1 files changed, 36 insertions, 0 deletions
diff --git a/devtools/client/aboutdebugging/test/browser/browser_aboutdebugging_devtoolstoolbox_target_destroyed.js b/devtools/client/aboutdebugging/test/browser/browser_aboutdebugging_devtoolstoolbox_target_destroyed.js
new file mode 100644
index 0000000000..d0001d1c03
--- /dev/null
+++ b/devtools/client/aboutdebugging/test/browser/browser_aboutdebugging_devtoolstoolbox_target_destroyed.js
@@ -0,0 +1,36 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Test that the expected supported categories are displayed for USB runtimes.
+add_task(async function () {
+  const targetTab = await addTab("about:home");
+
+  const { document, tab, window } = await openAboutDebugging();
+
+  // go to This Firefox and inspect the new tab
+  info("Inspecting a new tab in This Firefox");
+  await selectThisFirefoxPage(document, window.AboutDebugging.store);
+  const { devtoolsDocument, devtoolsTab, devtoolsWindow } =
+    await openAboutDevtoolsToolbox(document, tab, window, "about:home");
+  const targetUrl = devtoolsDocument.querySelector(".devtools-textinput");
+  ok(
+    targetUrl.value.includes("about:home"),
+    "about:devtools-toolbox is open for the target"
+  );
+
+  // close the inspected tab and check that error page is shown
+  info("removing the inspected tab");
+  await removeTab(targetTab);
+  await waitUntil(() =>
+    devtoolsWindow.document.querySelector(".qa-error-page")
+  );
+
+  info("closing the toolbox");
+  await removeTab(devtoolsTab);
+  await waitUntil(() => !findDebugTargetByText("Toolbox -", document));
+
+  info("removing about:debugging tab");
+  await removeTab(tab);
+});