -->
+ <formatter type="plain" usefile="false"/>
+ </batchtest>
+ <test name="FailedTests" if="hasFailingTests">
+ <!-- update the FailingTests.java -->
+ <formatter type="failure"/>
+ <!-- again, I want to see something -->
+ <formatter type="plain" usefile="false"/>
+ </test>
+ </junit>
+</target>
+
+On the first run all tests are collected via the <batchtest/>
+element. It's plain formatter shows the output on the console. The
+failure formatter creates a java source file in
+${build.dir}/failingTests/FailedTests.java which extends
+junit.framework.TestCase and returns from a suite()
+method a test suite for the failing tests.
+On a second run the collector class exists and instead of the <batchtest/>
+the single <test/> will run. So only the failing test cases are re-run.
+The two nested formatters are for displaying (for the user) and for updating the collector
+class.
+