1 files changed, 69 insertions, 0 deletions
diff --git a/browser/components/extensions/test/browser/browser_ext_sidebarAction_windows.js b/browser/components/extensions/test/browser/browser_ext_sidebarAction_windows.js
new file mode 100644
index 0000000000..58f2b07797
--- /dev/null
+++ b/browser/components/extensions/test/browser/browser_ext_sidebarAction_windows.js
@@ -0,0 +1,69 @@
+/* -*- Mode: indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* vim: set sts=2 sw=2 et tw=80: */
+"use strict";
+
+let extData = {
+  manifest: {
+    sidebar_action: {
+      default_panel: "sidebar.html",
+    },
+  },
+  useAddonManager: "temporary",
+
+  files: {
+    "sidebar.html": `
+      <!DOCTYPE html>
+      <html>
+      <head><meta charset="utf-8"/>
+      <script src="sidebar.js"></script>
+      </head>
+      <body>
+      A Test Sidebar
+      </body></html>
+    `,
+
+    "sidebar.js": function () {
+      window.onload = () => {
+        browser.test.sendMessage("sidebar");
+      };
+    },
+  },
+};
+
+add_task(async function sidebar_windows() {
+  let extension = ExtensionTestUtils.loadExtension(extData);
+  await extension.startup();
+  // Test sidebar is opened on install
+  await extension.awaitMessage("sidebar");
+  ok(
+    !document.getElementById("sidebar-box").hidden,
+    "sidebar box is visible in first window"
+  );
+  // Check that the menuitem has our image styling.
+  let elements = document.getElementsByClassName("webextension-menuitem");
+  // ui is in flux, at time of writing we potentially have 3 menuitems, later
+  // it may be two or one, just make sure one is there.
+  ok(!!elements.length, "have a menuitem");
+  let style = elements[0].getAttribute("style");
+  ok(style.includes("webextension-menuitem-image"), "this menu has style");
+
+  let secondSidebar = extension.awaitMessage("sidebar");
+
+  // SidebarUI relies on window.opener being set, which is normal behavior when
+  // using menu or key commands to open a new browser window.
+  let win = await BrowserTestUtils.openNewBrowserWindow();
+
+  await secondSidebar;
+  ok(
+    !win.document.getElementById("sidebar-box").hidden,
+    "sidebar box is visible in second window"
+  );
+  // Check that the menuitem has our image styling.
+  elements = win.document.getElementsByClassName("webextension-menuitem");
+  ok(!!elements.length, "have a menuitem");
+  style = elements[0].getAttribute("style");
+  ok(style.includes("webextension-menuitem-image"), "this menu has style");
+
+  await extension.unload();
+  await BrowserTestUtils.closeWindow(win);
+});