1 files changed, 88 insertions, 0 deletions
diff --git a/devtools/client/debugger/test/mochitest/browser_dbg-extension-inspectedWindow-debugger-statement.js b/devtools/client/debugger/test/mochitest/browser_dbg-extension-inspectedWindow-debugger-statement.js
new file mode 100644
index 0000000000..790b0366b9
--- /dev/null
+++ b/devtools/client/debugger/test/mochitest/browser_dbg-extension-inspectedWindow-debugger-statement.js
@@ -0,0 +1,88 @@
+/* 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/>. */
+
+// Test that web extensions' inspectedWindow.eval() doesn't break debugger/console
+
+"use strict";
+
+// Test debugger statement in page, with devtools opened to debugger panel
+add_task(async function () {
+  const extension = await installAndStartExtension();
+
+  const dbg = await initDebugger("doc-scripts.html");
+
+  await extension.awaitMessage("loaded");
+
+  info("Evaluating debugger statement in page");
+  const evalFinished = invokeInTab("nestedC");
+  await waitForPaused(dbg);
+
+  info("resuming once");
+  await resume(dbg);
+
+  // bug 1728290: WebExtension target used to trigger the thread actor and also pause a second time on the debugger statement.
+  // This would prevent the evaluation from completing.
+  info("waiting for invoked function to complete");
+  await evalFinished;
+
+  await closeTabAndToolbox();
+  await extension.unload();
+});
+
+// Test debugger statement in webconsole
+add_task(async function () {
+  const extension = await installAndStartExtension();
+
+  // Test again with debugger panel closed
+  const toolbox = await openNewTabAndToolbox(
+    EXAMPLE_URL + "doc-scripts.html",
+    "webconsole"
+  );
+  await extension.awaitMessage("loaded");
+
+  info("Evaluating debugger statement in console");
+  const onSelected = toolbox.once("jsdebugger-selected");
+  const evalFinished = invokeInTab("nestedC");
+
+  await onSelected;
+  const dbg = createDebuggerContext(toolbox);
+  await waitForPaused(dbg);
+
+  info("resuming once");
+  await resume(dbg);
+
+  await evalFinished;
+
+  await closeTabAndToolbox();
+  await extension.unload();
+});
+
+async function installAndStartExtension() {
+  async function devtools_page() {
+    await globalThis.browser.devtools.inspectedWindow.eval("");
+    globalThis.browser.test.sendMessage("loaded");
+  }
+
+  const extension = ExtensionTestUtils.loadExtension({
+    manifest: {
+      devtools_page: "devtools_page.html",
+    },
+    files: {
+      "devtools_page.html": `<!DOCTYPE html>
+      <html>
+       <head>
+         <meta charset="utf-8">
+       </head>
+       <body>
+         <script src="devtools_page.js"></script>
+       </body>
+      </html>`,
+      "devtools_page.js": devtools_page,
+    },
+  });
+
+  await extension.startup();
+
+  return extension;
+}