1 files changed, 46 insertions, 0 deletions
diff --git a/remote/shared/messagehandler/test/browser/broadcast/browser_two_tabs.js b/remote/shared/messagehandler/test/browser/broadcast/browser_two_tabs.js
new file mode 100644
index 0000000000..16b97e2a0a
--- /dev/null
+++ b/remote/shared/messagehandler/test/browser/broadcast/browser_two_tabs.js
@@ -0,0 +1,46 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+const TEST_PAGE = "https://example.com/document-builder.sjs?html=tab";
+
+add_task(async function test_broadcasting_two_tabs_command() {
+  info("Navigate the initial tab to the test URL");
+  const tab1 = gBrowser.selectedTab;
+  await loadURL(tab1.linkedBrowser, TEST_PAGE);
+  const browsingContext1 = tab1.linkedBrowser.browsingContext;
+
+  info("Open a new tab on the same test URL");
+  const tab2 = await addTab(TEST_PAGE);
+  const browsingContext2 = tab2.linkedBrowser.browsingContext;
+
+  const rootMessageHandler = createRootMessageHandler(
+    "session-id-broadcasting_two_tabs_command"
+  );
+
+  const broadcastValue = await sendTestBroadcastCommand(
+    "commandwindowglobalonly",
+    "testBroadcast",
+    {},
+    contextDescriptorAll,
+    rootMessageHandler
+  );
+
+  ok(
+    Array.isArray(broadcastValue),
+    "The broadcast returned an array of values"
+  );
+
+  is(broadcastValue.length, 2, "The broadcast returned 2 values as expected");
+
+  ok(
+    broadcastValue.includes("broadcast-" + browsingContext1.id),
+    "The broadcast returned the expected value from tab1"
+  );
+  ok(
+    broadcastValue.includes("broadcast-" + browsingContext2.id),
+    "The broadcast returned the expected value from tab2"
+  );
+  rootMessageHandler.destroy();
+});