1 files changed, 67 insertions, 0 deletions
diff --git a/devtools/client/responsive/test/browser/browser_menu_item_01.js b/devtools/client/responsive/test/browser/browser_menu_item_01.js
new file mode 100644
index 0000000000..72b5b835be
--- /dev/null
+++ b/devtools/client/responsive/test/browser/browser_menu_item_01.js
@@ -0,0 +1,67 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Test RDM menu item is checked when expected, on multiple tabs.
+
+const TEST_URL = "data:text/html;charset=utf-8,";
+
+const {
+  startup,
+} = require("resource://devtools/client/responsive/utils/window.js");
+
+const activateTab = tab =>
+  new Promise(resolve => {
+    const { gBrowser } = tab.ownerGlobal;
+    const { tabContainer } = gBrowser;
+
+    tabContainer.addEventListener("TabSelect", function listener({ type }) {
+      tabContainer.removeEventListener(type, listener);
+      resolve();
+    });
+
+    gBrowser.selectedTab = tab;
+  });
+
+const isMenuChecked = () => {
+  const menu = document.getElementById("menu_responsiveUI");
+  return menu.getAttribute("checked") === "true";
+};
+
+add_task(async function () {
+  await startup(window);
+
+  ok(!isMenuChecked(), "RDM menu item is unchecked by default");
+});
+
+let tab2;
+
+addRDMTaskWithPreAndPost(
+  TEST_URL,
+  function pre_task() {
+    ok(!isMenuChecked(), "RDM menu item is unchecked for new tab");
+  },
+  async function task({ browser }) {
+    ok(isMenuChecked(), "RDM menu item is checked with RDM open");
+
+    tab2 = await addTab(TEST_URL);
+
+    ok(!isMenuChecked(), "RDM menu item is unchecked for new tab");
+
+    const tab = gBrowser.getTabForBrowser(browser);
+    await activateTab(tab);
+
+    ok(
+      isMenuChecked(),
+      "RDM menu item is checked for the tab where RDM is open"
+    );
+  },
+  function post_task() {
+    ok(!isMenuChecked(), "RDM menu item is unchecked after RDM is closed");
+  }
+);
+
+add_task(async function () {
+  await removeTab(tab2);
+});