update V8 to TOT snapshot branch
diff --git a/test/mjsunit/array-slice.js b/test/mjsunit/array-slice.js
new file mode 100644
index 0000000..c993a07
--- /dev/null
+++ b/test/mjsunit/array-slice.js
@@ -0,0 +1,162 @@
+// 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.
+
+// Check that slicing array of holes keeps it as array of holes
+(function() {
+ var array = new Array(10);
+ for (var i = 0; i < 7; i++) {
+ var sliced = array.slice();
+ assertEquals(array.length, sliced.length);
+ assertFalse(0 in sliced);
+ }
+})();
+
+
+// Check various forms of arguments omission.
+(function() {
+ var array = new Array(7);
+
+ for (var i = 0; i < 7; i++) {
+ assertEquals(array, array.slice());
+ assertEquals(array, array.slice(0));
+ assertEquals(array, array.slice(undefined));
+ assertEquals(array, array.slice("foobar"));
+ assertEquals(array, array.slice(undefined, undefined));
+ }
+})();
+
+
+// Check variants of negatives and positive indices.
+(function() {
+ var array = new Array(7);
+
+ for (var i = 0; i < 7; i++) {
+ assertEquals(7, array.slice(-100).length);
+ assertEquals(3, array.slice(-3).length);
+ assertEquals(3, array.slice(4).length);
+ assertEquals(1, array.slice(6).length);
+ assertEquals(0, array.slice(7).length);
+ assertEquals(0, array.slice(8).length);
+ assertEquals(0, array.slice(100).length);
+
+ assertEquals(0, array.slice(0, -100).length);
+ assertEquals(4, array.slice(0, -3).length);
+ assertEquals(4, array.slice(0, 4).length);
+ assertEquals(6, array.slice(0, 6).length);
+ assertEquals(7, array.slice(0, 7).length);
+ assertEquals(7, array.slice(0, 8).length);
+ assertEquals(7, array.slice(0, 100).length);
+
+ // Some exotic cases.
+
+ obj = { toString: function() { throw 'Exception'; } };
+
+ // More than 2 arguments:
+ assertEquals(7, array.slice(0, 7, obj, null, undefined).length);
+
+ // Custom conversion:
+ assertEquals(1, array.slice({valueOf: function() { return 1; }},
+ {toString: function() { return 2; }}).length);
+
+ // Throwing an exception in conversion:
+ try {
+ assertEquals(7, array.slice(0, obj).length);
+ throw 'Should have thrown';
+ } catch (e) {
+ assertEquals('Exception', e);
+ }
+ }
+})();
+
+
+// Nasty: modify the array in ToInteger.
+(function() {
+ var array = [];
+ var expected = []
+ bad_guy = { valueOf: function() { array.push(array.length); return -1; } };
+
+ for (var i = 0; i < 13; i++) {
+ var sliced = array.slice(bad_guy);
+ expected.push(i);
+ assertEquals(expected, array);
+ // According to the spec (15.4.4.10), length is calculated before
+ // performing ToInteger on arguments.
+ if (i == 0) {
+ assertEquals([], sliced); // Length was 0, nothing to get.
+ } else {
+ // Actually out of array [0..i] we get [i - 1] as length is i.
+ assertEquals([i - 1], sliced);
+ }
+ }
+})();
+
+
+// Now check the case with array of holes and some elements on prototype.
+(function() {
+ var len = 9;
+ var array = new Array(len);
+
+ var at3 = "@3";
+ var at7 = "@7";
+
+ for (var i = 0; i < 7; i++) {
+ Array.prototype[3] = at3;
+ Array.prototype[7] = at7;
+
+ assertEquals(len, array.length);
+ for (var i = 0; i < array.length; i++) {
+ assertEquals(array[i], Array.prototype[i]);
+ }
+
+ var sliced = array.slice();
+
+ assertEquals(len, sliced.length);
+
+ assertTrue(delete Array.prototype[3]);
+ assertTrue(delete Array.prototype[7]);
+
+ // Note that slice copies values from prototype into the array.
+ assertEquals(array[3], undefined);
+ assertFalse(array.hasOwnProperty(3));
+ assertEquals(sliced[3], at3);
+ assertTrue(sliced.hasOwnProperty(3));
+
+ assertEquals(array[7], undefined);
+ assertFalse(array.hasOwnProperty(7));
+ assertEquals(sliced[7], at7);
+ assertTrue(sliced.hasOwnProperty(7));
+
+ // ... but keeps the rest as holes:
+ Array.prototype[5] = "@5";
+ assertEquals(array[5], Array.prototype[5]);
+ assertFalse(array.hasOwnProperty(5));
+ assertEquals(sliced[5], Array.prototype[5]);
+ assertFalse(sliced.hasOwnProperty(5));
+
+ assertTrue(delete Array.prototype[5]);
+ }
+})();