1 files changed, 72 insertions, 0 deletions
diff --git a/js/xpconnect/tests/unit/test_import.js b/js/xpconnect/tests/unit/test_import.js
new file mode 100644
index 0000000000..05c6a52647
--- /dev/null
+++ b/js/xpconnect/tests/unit/test_import.js
@@ -0,0 +1,72 @@
+/* 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/. */
+
+var AppConstants;
+function run_test() {
+  var scope = {};
+  var exports = ChromeUtils.import("resource://gre/modules/AppConstants.jsm", scope);
+  Assert.equal(typeof(scope.AppConstants), "object");
+  Assert.equal(typeof(scope.AppConstants.isPlatformAndVersionAtLeast), "function");
+
+  equal(scope.AppConstants, exports.AppConstants);
+  deepEqual(Object.keys(scope), ["AppConstants"]);
+  deepEqual(Object.keys(exports), ["AppConstants"]);
+
+  exports = ChromeUtils.import("resource://gre/modules/AppConstants.jsm");
+  equal(scope.AppConstants, exports.AppConstants);
+  deepEqual(Object.keys(exports), ["AppConstants"]);
+
+  // access module's global object directly without importing any
+  // symbols
+  Assert.throws(
+    () => ChromeUtils.import("resource://gre/modules/AppConstants.jsm", null),
+    TypeError
+  );
+
+  // import symbols to our global object
+  Assert.equal(typeof(Cu.import), "function");
+  ({AppConstants} = ChromeUtils.import("resource://gre/modules/AppConstants.jsm"));
+  Assert.equal(typeof(AppConstants), "object");
+  Assert.equal(typeof(AppConstants.isPlatformAndVersionAtLeast), "function");
+
+  // try on a new object
+  var scope2 = {};
+  ChromeUtils.import("resource://gre/modules/AppConstants.jsm", scope2);
+  Assert.equal(typeof(scope2.AppConstants), "object");
+  Assert.equal(typeof(scope2.AppConstants.isPlatformAndVersionAtLeast), "function");
+
+  Assert.ok(scope2.AppConstants == scope.AppConstants);
+
+  // try on a new object using the resolved URL
+  var res = Cc["@mozilla.org/network/protocol;1?name=resource"]
+              .getService(Ci.nsIResProtocolHandler);
+  var resURI = Cc["@mozilla.org/network/io-service;1"]
+                 .getService(Ci.nsIIOService)
+                 .newURI("resource://gre/modules/AppConstants.jsm");
+  dump("resURI: " + resURI + "\n");
+  var filePath = res.resolveURI(resURI);
+  var scope3 = {};
+  Assert.throws(
+    () => ChromeUtils.import(filePath, scope3),
+    /SecurityError/, "Expecting file URI not to be imported"
+  );
+
+  // make sure we throw when the second arg is bogus
+  var didThrow = false;
+  try {
+      ChromeUtils.import("resource://gre/modules/AppConstants.jsm", "wrong");
+  } catch (ex) {
+      print("exception (expected): " + ex);
+      didThrow = true;
+  }
+  Assert.ok(didThrow);
+
+  // make sure we throw when the URL scheme is not known
+  var scope4 = {};
+  const wrongScheme = "data:text/javascript,var a = {a:1}";
+  Assert.throws(
+    () => ChromeUtils.import(wrongScheme, scope4),
+    /SecurityError/, "Expecting data URI not to be imported"
+  );
+}