anchor.diff:                                                startPosition,
                                                 endPosition - startPosition);
               if (_failed) {
  -              printDebug("Failed because command.expectedOutputFile doesn't "
  -                         "match stdout of DRT");
  +              printDebug("Test failure because command.expectedOutputFile "
  +                         "doesn't match stdout of DRT");
               }
               return _failed;
             }
           }
  -        printDebug("Failed because we didn't find 'Content-Length' in the DRT "
  -                   "output");
  +        printDebug("Test failure because we didn't find 'Content-Length' in the"
  +                   " DRT output");
           return true;
         } else {
           var _failed = !areByteArraysEqual(expectedContent, 0,
                                             stdout, 0,
                                             stdout.length);
           if (_failed) {
  -          printDebug("Failed because command.expectedOutputFile doesn't match "
  -                     "stdout of DRT");
  +          printDebug("Test failure because command.expectedOutputFile doesn't "
  +                     "match stdout of DRT");
           }
           return _failed;
         }
       }
  -    printDebug("Failed because command.expectedOutputFile doesn't exist");
  +    printDebug("Test failure because command.expectedOutputFile doesn't exist");
       return true;
     }
   
  
positive.code:     arguments.add(htmlFile);
      return arguments;
    }
    
    Path get expectedOutputFile => expectedOutputPath;
    bool get isPixelTest => (expectedOutputFile != null &&
                             expectedOutputFile.filename.endsWith(".png"));
  
negative.code:           if (has_content_type) {
              var _failed = (exitCode != 0 && !hasCrashed);
              if (_failed) {
                printDebug("Test failure because '(exitCode != 0 && !hasCrashed) "
                           "was true");
              }
              return _failed;
            }
            break;
        }
      }
      printDebug("Test failure because content-type: text/plain + PASS was not "
                 "found");
      return true;
    }
  
  