1 files changed, 80 insertions, 0 deletions
diff --git a/devtools/server/tests/browser/browser_animation_actor-lifetime.js b/devtools/server/tests/browser/browser_animation_actor-lifetime.js
new file mode 100644
index 0000000000..ef157d31fc
--- /dev/null
+++ b/devtools/server/tests/browser/browser_animation_actor-lifetime.js
@@ -0,0 +1,80 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Test for Bug 1247243
+
+add_task(async function () {
+  info("Setting up inspector and animation actors.");
+  const { animations, walker } = await initAnimationsFrontForUrl(
+    MAIN_DOMAIN + "animation-data.html"
+  );
+
+  info("Testing animated node actor");
+  const animatedNodeActor = await walker.querySelector(
+    walker.rootNode,
+    ".animated"
+  );
+  await animations.getAnimationPlayersForNode(animatedNodeActor);
+
+  await assertNumberOfAnimationActors(
+    1,
+    "AnimationActor have 1 AnimationPlayerActors"
+  );
+
+  info("Testing AnimationPlayerActors release");
+  const stillNodeActor = await walker.querySelector(walker.rootNode, ".still");
+  await animations.getAnimationPlayersForNode(stillNodeActor);
+  await assertNumberOfAnimationActors(
+    0,
+    "AnimationActor does not have any AnimationPlayerActors anymore"
+  );
+
+  info("Testing multi animated node actor");
+  const multiNodeActor = await walker.querySelector(walker.rootNode, ".multi");
+  await animations.getAnimationPlayersForNode(multiNodeActor);
+  await assertNumberOfAnimationActors(
+    2,
+    "AnimationActor has now 2 AnimationPlayerActors"
+  );
+
+  info("Testing single animated node actor");
+  await animations.getAnimationPlayersForNode(animatedNodeActor);
+  await assertNumberOfAnimationActors(
+    1,
+    "AnimationActor has only one AnimationPlayerActors"
+  );
+
+  info("Testing AnimationPlayerActors release again");
+  await animations.getAnimationPlayersForNode(stillNodeActor);
+  await assertNumberOfAnimationActors(
+    0,
+    "AnimationActor does not have any AnimationPlayerActors anymore"
+  );
+
+  async function assertNumberOfAnimationActors(expected, message) {
+    const actors = await SpecialPowers.spawn(
+      gBrowser.selectedBrowser,
+      [[animations.actorID]],
+      function (actorID) {
+        const { require } = ChromeUtils.importESModule(
+          "resource://devtools/shared/loader/Loader.sys.mjs"
+        );
+        const {
+          DevToolsServer,
+        } = require("resource://devtools/server/devtools-server.js");
+        // Convert actorID to current compartment string otherwise
+        // searchAllConnectionsForActor is confused and won't find the actor.
+        actorID = String(actorID);
+        const animationActors =
+          DevToolsServer.searchAllConnectionsForActor(actorID);
+        if (!animationActors) {
+          return 0;
+        }
+        return animationActors.actors.length;
+      }
+    );
+    is(actors, expected, message);
+  }
+});