1 files changed, 58 insertions, 0 deletions
diff --git a/browser/components/customizableui/test/browser_947914_button_print.js b/browser/components/customizableui/test/browser_947914_button_print.js
new file mode 100644
index 0000000000..3cfaf83765
--- /dev/null
+++ b/browser/components/customizableui/test/browser_947914_button_print.js
@@ -0,0 +1,58 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+const isOSX = Services.appinfo.OS === "Darwin";
+
+add_task(async function() {
+  await SpecialPowers.pushPrefEnv({
+    set: [["print.tab_modal.enabled", false]],
+  });
+  CustomizableUI.addWidgetToArea(
+    "print-button",
+    CustomizableUI.AREA_FIXED_OVERFLOW_PANEL
+  );
+  registerCleanupFunction(() => CustomizableUI.reset());
+  await BrowserTestUtils.withNewTab(
+    {
+      gBrowser,
+      url: "http://example.com/",
+    },
+    async function() {
+      info("Check print button existence and functionality");
+
+      await waitForOverflowButtonShown();
+
+      await document.getElementById("nav-bar").overflowable.show();
+      info("Menu panel was opened");
+
+      await waitForCondition(
+        () => document.getElementById("print-button") != null
+      );
+
+      let printButton = document.getElementById("print-button");
+      ok(printButton, "Print button exists in Panel Menu");
+
+      if (isOSX) {
+        let panelHiddenPromise = promiseOverflowHidden(window);
+        document.getElementById("widget-overflow").hidePopup();
+        await panelHiddenPromise;
+        info("Menu panel was closed");
+      } else {
+        printButton.click();
+        await waitForCondition(() => gInPrintPreviewMode);
+
+        ok(gInPrintPreviewMode, "Entered print preview mode");
+
+        // close print preview
+        if (gInPrintPreviewMode) {
+          PrintUtils.exitPrintPreview();
+          await waitForCondition(() => !window.gInPrintPreviewMode);
+          info("Exited print preview");
+        }
+      }
+    }
+  );
+});