anchor.diff:      var result = <List<String>>[];
       List<String> dartOptions;
       List<String> sharedOptions;
  +    Map<String, String> environment;
       String packageRoot;
       String packages;
   
  
positive.code:             'More than one "// SharedOptions=" line in test $filePath');
        }
        sharedOptions = match[1].split(' ').where((e) => e != '').toList();
      }
  
      matches = packageRootRegExp.allMatches(contents);
  
negative.code:             args,
              compilationArtifact);
  
      Map<String, String> environment = environmentOverrides;
      Map<String, String> extraEnv = info.optionsFromFile['environment'];
      if (extraEnv != null) {
        environment = new Map.from(environment)..addAll(extraEnv);
      }
  
      return commands
        ..addAll(configuration.runtimeConfiguration.computeRuntimeCommands(
            this, compilationArtifact, runtimeArguments, environment));
    }
  
    CreateTest makeTestCaseCreator(Map<String, dynamic> optionsFromFile) {
  