This is a testharness.js-based test.
PASS Test the initial effect of setting playbackRate on currentTime 
PASS Test the effect of setting playbackRate on currentTime 
FAIL Test the effect of setting playbackRate while playing animation assert_approx_equals: animation.currentTime should be the same speed as timeline now. expected 3.189999999904103 +/- 0.001 but got 0
Harness: the test ran to completion.

