Add m-esr52 at 52.6.0

1 files changed, 80 insertions, 0 deletions

diff --git a/browser/components/contextualidentity/test/browser/browser_broadcastchannel.js b/browser/components/contextualidentity/test/browser/browser_broadcastchannel.js
new file mode 100644
index 000000000..a821ce96b
--- /dev/null
+++ b/browser/components/contextualidentity/test/browser/browser_broadcastchannel.js
@@ -0,0 +1,80 @@
+let { classes: Cc, interfaces: Ci } = Components;
+
+const BASE_ORIGIN = "http://example.com";
+const URI = BASE_ORIGIN +
+  "/browser/browser/components/contextualidentity/test/browser/empty_file.html";
+
+// opens `uri' in a new tab with the provided userContextId and focuses it.
+// returns the newly opened tab
+function* openTabInUserContext(uri, userContextId) {
+  // open the tab in the correct userContextId
+  let tab = gBrowser.addTab(uri, {userContextId});
+
+  // select tab and make sure its browser is focused
+  gBrowser.selectedTab = tab;
+  tab.ownerGlobal.focus();
+
+  let browser = gBrowser.getBrowserForTab(tab);
+  yield BrowserTestUtils.browserLoaded(browser);
+  return {tab, browser};
+}
+
+add_task(function* setup() {
+  // make sure userContext is enabled.
+  yield new Promise(resolve => {
+    SpecialPowers.pushPrefEnv({"set": [
+      ["privacy.userContext.enabled", true]
+    ]}, resolve);
+  });
+});
+
+add_task(function* test() {
+  let receiver = yield* openTabInUserContext(URI, 2);
+
+  let channelName = "contextualidentity-broadcastchannel";
+
+  // reflect the received message on title
+  yield ContentTask.spawn(receiver.browser, channelName,
+    function (name) {
+      content.window.testPromise = new content.window.Promise(resolve => {
+        content.window.bc = new content.window.BroadcastChannel(name);
+        content.window.bc.onmessage = function (e) {
+          content.document.title += e.data;
+          resolve();
+        }
+      });
+    }
+  );
+
+  let sender1 = yield* openTabInUserContext(URI, 1);
+  let sender2 = yield* openTabInUserContext(URI, 2);
+  sender1.message = "Message from user context #1";
+  sender2.message = "Message from user context #2";
+
+  // send a message from a tab in different user context first
+  // then send a message from a tab in the same user context
+  for (let sender of [sender1, sender2]) {
+    yield ContentTask.spawn(
+        sender.browser,
+        { name: channelName, message: sender.message },
+        function (opts) {
+          let bc = new content.window.BroadcastChannel(opts.name);
+          bc.postMessage(opts.message);
+        });
+  }
+
+  // Since sender1 sends before sender2, if the title is exactly
+  // sender2's message, sender1's message must've been blocked
+  yield ContentTask.spawn(receiver.browser, sender2.message,
+    function* (message) {
+      yield content.window.testPromise.then(function() {
+        is(content.document.title, message,
+           "should only receive messages from the same user context");
+      });
+    }
+  );
+
+  gBrowser.removeTab(sender1.tab);
+  gBrowser.removeTab(sender2.tab);
+  gBrowser.removeTab(receiver.tab);
+});