1 files changed, 46 insertions, 0 deletions
diff --git a/toolkit/components/extensions/test/xpcshell/test_ext_extension_startup_failure.js b/toolkit/components/extensions/test/xpcshell/test_ext_extension_startup_failure.js
new file mode 100644
index 0000000000..abd81a7ce3
--- /dev/null
+++ b/toolkit/components/extensions/test/xpcshell/test_ext_extension_startup_failure.js
@@ -0,0 +1,46 @@
+/* -*- Mode: indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* vim: set sts=2 sw=2 et tw=80: */
+"use strict";
+
+const { ExtensionTestCommon } = ChromeUtils.importESModule(
+  "resource://testing-common/ExtensionTestCommon.sys.mjs"
+);
+
+add_task(async function extension_startup_early_error() {
+  const EXTENSION_ID = "@extension-with-package-error";
+  let extension = ExtensionTestCommon.generate({
+    manifest: {
+      browser_specific_settings: { gecko: { id: EXTENSION_ID } },
+    },
+  });
+
+  extension.initLocale = async function () {
+    // Simulate error that happens during startup.
+    extension.packagingError("dummy error");
+  };
+
+  let startupPromise = extension.startup();
+
+  let policy = WebExtensionPolicy.getByID(EXTENSION_ID);
+  ok(policy, "WebExtensionPolicy instantiated at startup");
+  let readyPromise = policy.readyPromise;
+  ok(readyPromise, "WebExtensionPolicy.readyPromise is set");
+
+  await Assert.rejects(
+    startupPromise,
+    /dummy error/,
+    "Extension with packaging error should fail to load"
+  );
+
+  Assert.equal(
+    WebExtensionPolicy.getByID(EXTENSION_ID),
+    null,
+    "WebExtensionPolicy should be unregistered"
+  );
+
+  Assert.equal(
+    await readyPromise,
+    null,
+    "policy.readyPromise should be resolved with null"
+  );
+});