Today for testing, I need to create a junit test case xml file. Here is the sample which helps to create this failure xml.
<testsuite tests="3">
<testcase classname="foo1" name="ASuccessfulTest"/>
<testcase classname="foo2" name="AnotherSuccessfulTest"/>
<testcase classname="foo3" name="AFailingTest">
<failure type="NotEnoughFoo"> details about failure </failure>
</testcase>
</testsuite>
This helps me to create a test.xml file having a failure in test case.