Heh yeah but it can be used to write tests that check your assumptions about a 3 party api. Granted, It'll only fail once the test are rerun without the cache,

Heh yeah but it can be used to write tests that check your assumptions about a 3 party api. Granted, It'll only fail once the test are rerun without the cache, but it can still be a valuable technique. It can be valuable to have a testsuite that a) helps check assumptions when implementing the connection and b) helps locate what part of it later starts to behave unexpectedly.