v8/test/mjsunit/for-in-delete.js
sgjesse@chromium.org fcfe6d74d9 Minor change to for-in
Return (smi) 0 instead of object null from the FILTER_KEY builtin.

Add a test which tests keys being deleted during for-in.
Review URL: http://codereview.chromium.org/3170004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5243 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2010-08-11 13:46:10 +00:00

51 lines
2.0 KiB
JavaScript

// Copyright 2010 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 that properties deleted during a for-in iteration do not show up in
// the for-in.
function f(o, expected, del) {
var index = 0;
for (p in o) {
if (del) delete o[del];
assertEquals(expected[index], p);
index++;
}
assertEquals(expected.length, index);
}
var o = {}
o.a = 1;
o.b = 2;
o.c = 3;
o.d = 3;
f(o, ['a', 'b', 'c', 'd']);
f(o, ['a', 'b', 'c', 'd']);
f(o, ['a', 'c', 'd'], 'b');
f(o, ['a', 'c'], 'd');