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// Used in trigger-scope-* tests to check whether an animation was triggered or
// not.
async function assert_playstate_and_current_time(target_id, animation, play_state) {
// The animation might start on a different user-agent thread and need
// a moment to get currentTime up to date.
await waitForCompositorReady();
assert_equals(animation.playState, play_state,
`animation on ${target_id} is ${play_state}.`);
if (play_state === "running") {
assert_greater_than(animation.currentTime, 0,
`animation on ${target_id} has currentTime > 0.`);
} else {
assert_equals(animation.currentTime, 0,
`animation on ${target_id} has currentTime == 0.`);
}
}