if we need to sort the channels in an alphabetical order, than we do not need sort it bind ASCII, but bind to alphabetical
Than Error message is wrong:

Expected: { '0': 'BBC Sport',
'1': 'BBC1',
'2': 'CNBC',
'3': 'Channel 4',
'4': 'Discovery',
'5': 'Drama',
'6': 'Film 4',
'7': 'Film 5',
'8': 'Food Network',
'9': 'National Geographic',
'10': 'Sky Sport',
'11': 'SyFy' }, instead got: { '0': 'BBC Sport',
'1': 'BBC1',
'2': 'Channel 4',
'3': 'CNBC',
'4': 'Discovery',
'5': 'Drama',
'6': 'Film 4',
'7': 'Film 5',
'8': 'Food Network',
'9': 'National Geographic',
'10': 'Sky Sport',
'11': 'SyFy' }

Because, char 'h' have to stay first before char 'N' in an alphabetical order