1 files changed, 27 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Map/prototype/get/returns-value-normalized-zero-key.js b/js/src/tests/test262/built-ins/Map/prototype/get/returns-value-normalized-zero-key.js
new file mode 100644
index 0000000000..194b186002
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Map/prototype/get/returns-value-normalized-zero-key.js
@@ -0,0 +1,27 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-map.prototype.get
+description: >
+  -0 and +0 are normalized to +0;
+info: |
+  Map.prototype.get ( key )
+
+  4. Let entries be the List that is the value of M’s [[MapData]] internal slot.
+  5. Repeat for each Record {[[key]], [[value]]} p that is an element of
+  entries,
+    a. If p.[[key]] is not empty and SameValueZero(p.[[key]], key) is true,
+    return p.[[value]].
+  ...
+---*/
+
+var map = new Map();
+
+map.set(+0, 42);
+assert.sameValue(map.get(-0), 42);
+
+map = new Map();
+map.set(-0, 43);
+assert.sameValue(map.get(+0), 43);
+
+reportCompare(0, 0);