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diff --git a/test/suite/intl402/ch12/12.3/12.3.3.js b/test/suite/intl402/ch12/12.3/12.3.3.js
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+// Copyright 2012 Mozilla Corporation. All rights reserved.
+// This code is governed by the license found in the LICENSE file.
+
+/**
+ * @description Tests that the object returned by Intl.DateTimeFormat.prototype.resolvedOptions
+ *     has the right properties.
+ * @author Norbert Lindenberg
+ */
+
+$INCLUDE("testIntl.js");
+
+var actual = new Intl.DateTimeFormat().resolvedOptions();
+
+var actual2 = new Intl.DateTimeFormat().resolvedOptions();
+if (actual2 === actual) {
+    $ERROR("resolvedOptions returned the same object twice.");
+}
+
+// source: CLDR file common/bcp47/calendar.xml; version CLDR 21.
+var calendars = [
+    "buddhist",
+    "chinese",
+    "coptic",
+    "ethioaa",
+    "ethiopic",
+    "gregory",
+    "hebrew",
+    "indian",
+    "islamic",
+    "islamicc",
+    "iso8601",
+    "japanese",
+    "persian",
+    "roc"
+];
+
+// this assumes the default values where the specification provides them
+mustHaveProperty(actual, "locale", isCanonicalizedStructurallyValidLanguageTag);
+mustHaveProperty(actual, "calendar", calendars);
+mustHaveProperty(actual, "numberingSystem", isValidNumberingSystem);
+mustHaveProperty(actual, "timeZone", [undefined]);
+mustHaveProperty(actual, "hour12", [true, false]);
+mustNotHaveProperty(actual, "weekday");
+mustNotHaveProperty(actual, "era");
+mustHaveProperty(actual, "year", ["2-digit", "numeric"]);
+mustHaveProperty(actual, "month", ["2-digit", "numeric", "narrow", "short", "long"]);
+mustHaveProperty(actual, "day", ["2-digit", "numeric"]);
+mustNotHaveProperty(actual, "hour");
+mustNotHaveProperty(actual, "minute");
+mustNotHaveProperty(actual, "second");
+mustNotHaveProperty(actual, "timeZoneName");
+