text: // Copyright 2008 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.
  
  function props(x) {
    var array = [];
    for (var p in x) array.push(p);
    return array.sort();
  }
  
  assertEquals(0, props({}).length, "olen0");
  assertEquals(1, props({x:1}).length, "olen1");
  assertEquals(2, props({x:1, y:2}).length, "olen2");
  
  assertArrayEquals(["x"], props({x:1}), "x");
  assertArrayEquals(["x", "y"], props({x:1, y:2}), "xy");
  assertArrayEquals(["x", "y", "zoom"], props({x:1, y:2, zoom:3}), "xyzoom");
  
  assertEquals(0, props([]).length, "alen0");
  assertEquals(1, props([1]).length, "alen1");
  assertEquals(2, props([1,2]).length, "alen2");
  
  assertArrayEquals(["0"], props([1]), "0");
  assertArrayEquals(["0", "1"], props([1,2]), "01");
  assertArrayEquals(["0", "1", "2"], props([1,2,3]), "012");
  
  var o = {};
  var a = [];
  for (var i = 0x0020; i < 0x01ff; i+=2) {
    var s = 'char:' + String.fromCharCode(i);
    a.push(s);
    o[s] = i;
  }
  assertArrayEquals(a, props(o), "charcodes");
  
  var a = [];
  assertEquals(0, props(a).length, "proplen0");
  a[Math.pow(2,30)-1] = 0;
  assertEquals(1, props(a).length, "proplen1");
  a[Math.pow(2,31)-1] = 0;
  assertEquals(2, props(a).length, "proplen2");
  a[1] = 0;
  assertEquals(3, props(a).length, "proplen3");
  
  for (var hest = 'hest' in {}) { }
  assertEquals('hest', hest, "empty-no-override");
  
  var result = '';
  for (var p in {a : [0], b : 1}) { result += p; }
  assertEquals('ab', result, "ab");
  
  var result = '';
  for (var p in {a : {v:1}, b : 1}) { result += p; }
  assertEquals('ab', result, "ab-nodeep");
  
  var result = '';
  for (var p in { get a() {}, b : 1}) { result += p; }
  assertEquals('ab', result, "abget");
  
  var result = '';
  for (var p in { get a() {}, set a(x) {}, b : 1}) { result += p; }
  assertEquals('ab', result, "abgetset");
  
  