1 files changed, 50 insertions, 0 deletions
diff --git a/devtools/server/tests/browser/browser_animation_getSubTreeAnimations.js b/devtools/server/tests/browser/browser_animation_getSubTreeAnimations.js
new file mode 100644
index 0000000000..0a8a420c18
--- /dev/null
+++ b/devtools/server/tests/browser/browser_animation_getSubTreeAnimations.js
@@ -0,0 +1,50 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Check that the AnimationsActor can retrieve all animations inside a node's
+// subtree (but not going into iframes).
+
+const URL = MAIN_DOMAIN + "animation.html";
+
+// Import inspector's shared head.
+Services.scriptloader.loadSubScript(
+  "chrome://mochitests/content/browser/devtools/client/inspector/test/shared-head.js",
+  this
+);
+
+add_task(async function () {
+  info("Creating a test document with 2 iframes containing animated nodes");
+
+  const { inspector, target, walker, animations } =
+    await initAnimationsFrontForUrl(
+      "data:text/html;charset=utf-8," +
+        "<iframe id='iframe' src='" +
+        URL +
+        "'></iframe>"
+    );
+
+  info("Try retrieving all animations from the root doc's <body> node");
+  const rootBody = await walker.querySelector(walker.rootNode, "body");
+  let players = await animations.getAnimationPlayersForNode(rootBody);
+  is(players.length, 0, "The node has no animation players");
+
+  info("Retrieve all animations from the iframe's <body> node");
+  const frameBody = await getNodeFrontInFrames(["#iframe", "body"], inspector);
+  const animationsForFrame = await frameBody.targetFront.getFront("animations");
+  players = await animationsForFrame.getAnimationPlayersForNode(frameBody);
+
+  // Testing for a hard-coded number of animations here would intermittently
+  // fail depending on how fast or slow the test is (indeed, the test page
+  // contains short transitions, and delayed animations). So just make sure we
+  // at least have the infinitely running animations.
+  Assert.greaterOrEqual(
+    players.length,
+    4,
+    "All subtree animations were retrieved"
+  );
+
+  await target.destroy();
+  gBrowser.removeCurrentTab();
+});