[es6] Implement Reflect.enumerate.

test/mjsunit/harmony/reflect.js

Index: test/mjsunit/harmony/reflect.js
diff --git a/test/mjsunit/harmony/reflect.js b/test/mjsunit/harmony/reflect.js
index fc52c93d197c598978064b710f1e57648a44c691..f34a1ed81b2502440b895355f7d9ec2f00c03596 100644
--- a/test/mjsunit/harmony/reflect.js
+++ b/test/mjsunit/harmony/reflect.js
@@ -256,3 +256,23 @@ function prepare(tgt) {
     assertFalse(Reflect.isExtensible(tgt));
   }
 })();
+
+
+
+////////////////////////////////////////////////////////////////////////////////
+// Reflect.enumerate
+
+
+(function testReflectEnumerateArity() {
+  assertEquals(1, Reflect.enumerate.length);
+})();
+
+
+(function testReflectEnumerateOnNonObject() {
+  assertThrows(function() { Reflect.enumerate(); }, TypeError);
+  assertThrows(function() { Reflect.enumerate(42); }, TypeError);
+  assertThrows(function() { Reflect.enumerate(null); }, TypeError);
+})();
+
+
+// See reflect-enumerate*.js for further tests.