1 files changed, 21 insertions, 0 deletions
diff --git a/js/src/tests/test262/intl402/String/prototype/localeCompare/default-options-object-prototype.js b/js/src/tests/test262/intl402/String/prototype/localeCompare/default-options-object-prototype.js
new file mode 100644
index 0000000000..dac753245b
--- /dev/null
+++ b/js/src/tests/test262/intl402/String/prototype/localeCompare/default-options-object-prototype.js
@@ -0,0 +1,21 @@
+// Copyright (C) 2017 Daniel Ehrenberg. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-initializecollator
+description: >
+  Monkey-patching Object.prototype does not change the default
+  options for Collator as a null prototype is used.
+info: |
+  InitializeCollator ( collator, locales, options )
+
+    1. If _options_ is *undefined*, then
+      1. Let _options_ be ObjectCreate(*null*).
+---*/
+
+if (new Intl.Collator("en").resolvedOptions().locale === "en") {
+  Object.prototype.sensitivity = "base";
+  assert.sameValue("a".localeCompare("A"), -1);
+}
+
+reportCompare(0, 0);