1 files changed, 46 insertions, 0 deletions
diff --git a/dom/media/autoplay/test/mochitest/AutoplayTestUtils.js b/dom/media/autoplay/test/mochitest/AutoplayTestUtils.js
new file mode 100644
index 0000000000..aa8990c9d9
--- /dev/null
+++ b/dom/media/autoplay/test/mochitest/AutoplayTestUtils.js
@@ -0,0 +1,46 @@
+/* import-globals-from ../../../test/manifest.js */
+
+function playAndPostResult(muted, parent_window) {
+  let element = document.createElement("video");
+  element.preload = "auto";
+  element.muted = muted;
+  element.src = "short.mp4";
+  element.id = "video";
+  document.body.appendChild(element);
+  element.play().then(
+    () => {
+      parent_window.postMessage(
+        { played: true, allowedToPlay: element.allowedToPlay },
+        "*"
+      );
+    },
+    () => {
+      parent_window.postMessage(
+        { played: false, allowedToPlay: element.allowedToPlay },
+        "*"
+      );
+    }
+  );
+}
+
+function nextWindowMessage() {
+  return nextEvent(window, "message");
+}
+
+function log(msg) {
+  var log_pane = document.body;
+  log_pane.appendChild(document.createTextNode(msg));
+  log_pane.appendChild(document.createElement("br"));
+}
+
+const autoplayPermission = "autoplay-media";
+
+async function pushAutoplayAllowedPermission() {
+  return SpecialPowers.pushPermissions([
+    {
+      type: autoplayPermission,
+      allow: true,
+      context: document,
+    },
+  ]);
+}