1 files changed, 57 insertions, 0 deletions
diff --git a/toolkit/components/mozintl/test/test_mozintlhelper.js b/toolkit/components/mozintl/test/test_mozintlhelper.js
new file mode 100644
index 0000000000..b233ab611d
--- /dev/null
+++ b/toolkit/components/mozintl/test/test_mozintlhelper.js
@@ -0,0 +1,57 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+function run_test() {
+  const miHelper = Cc["@mozilla.org/mozintlhelper;1"].getService(
+    Ci.mozIMozIntlHelper
+  );
+
+  test_this_global(miHelper);
+  test_cross_global(miHelper);
+  test_methods_presence(miHelper);
+
+  ok(true);
+}
+
+function test_this_global(miHelper) {
+  let x = {};
+
+  miHelper.addGetCalendarInfo(x);
+  equal(x.getCalendarInfo instanceof Function, true);
+  equal(x.getCalendarInfo() instanceof Object, true);
+}
+
+function test_cross_global(miHelper) {
+  var global = new Cu.Sandbox("https://example.com/");
+  var x = global.Object();
+
+  miHelper.addGetCalendarInfo(x);
+  var waivedX = Cu.waiveXrays(x);
+  equal(waivedX.getCalendarInfo instanceof Function, false);
+  equal(
+    waivedX.getCalendarInfo instanceof Cu.waiveXrays(global.Function),
+    true
+  );
+  equal(waivedX.getCalendarInfo() instanceof Object, false);
+  equal(
+    waivedX.getCalendarInfo() instanceof Cu.waiveXrays(global.Object),
+    true
+  );
+}
+
+function test_methods_presence(miHelper) {
+  equal(miHelper.addGetCalendarInfo instanceof Function, true);
+  equal(miHelper.addDateTimeFormatConstructor instanceof Function, true);
+  equal(miHelper.addDisplayNamesConstructor instanceof Function, true);
+
+  let x = {};
+
+  miHelper.addGetCalendarInfo(x);
+  equal(x.getCalendarInfo instanceof Function, true);
+
+  miHelper.addDateTimeFormatConstructor(x);
+  equal(x.DateTimeFormat instanceof Function, true);
+
+  miHelper.addDisplayNamesConstructor(x);
+  equal(x.DisplayNames instanceof Function, true);
+}