Most test cases in the attached file show up under package "(root)", which is wrong.

Only tests that have been put under a specific sub-suite will be correctly placed under package "basic". In C++ this is done with macro BOOST_AUTO_TEST_SUITE(xyz) which produces an XML structure of the form TestLog/TestSuite/TestSuite. The first TestSuite level is the automatically generated "package suite". The second is the sub-suite.