JUnit test results with a null classname are not correctly handled

Summary

Bamboo test results show unexpected results when testcase classpath is null

Steps to Reproduce

1. Create a build that parses the following test file

   <testsuite errors="0" failures="0" name="name" skips="0" tests="2" time="0.2">
     <testcase classname="classname" file="file" line="1" name="test_class" time="0.1"/>
     <testcase classname="" file="test" line="1" name="test_class" time="0.1"/>
   </testsuite>
   

2. Run the build and check the results

Expected Results

Bamboo will show the two tests as expected in <Bamboo_URL>/browse/PLAN-KEY-XXX/test and <Bamboo_URL>/browse/PLAN-KEY-XXX/test/case/0 .

Actual Results

The page <Bamboo_URL>/browse/PLAN-KEY-XXX/test will not show the correct total number for tests:

The page <Bamboo_URL>/browse/PLAN-KEY-XXX/test/case/0 will show an unespected error: