1 files changed, 51 insertions, 0 deletions
diff --git a/devtools/client/inspector/test/browser_inspector_textbox-menu_reopen_toolbox.js b/devtools/client/inspector/test/browser_inspector_textbox-menu_reopen_toolbox.js
new file mode 100644
index 0000000000..ea9025a5aa
--- /dev/null
+++ b/devtools/client/inspector/test/browser_inspector_textbox-menu_reopen_toolbox.js
@@ -0,0 +1,51 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+"use strict";
+
+// Test that textbox context menu elements are still displayed correctly after reopening
+// the toolbox. Fixes https://bugzilla.mozilla.org/show_bug.cgi?id=1510182.
+
+add_task(async function () {
+  await addTab(`data:text/html;charset=utf-8,<div>test</div>`);
+
+  info("Testing the textbox context menu a first time");
+  const { toolbox, inspector } = await openInspector();
+  await checkContextMenuOnSearchbox(inspector, toolbox);
+
+  // Destroy the toolbox and try the context menu again with a new toolbox.
+  await toolbox.destroy();
+
+  info("Testing the textbox context menu after reopening the toolbox");
+  const { toolbox: newToolbox, inspector: newInspector } =
+    await openInspector();
+  await checkContextMenuOnSearchbox(newInspector, newToolbox);
+});
+
+async function checkContextMenuOnSearchbox(inspector, toolbox) {
+  // The same context menu is used for any text input.
+  // Here we use the inspector searchbox for this test because it is always available.
+  const searchbox = inspector.panelDoc.getElementById("inspector-searchbox");
+
+  info(
+    "Simulating context click on the textbox and expecting the menu to open"
+  );
+  const onContextMenu = toolbox.once("menu-open");
+  synthesizeContextMenuEvent(searchbox);
+  await onContextMenu;
+
+  const textboxContextMenu = toolbox.getTextBoxContextMenu();
+  info("Wait until menu items are rendered");
+  const pasteElement = textboxContextMenu.querySelector("#editmenu-paste");
+  await waitUntil(() => !!pasteElement.getAttribute("label"));
+
+  is(
+    pasteElement.getAttribute("label"),
+    "Paste",
+    "Paste is visible and localized"
+  );
+
+  info("Closing the menu");
+  const onContextMenuHidden = toolbox.once("menu-close");
+  textboxContextMenu.hidePopup();
+  await onContextMenuHidden;
+}