169a99ed0b2b2ef69d393c371b03db3a98aaf880eBen Murdoch// Copyright 2011 the V8 project authors. All rights reserved.
2a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Redistribution and use in source and binary forms, with or without
3a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// modification, are permitted provided that the following conditions are
4a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// met:
5a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block//
6a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block//     * Redistributions of source code must retain the above copyright
7a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block//       notice, this list of conditions and the following disclaimer.
8a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block//     * Redistributions in binary form must reproduce the above
9a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block//       copyright notice, this list of conditions and the following
10a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block//       disclaimer in the documentation and/or other materials provided
11a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block//       with the distribution.
12a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block//     * Neither the name of Google Inc. nor the names of its
13a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block//       contributors may be used to endorse or promote products derived
14a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block//       from this software without specific prior written permission.
15a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block//
16a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block
2869a99ed0b2b2ef69d393c371b03db3a98aaf880eBen Murdoch// Test that using bind several time does not change the length of existing
2969a99ed0b2b2ef69d393c371b03db3a98aaf880eBen Murdoch// bound functions.
30a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block
3169a99ed0b2b2ef69d393c371b03db3a98aaf880eBen Murdochfunction foo() {
3269a99ed0b2b2ef69d393c371b03db3a98aaf880eBen Murdoch}
33a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block
3469a99ed0b2b2ef69d393c371b03db3a98aaf880eBen Murdochvar f1 = function (x) {}.bind(foo);
3569a99ed0b2b2ef69d393c371b03db3a98aaf880eBen Murdochvar f2 = function () {};
36a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block
3769a99ed0b2b2ef69d393c371b03db3a98aaf880eBen MurdochassertEquals(1, f1.length);
38a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block
3969a99ed0b2b2ef69d393c371b03db3a98aaf880eBen Murdoch// the object we bind to can be any object
4069a99ed0b2b2ef69d393c371b03db3a98aaf880eBen Murdochf2.bind(foo);
41a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block
4269a99ed0b2b2ef69d393c371b03db3a98aaf880eBen MurdochassertEquals(1, f1.length);
43a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block
4469a99ed0b2b2ef69d393c371b03db3a98aaf880eBen Murdochvar desc = Object.getOwnPropertyDescriptor(f1, 'length');
4569a99ed0b2b2ef69d393c371b03db3a98aaf880eBen MurdochassertEquals(false, desc.writable);
4669a99ed0b2b2ef69d393c371b03db3a98aaf880eBen MurdochassertEquals(false, desc.enumerable);
4769a99ed0b2b2ef69d393c371b03db3a98aaf880eBen MurdochassertEquals(false, desc.configurable);
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