[cancel-watch-availability.html]
  expected:
    if os == "mac": [OK, TIMEOUT]
  [Test that calling cancelWatchAvailability() without an id removes all the callbacks, and calling cancelWatchAvailability() with a removed id throws NotFoundError.]
    expected: FAIL

  [Test that calling cancelWatchAvailability() with an id does remove the callback, and calling cancelWatchAvailability with a removed id throws NotFoundError.]
    expected: FAIL