diff --git a/dom/tests/browser/.eslintrc.js b/dom/tests/browser/.eslintrc.js
new file mode 100644
index 000000000000..6596de0282f2
--- /dev/null
+++ b/dom/tests/browser/.eslintrc.js
@@ -0,0 +1,18 @@
+"use strict";
+
+module.exports = {
+ overrides: [
+ {
+ files: [
+ "file_module_loaded.js",
+ "file_module_loaded2.js",
+ ],
+ parserOptions: {
+ sourceType: "module",
+ },
+ },
+ ],
+ "extends": [
+ "plugin:mozilla/browser-test"
+ ]
+};
diff --git a/dom/tests/browser/browser.ini b/dom/tests/browser/browser.ini
index c92fdb7bbd54..24c8d5ad874e 100644
--- a/dom/tests/browser/browser.ini
+++ b/dom/tests/browser/browser.ini
@@ -79,6 +79,11 @@ support-files =
[browser_test_toolbars_visibility.js]
support-files =
test_new_window_from_content_child.html
+[browser_unlinkable_about_page_can_load_module_scripts.js]
+support-files =
+ file_load_module_script.html
+ file_module_loaded.js
+ file_module_loaded2.js
[browser_xhr_sandbox.js]
[browser_noopener.js]
skip-if = (verify && debug && (os == 'linux'))
diff --git a/dom/tests/browser/browser_unlinkable_about_page_can_load_module_scripts.js b/dom/tests/browser/browser_unlinkable_about_page_can_load_module_scripts.js
new file mode 100644
index 000000000000..78d176756225
--- /dev/null
+++ b/dom/tests/browser/browser_unlinkable_about_page_can_load_module_scripts.js
@@ -0,0 +1,59 @@
+/* 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";
+
+const kTestPage = getRootDirectory(gTestPath) + "file_load_module_script.html";
+
+const kDefaultFlags = Ci.nsIAboutModule.ALLOW_SCRIPT |
+ Ci.nsIAboutModule.URI_MUST_LOAD_IN_CHILD |
+ Ci.nsIAboutModule.URI_CAN_LOAD_IN_PRIVILEGED_CHILD |
+ Ci.nsIAboutModule.URI_SAFE_FOR_UNTRUSTED_CONTENT;
+
+const kAboutPagesRegistered = Promise.all([
+ BrowserTestUtils.registerAboutPage(
+ registerCleanupFunction, "test-linkable-page", kTestPage,
+ kDefaultFlags | Ci.nsIAboutModule.MAKE_LINKABLE),
+ BrowserTestUtils.registerAboutPage(
+ registerCleanupFunction, "test-unlinkable-page", kTestPage,
+ kDefaultFlags),
+]);
+
+add_task(async function() {
+ await kAboutPagesRegistered;
+
+ let consoleListener = {
+ observe() {
+ errorCount++;
+ if (shouldHaveJSError) {
+ ok(true, "JS error is expected and received");
+ } else {
+ ok(false, "Unexpected JS error was received");
+ }
+ },
+ };
+ Services.console.registerListener(consoleListener);
+ registerCleanupFunction(() => Services.console.unregisterListener(consoleListener));
+
+ let shouldHaveJSError = true;
+ let errorCount = 0;
+ await BrowserTestUtils.withNewTab({gBrowser, url: "about:test-linkable-page"}, async (browser) => {
+ await ContentTask.spawn(browser, null, () => {
+ isnot(content.document.body.textContent, "scriptLoaded",
+ "The page content shouldn't be changed on the linkable page");
+ });
+ });
+ ok(errorCount > 0, "Should have an error when loading test-linkable-page, got " + errorCount);
+
+ shouldHaveJSError = false;
+ errorCount = 0;
+ await BrowserTestUtils.withNewTab({gBrowser, url: "about:test-unlinkable-page"}, async (browser) => {
+ await ContentTask.spawn(browser, null, () => {
+ is(content.document.body.textContent, "scriptLoaded",
+ "The page content should be changed on the unlinkable page");
+ });
+ });
+ is(errorCount, 0, "Should have no errors when loading test-unlinkable-page");
+});
diff --git a/dom/tests/browser/file_load_module_script.html b/dom/tests/browser/file_load_module_script.html
new file mode 100644
index 000000000000..e1ba08d8df32
--- /dev/null
+++ b/dom/tests/browser/file_load_module_script.html
@@ -0,0 +1,8 @@
+
+
+
+
+
+
+
+
diff --git a/dom/tests/browser/file_module_loaded.js b/dom/tests/browser/file_module_loaded.js
new file mode 100644
index 000000000000..8763889e1f5d
--- /dev/null
+++ b/dom/tests/browser/file_module_loaded.js
@@ -0,0 +1,6 @@
+"use strict";
+
+import setBodyText from "chrome://mochitests/content/browser/dom/tests/browser/file_module_loaded2.js";
+document.addEventListener("DOMContentLoaded", () => {
+ setBodyText();
+});
diff --git a/dom/tests/browser/file_module_loaded2.js b/dom/tests/browser/file_module_loaded2.js
new file mode 100644
index 000000000000..28b26cd16e55
--- /dev/null
+++ b/dom/tests/browser/file_module_loaded2.js
@@ -0,0 +1,3 @@
+export default function setBodyText() {
+ document.body.textContent = "scriptLoaded";
+}