Correct tests argument passing and assertions.

While it previously passed, it was asserting a confusing thing,
and not the thing it looked like it asserted.

Change-Id: I199e74909290831a4f195496ea41357d1c52b3b8
Fix handling delay data from redis.

Snice we're not requesting the scores, we don't get back tuples, so
don't index the result. Do convert it to an int, however.

Change-Id: Iba014d7d034010b13da141493211601453fb0aed
Cleaner output from tests.

Change-Id: I2b470a916d3fdd13a6feacdb1acec52f3f55663a
Add system testing of the delay support.

Change-Id: I80e3f782ce4f3021c5cb7c2b19bd3630efeb018c