Implement Object.getOwnPropertyNames constructor property [ES5 section 15.2.3...

test/mjsunit/object-get-own-property-names.js

Index: test/mjsunit/object-get-own-property-names.js
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--- test/mjsunit/object-get-own-property-names.js	(revision 0)
+++ test/mjsunit/object-get-own-property-names.js	(revision 0)
@@ -0,0 +1,104 @@
+// Copyright 2009 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+//       notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+//       copyright notice, this list of conditions and the following
+//       disclaimer in the documentation and/or other materials provided
+//       with the distribution.
+//     * Neither the name of Google Inc. nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Test ES5 section 15.2.3.4 Object.getOwnPropertyNames.
+
+// Check simple cases.
+var obj = { a: 1, b: 2};
+var propertyNames = Object.getOwnPropertyNames(obj);
+propertyNames.sort();
+assertEquals(2, propertyNames.length);
+assertEquals("a", propertyNames[0]);
+assertEquals("b", propertyNames[1]);
+
+var obj = { a: function(){}, b: function(){} };
+var propertyNames = Object.getOwnPropertyNames(obj);
+propertyNames.sort();
+assertEquals(2, propertyNames.length);
+assertEquals("a", propertyNames[0]);
+assertEquals("b", propertyNames[1]);
+
+// Check slow case
+var obj = { a: 1, b: 2, c: 3 };
+delete obj.b;
+var propertyNames = Object.getOwnPropertyNames(obj)
+propertyNames.sort();
+assertEquals(2, propertyNames.length);
+assertEquals("a", propertyNames[0]);
+assertEquals("c", propertyNames[1]);
+
+// Check that non-enumerable properties are being returned.
+var propertyNames = Object.getOwnPropertyNames([1, 2]);
+propertyNames.sort();
+assertEquals(3, propertyNames.length);
+assertEquals("0", propertyNames[0]);
+assertEquals("1", propertyNames[1]);
+assertEquals("length", propertyNames[2]);
+
+// Check that no proto properties are returned.
+var obj = { foo: "foo" };
+obj.__proto__ = { bar: "bar" };
+propertyNames = Object.getOwnPropertyNames(obj);
+propertyNames.sort();
+assertEquals(1, propertyNames.length);
+assertEquals("foo", propertyNames[0]);
+
+// Check that getter properties are returned.
+var obj = {};
+obj.__defineGetter__("getter", function() {});
+propertyNames = Object.getOwnPropertyNames(obj);
+propertyNames.sort();
+assertEquals(1, propertyNames.length);
+assertEquals("getter", propertyNames[0]);
+
+try {
+  Object.getOwnPropertyNames(4);
+  assertTrue(false);
+} catch (e) {
+  assertTrue(/on non-object/.test(e));
+}
+
+try {
+  Object.getOwnPropertyNames("foo");
+  assertTrue(false);
+} catch (e) {
+  assertTrue(/on non-object/.test(e));
+}
+
+try {
+  Object.getOwnPropertyNames(undefined);
+  assertTrue(false);
+} catch (e) {
+  assertTrue(/on non-object/.test(e));
+}
+
+try {
+  Object.getOwnPropertyNames(null);
+  assertTrue(false);
+} catch (e) {
+  assertTrue(/on non-object/.test(e));
+}