1 files changed, 80 insertions, 0 deletions
diff --git a/dom/media/autoplay/test/browser/browser_autoplay_videoDocument.js b/dom/media/autoplay/test/browser/browser_autoplay_videoDocument.js
new file mode 100644
index 0000000000..77ce4ddbc1
--- /dev/null
+++ b/dom/media/autoplay/test/browser/browser_autoplay_videoDocument.js
@@ -0,0 +1,80 @@
+"use strict";
+
+const PAGE = GetTestWebBasedURL("audio.ogg");
+
+function setup_test_preference() {
+  return SpecialPowers.pushPrefEnv({
+    set: [
+      ["media.autoplay.default", SpecialPowers.Ci.nsIAutoplay.BLOCKED],
+      ["media.autoplay.blocking_policy", 0],
+    ],
+  });
+}
+
+async function checkIsVideoDocumentAutoplay(browser) {
+  const played = await SpecialPowers.spawn(browser, [], async () => {
+    const video = content.document.getElementsByTagName("video")[0];
+    const played =
+      video &&
+      (await video.play().then(
+        () => true,
+        () => false
+      ));
+    return played;
+  });
+  ok(played, "Should be able to play in video document.");
+}
+
+async function checkIsIframeVideoDocumentAutoplay(browser) {
+  info("- create iframe video document -");
+  const iframeBC = await SpecialPowers.spawn(browser, [PAGE], async pageURL => {
+    const iframe = content.document.createElement("iframe");
+    iframe.src = pageURL;
+    content.document.body.appendChild(iframe);
+    const iframeLoaded = new Promise((resolve, reject) => {
+      iframe.addEventListener("load", e => resolve(), { once: true });
+    });
+    await iframeLoaded;
+    return iframe.browsingContext;
+  });
+
+  info("- check whether iframe video document starts playing -");
+  const [paused, playedLength] = await SpecialPowers.spawn(iframeBC, [], () => {
+    const video = content.document.querySelector("video");
+    return [video.paused, video.played.length];
+  });
+  ok(paused, "Subdoc video should not have played");
+  is(playedLength, 0, "Should have empty played ranges");
+}
+
+add_task(async () => {
+  await BrowserTestUtils.withNewTab(
+    {
+      gBrowser,
+      url: PAGE,
+    },
+    async browser => {
+      info("- setup test preference -");
+      await setup_test_preference();
+
+      info(`- check whether video document is autoplay -`);
+      await checkIsVideoDocumentAutoplay(browser);
+    }
+  );
+});
+
+add_task(async () => {
+  await BrowserTestUtils.withNewTab(
+    {
+      gBrowser,
+      url: "about:blank",
+    },
+    async browser => {
+      info("- setup test preference -");
+      await setup_test_preference();
+
+      info(`- check whether video document in iframe is autoplay -`);
+      await checkIsIframeVideoDocumentAutoplay(browser);
+    }
+  );
+});