1 files changed, 39 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/WeakMap/prototype/get/returns-undefined-if-key-cannot-be-held-weakly.js b/js/src/tests/test262/built-ins/WeakMap/prototype/get/returns-undefined-if-key-cannot-be-held-weakly.js
new file mode 100644
index 0000000000..b05b51b67a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/WeakMap/prototype/get/returns-undefined-if-key-cannot-be-held-weakly.js
@@ -0,0 +1,39 @@
+// 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-weakmap.prototype.get
+description: >
+  Returns undefined when key cannot be held weakly.
+info: |
+  WeakMap.prototype.get ( _key_ )
+  4. If CanBeHeldWeakly(_key_) is *false*, return *undefined*.
+features: [Symbol, WeakMap]
+---*/
+
+var map = new WeakMap();
+
+assert.sameValue(map.get(null), undefined, 'Returns undefined if key is null');
+
+assert.sameValue(map.get(NaN), undefined, 'Returns undefined if key is NaN');
+
+assert.sameValue(
+  map.get('foo'), undefined,
+  'Returns undefined if key is a String'
+);
+
+assert.sameValue(
+  map.get(1), undefined,
+  'Returns undefined if key is a Number'
+);
+
+assert.sameValue(
+  map.get(undefined), undefined,
+  'Returns undefined if key is undefined'
+);
+
+assert.sameValue(
+  map.get(Symbol.for('registered symbol')), undefined,
+  'Returns undefined if key is a registered Symbol'
+);
+
+reportCompare(0, 0);