This is a testharness.js-based test.
Harness Error. harness_status.status = 1 , harness_status.message = 2 duplicate test names: "XMLHttpRequest: send() - data argument (1 requested with charset=UTF-8)", "XMLHttpRequest: send() - data argument (1=2&3=4 requested with charset=UTF-8)"
Harness: the test ran to completion.