1 files changed, 39 insertions, 0 deletions
diff --git a/devtools/server/tests/browser/browser_animation_getPlayers.js b/devtools/server/tests/browser/browser_animation_getPlayers.js
new file mode 100644
index 0000000000..fa3a65a227
--- /dev/null
+++ b/devtools/server/tests/browser/browser_animation_getPlayers.js
@@ -0,0 +1,39 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Check the output of getAnimationPlayersForNode
+
+add_task(async function() {
+  const { target, walker, animations } = await initAnimationsFrontForUrl(
+    MAIN_DOMAIN + "animation.html"
+  );
+
+  await theRightNumberOfPlayersIsReturned(walker, animations);
+
+  await target.destroy();
+  gBrowser.removeCurrentTab();
+});
+
+async function theRightNumberOfPlayersIsReturned(walker, animations) {
+  let node = await walker.querySelector(walker.rootNode, ".not-animated");
+  let players = await animations.getAnimationPlayersForNode(node);
+  is(players.length, 0, "0 players were returned for the unanimated node");
+
+  node = await walker.querySelector(walker.rootNode, ".simple-animation");
+  players = await animations.getAnimationPlayersForNode(node);
+  is(players.length, 1, "One animation player was returned");
+
+  node = await walker.querySelector(walker.rootNode, ".multiple-animations");
+  players = await animations.getAnimationPlayersForNode(node);
+  is(players.length, 2, "Two animation players were returned");
+
+  node = await walker.querySelector(walker.rootNode, ".transition");
+  players = await animations.getAnimationPlayersForNode(node);
+  is(
+    players.length,
+    1,
+    "One animation player was returned for the transitioned node"
+  );
+}