def test_success_junit_xml(test_name):
    """
    Generate JUnit XML file for a unary test suite where the test succeeded.
    
    @param test_name: Name of test that passed
    @type  test_name: str
    """
    return (
        """<?xml version="1.0" encoding="UTF-8"?>
<testsuite tests="1" failures="0" time="1" errors="0" name="%s">
  <testcase name="test_ran" status="run" time="1" classname="Results">
  </testcase>
</testsuite>"""
         % test_name)
