1 files changed, 34 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Map/map-no-iterable.js b/js/src/tests/test262/built-ins/Map/map-no-iterable.js
new file mode 100644
index 0000000000..e1793ef578
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Map/map-no-iterable.js
@@ -0,0 +1,34 @@
+// 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-iterable
+description: >
+  Returns the new Map object with the new empty list if the iterable argument is
+  undefined.
+info: |
+  Map ( [ iterable ] )
+
+  ...
+  2. Let map be OrdinaryCreateFromConstructor(NewTarget, "%MapPrototype%",
+  «‍[[MapData]]» ).
+  ...
+  4. Map map’s [[MapData]] internal slot to a new empty List.
+  5. If iterable is not present, let iterable be undefined.
+  6. If iterable is either undefined or null, let iter be undefined.
+  ...
+  8. If iter is undefined, return map.
+---*/
+
+var m1 = new Map();
+var m2 = new Map(undefined);
+var m3 = new Map(null);
+
+assert.sameValue(m1.size, 0, 'The value of `new Map().size` is `0`');
+assert.sameValue(m2.size, 0, 'The value of `new Map(undefined).size` is `0`');
+assert.sameValue(m3.size, 0, 'The value of `new Map(null).size` is `0`');
+
+assert(m1 instanceof Map);
+assert(m2 instanceof Map);
+assert(m3 instanceof Map);
+
+reportCompare(0, 0);