1 files changed, 49 insertions, 0 deletions
diff --git a/devtools/client/webconsole/test/browser/browser_console_eager_eval.js b/devtools/client/webconsole/test/browser/browser_console_eager_eval.js
new file mode 100644
index 0000000000..74e8c5661b
--- /dev/null
+++ b/devtools/client/webconsole/test/browser/browser_console_eager_eval.js
@@ -0,0 +1,49 @@
+/* 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";
+
+// Check evaluating eager-evaluation values.
+const TEST_URI = "data:text/html;charset=utf8,<!DOCTYPE html>";
+
+add_task(async function () {
+  await addTab(TEST_URI);
+
+  await pushPref("devtools.chrome.enabled", true);
+
+  info("Open the Browser Console");
+  const hud = await BrowserConsoleManager.toggleBrowserConsole();
+
+  await executeNonDebuggeeSideeffect(hud);
+});
+
+// Test that code is still terminated, even if it is calling into realms
+// that aren't the normal debuggee realms (bug 1620087).
+async function executeNonDebuggeeSideeffect(hud) {
+  await executeAndWaitForResultMessage(
+    hud,
+    `globalThis.eagerLoader = ChromeUtils.importESModule("resource://devtools/shared/loader/Loader.sys.mjs");`,
+    `DevToolsLoader`
+  );
+
+  // "require" should terminate execution because it will try to create a new
+  // module record for the given URL, as long as the loader's debuggee
+  // has been properly added to the debugger. The termination should
+  // happen before it starts processing the path, so we don't need to provide
+  // a real path here.
+  setInputValue(hud, `globalThis.eagerLoader.require("fake://path");`);
+
+  // Wait a bit to make sure that the command has time to fail before we
+  // validate the eager-eval result.
+  await wait(500);
+  await waitForEagerEvaluationResult(hud, "");
+
+  setInputValue(hud, "");
+
+  await executeAndWaitForResultMessage(
+    hud,
+    `delete globalThis.eagerLoader;`,
+    `true`
+  );
+}