1 // Copyright 2008 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are
6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided
11 // with the distribution.
12 // * Neither the name of Google Inc. nor the names of its
13 // contributors may be used to endorse or promote products derived
14 // from this software without specific prior written permission.
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 function check_enumeration_order(obj) {
30 for (var name in obj) assertTrue(value < obj[name]);
34 function make_object(size) {
37 for (var i = 0; i < size; i++) a["a_" + i] = i + 1;
38 check_enumeration_order(a);
40 for (var i = 0; i < size; i +=3) delete a["a_" + i];
41 check_enumeration_order(a);
44 // Validate the enumeration order for object up to 100 named properties.
45 for (var j = 1; j< 100; j++) make_object(j);
48 function make_literal_object(size) {
50 for (var i = 0; i < size-1; i++) code += " a_" + i + " : " + (i + 1) + ", ";
51 code += "a_" + (size - 1) + " : " + size;
53 eval("var a = " + code);
54 check_enumeration_order(a);
57 // Validate the enumeration order for object literals up to 100 named
59 for (var j = 1; j< 100; j++) make_literal_object(j);
61 // We enumerate indexed properties in numerical order followed by
62 // named properties in insertion order, followed by indexed properties
63 // of the prototype object in numerical order, followed by named
64 // properties of the prototype object in insertion order, and so on.
66 // This enumeration order is not required by the specification, so
67 // this just documents our choice.
72 proto2[3] = 0; // also on the 'proto1' object
74 proto2[4294967295] = 0;
76 proto2[4294967296] = 0;
83 proto1.f = 0; // also on the 'o' object
95 proto1.__proto__ = proto2;
97 var expected = ['23', '42', // indexed from 'o'
98 '-23', '300000000000', 'f', 'g', '-4', // named from 'o'
99 '3', '5', // indexed from 'proto1'
100 'd', 'e', // named from 'proto1'
101 '2', '140000', '4294967295', // indexed from 'proto2'
102 'a', 'b', 'c', '4294967296']; // named from 'proto2'
104 for (var p in o) actual.push(p);
105 assertArrayEquals(expected, actual);