1 files changed, 30 insertions, 0 deletions
diff --git a/dom/media/mediasession/test/MediaSessionTestUtils.js b/dom/media/mediasession/test/MediaSessionTestUtils.js
new file mode 100644
index 0000000000..1ab0e1fe9b
--- /dev/null
+++ b/dom/media/mediasession/test/MediaSessionTestUtils.js
@@ -0,0 +1,30 @@
+const gMediaSessionActions = [
+  "play",
+  "pause",
+  "seekbackward",
+  "seekforward",
+  "previoustrack",
+  "nexttrack",
+  "skipad",
+  "seekto",
+  "stop",
+];
+
+// gCommands and gResults are used in `test_active_mediasession_within_page.html`
+const gCommands = {
+  createMainFrameSession: "create-main-frame-session",
+  createChildFrameSession: "create-child-frame-session",
+  destroyChildFrameSessions: "destroy-child-frame-sessions",
+  destroyActiveChildFrameSession: "destroy-active-child-frame-session",
+  destroyInactiveChildFrameSession: "destroy-inactive-child-frame-session",
+};
+
+const gResults = {
+  mainFrameSession: "main-frame-session",
+  childFrameSession: "child-session-unchanged",
+  childFrameSessionUpdated: "child-session-changed",
+};
+
+function nextWindowMessage() {
+  return new Promise(r => (window.onmessage = event => r(event)));
+}