Test team declines after success (7)

I believe the answer is:
windies
'test team' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.
'declines after success' is the wordplay.
'declines' becomes 'dies' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'after' means one lot of letters go next to another.
'success' becomes 'win' (I've seen this in another clue).
'dies' after 'win' is 'WINDIES'.
Can you help me to learn more?
I've seen this clue in The Times.
Want a hint initially instead of a full solution?
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