This is a testharness.js-based test.
[FAIL] Active -> Idle, setting Animation.timeline = null
  assert_approx_equals: expected 0.1 +/- 0.0005 but got 0
[FAIL] The cancel event with an earlier position in animation list should be fired earlier
  assert_equals: expected "anim" but got "anim2"
Harness: the test ran to completion.