Made the tests for output a little more meaningful by checking for one message per file, with detail messages for each link in that file.
Made the tests for output a little more meaningful by checking for one message per file, with detail messages for each link in that file.

armiller/link-checker,endymion/link-checker,endymion/link-checker,endymion/link-checker,endymion/link-checker,armiller/link-checker,armiller/link-checker,armiller/link-checker