1 files changed, 34 insertions, 0 deletions
diff --git a/devtools/client/inspector/animation/test/browser_animation_current-time-scrubber_each-different-creation-time-animations.js b/devtools/client/inspector/animation/test/browser_animation_current-time-scrubber_each-different-creation-time-animations.js
new file mode 100644
index 0000000000..85373b3295
--- /dev/null
+++ b/devtools/client/inspector/animation/test/browser_animation_current-time-scrubber_each-different-creation-time-animations.js
@@ -0,0 +1,34 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Test whether proper currentTime was set for each animations.
+
+const WAIT_TIME = 3000;
+
+add_task(async function () {
+  await addTab(URL_ROOT + "doc_simple_animation.html");
+  await removeAnimatedElementsExcept([".animated", ".still"]);
+  const { animationInspector, panel } = await openAnimationInspector();
+
+  info(
+    "Add an animation to make a situation which has different creation time"
+  );
+  await wait(WAIT_TIME);
+  await setClassAttribute(animationInspector, ".still", "ball compositor-all");
+  await waitUntil(() => panel.querySelectorAll(".animation-item").length === 2);
+
+  info("Move the scrubber");
+  clickOnCurrentTimeScrubberController(animationInspector, panel, 0.5);
+  await waitUntilAnimationsPlayState(animationInspector, "paused");
+
+  info("Check existed animations have different currentTime");
+  const animations = animationInspector.state.animations;
+  ok(
+    animations[0].state.currentTime + WAIT_TIME >
+      animations[1].state.currentTime,
+    `The currentTime of added animation shold be ${WAIT_TIME}ms less than ` +
+      "at least that currentTime of first animation"
+  );
+});