def METHOD_NAME(self):
    self.file_1 = open(self.has_tags, 'rb')
    self.riff_1 = RiffFile(self.file_1)
    self.file_2 = open(self.no_tags, 'rb')
    self.riff_2 = RiffFile(self.file_2)
    self.tmp_1_name = get_temp_copy(self.has_tags)
    self.file_1_tmp = open(self.tmp_1_name, 'rb+')
    self.riff_1_tmp = RiffFile(self.file_1_tmp)
    self.tmp_2_name = get_temp_copy(self.no_tags)
    self.file_2_tmp = open(self.tmp_2_name, 'rb+')
    self.riff_2_tmp = RiffFile(self.file_2_tmp)