js/src/tests/ecma_5/Array/length-set-object.js@6474c204b198
js/src/tests/ecma_5/Array/length-set-object.js
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
1 /*
2 * Any copyright is dedicated to the Public Domain.
3 * http://creativecommons.org/licenses/publicdomain/
4 * Contributor:
5 * Jeff Walden <jwalden+code@mit.edu>
6 */
8 //-----------------------------------------------------------------------------
9 var BUGNUMBER = 657298;
10 var summary = 'Various quirks of setting array length properties to objects';
12 print(BUGNUMBER + ": " + summary);
14 /**************
15 * BEGIN TEST *
16 **************/
18 function invokeConversionTwice1()
19 {
20 var count = 0;
21 [].length = { valueOf: function() { count++; return 1; } };
22 assertEq(count, 2);
23 }
24 invokeConversionTwice1();
26 function invokeConversionTwice2()
27 {
28 var count = 0;
29 [].length = { toString: function() { count++; return 1; }, valueOf: null };
30 assertEq(count, 2);
31 }
32 invokeConversionTwice2();
34 function dontOverwriteError1()
35 {
36 try
37 {
38 [].length = { valueOf: {}, toString: {} };
39 throw new Error("didn't throw a TypeError");
40 }
41 catch (e)
42 {
43 assertEq(e instanceof TypeError, true,
44 "expected a TypeError running out of conversion options, got " + e);
45 }
46 }
47 dontOverwriteError1();
49 function dontOverwriteError2()
50 {
51 try
52 {
53 [].length = { valueOf: function() { throw "error"; } };
54 throw new Error("didn't throw a TypeError");
55 }
56 catch (e)
57 {
58 assertEq(e, "error", "expected 'error' from failed conversion, got " + e);
59 }
60 }
61 dontOverwriteError2();
63 /******************************************************************************/
65 if (typeof reportCompare === "function")
66 reportCompare(true, true);
68 print("All tests passed!");
