Merge revision 3813 to 3930 from bleeding_edge to partial snapshots branch.

test/mjsunit/array-functions-prototype-misc.js

+// Copyright 2008 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.
+
+/**
+ * @fileoverview Test splice, shift, unshift, slice and join on small
+ * and large arrays.  Some of these methods are specified such that they
+ * should work on other objects too, so we test that too.
+ */
+
+var LARGE = 40000000;
+var VERYLARGE = 4000000000;
+
+// Nicer for firefox 1.5.  Unless you uncomment the following two lines,
+// smjs will appear to hang on this file.
+//var LARGE = 40000;
+//var VERYLARGE = 40000;
+
+var fourhundredth = LARGE/400;
+
+function PseudoArray() {
+};
+
+for (var use_real_arrays = 0; use_real_arrays <= 1; use_real_arrays++) {
+  var poses = [0, 140, 20000, VERYLARGE];
+  var the_prototype;
+  var new_function;
+  var push_function;
+  var concat_function;
+  var slice_function;
+  var splice_function;
+  var splice_function_2;
+  var unshift_function;
+  var unshift_function_2;
+  var shift_function;
+  if (use_real_arrays) {
+    new_function = function(length) {
+      return new Array(length);
+    };
+    the_prototype = Array.prototype;
+    push_function = function(array, elt) {
+      return array.push(elt);
+    };
+    concat_function = function(array, other) {
+      return array.concat(other);
+    };
+    slice_function = function(array, start, len) {
+      return array.slice(start, len);
+    };
+    splice_function = function(array, start, len) {
+      return array.splice(start, len);
+    };
+    splice_function_2 = function(array, start, len, elt) {
+      return array.splice(start, len, elt);
+    };
+    unshift_function = function(array, elt) {
+      return array.unshift(elt);
+    };
+    unshift_function_2 = function(array, elt1, elt2) {
+      return array.unshift(elt1, elt2);
+    };
+    shift_function = function(array) {
+      return array.shift();
+    };
+  } else {
+    // Don't run largest size on non-arrays or we'll be here for ever.
+    poses.pop();
+    new_function = function(length) {
+      var obj = new PseudoArray();
+      obj.length = length;
+      return obj;
+    };
+    the_prototype = PseudoArray.prototype;
+    push_function = function(array, elt) {
+      array[array.length] = elt;
+      array.length++;
+    };
+    concat_function = function(array, other) {
+      return Array.prototype.concat.call(array, other);
+    };
+    slice_function = function(array, start, len) {
+      return Array.prototype.slice.call(array, start, len);
+    };
+    splice_function = function(array, start, len) {
+      return Array.prototype.splice.call(array, start, len);
+    };
+    splice_function_2 = function(array, start, len, elt) {
+      return Array.prototype.splice.call(array, start, len, elt);
+    };
+    unshift_function = function(array, elt) {
+      return Array.prototype.unshift.call(array, elt);
+    };
+    unshift_function_2 = function(array, elt1, elt2) {
+      return Array.prototype.unshift.call(array, elt1, elt2);
+    };
+    shift_function = function(array) {
+      return Array.prototype.shift.call(array);
+    };
+  }
+
+  for (var pos_pos = 0; pos_pos < poses.length; pos_pos++) {
+    var pos = poses[pos_pos];
+    if (pos > 100) {
+      var a = new_function(pos);
+      assertEquals(pos, a.length);
+      push_function(a, 'foo');
+      assertEquals(pos + 1, a.length);
+      var b = ['bar'];
+      // Delete a huge number of holes.
+      var c = splice_function(a, 10, pos - 20);
+      assertEquals(pos - 20, c.length);
+      assertEquals(21, a.length);
+    }
+
+    // Add a numeric property to the prototype of the array class.  This
+    // allows us to test some borderline stuff relative to the standard.
+    the_prototype["" + (pos + 1)] = 'baz';
+
+    if (use_real_arrays) {
+      // It seems quite clear from ECMAScript spec 15.4.4.5.  Just call Get on
+      // every integer in the range.
+      // IE, Safari get this right.
+      // FF, Opera get this wrong.
+      var a = ['zero', ,'two'];
+      if (pos == 0) {
+        assertEquals("zero,baz,two", a.join(","));
+      }
+
+      // Concat only applies to real arrays, unlike most of the other methods.
+      var a = new_function(pos);
+      push_function(a, "con");
+      assertEquals("con", a[pos]);
+      assertEquals(pos + 1, a.length);
+      var b = new_function(0);
+      push_function(b, "cat");
+      assertEquals("cat", b[0]);
+      var ab = concat_function(a, b);
+      assertEquals("con", ab[pos]);
+      assertEquals(pos + 2, ab.length);
+      assertEquals("cat", ab[pos + 1]);
+      var ba = concat_function(b, a);
+      assertEquals("con", ba[pos + 1]);
+      assertEquals(pos + 2, ba.length);
+      assertEquals("cat", ba[0]);
+
+      // Join with '' as separator.
+      var join = a.join('');
+      assertEquals("con", join);
+      join = b.join('');
+      assertEquals("cat", join);
+      join = ab.join('');
+      assertEquals("concat", join);
+      join = ba.join('');
+      assertEquals("catcon", join);
+
+      var sparse = [];
+      sparse[pos + 1000] = 'is ';
+      sparse[pos + 271828] = 'time ';
+      sparse[pos + 31415] = 'the ';
+      sparse[pos + 012260199] = 'all ';
+      sparse[-1] = 'foo';
+      sparse[pos + 22591927] = 'good ';
+      sparse[pos + 1618033] = 'for ';
+      sparse[pos + 91] = ': Now ';
+      sparse[pos + 86720199] = 'men.';
+      sparse.hest = 'fisk';
+
+      assertEquals("baz: Now is the time for all good men.", sparse.join(''));
+    }
+
+    a = new_function(pos);
+    push_function(a, 'zero');
+    push_function(a, void 0);
+    push_function(a, 'two');
+
+    // Splice works differently from join.
+    // IE, Safari get this wrong.
+    // FF, Opera get this right.
+    // 15.4.4.12 line 24 says the object itself has to have the property...
+    var zero = splice_function(a, pos, 1);
+    assertEquals("undefined", typeof(a[pos]));
+    assertEquals("two", a[pos+1], "pos1:" + pos);
+    assertEquals(pos + 2, a.length, "a length");
+    assertEquals(1, zero.length, "zero length");
+    assertEquals("zero", zero[0]);
+
+    // 15.4.4.12 line 41 says the object itself has to have the property...
+    a = new_function(pos);
+    push_function(a, 'zero');
+    push_function(a, void 0);
+    push_function(a, 'two');
+    var nothing = splice_function_2(a, pos, 0, 'minus1');
+    assertEquals("minus1", a[pos]);
+    assertEquals("zero", a[pos+1]);
+    assertEquals("undefined", typeof(a[pos+2]), "toot!");
+    assertEquals("two", a[pos+3], "pos3");
+    assertEquals(pos + 4, a.length);
+    assertEquals(1, zero.length);
+    assertEquals("zero", zero[0]);
+
+    // 15.4.4.12 line 10 says the object itself has to have the property...
+    a = new_function(pos);
+    push_function(a, 'zero');
+    push_function(a, void 0);
+    push_function(a, 'two');
+    var one = splice_function(a, pos + 1, 1);
+    assertEquals("", one.join(","));
+    assertEquals(pos + 2, a.length);
+    assertEquals("zero", a[pos]);
+    assertEquals("two", a[pos+1]);
+
+    // Set things back to the way they were.
+    the_prototype[pos + 1] = undefined;
+
+    // Unshift.
+    var a = new_function(pos);
+    push_function(a, "foo");
+    assertEquals("foo", a[pos]);
+    assertEquals(pos + 1, a.length);
+    unshift_function(a, "bar");
+    assertEquals("foo", a[pos+1]);
+    assertEquals(pos + 2, a.length);
+    assertEquals("bar", a[0]);
+    unshift_function_2(a, "baz", "boo");
+    assertEquals("foo", a[pos+3]);
+    assertEquals(pos + 4, a.length);
+    assertEquals("baz", a[0]);
+    assertEquals("boo", a[1]);
+    assertEquals("bar", a[2]);
+
+    // Shift.
+    var baz = shift_function(a);
+    assertEquals("baz", baz);
+    assertEquals("boo", a[0]);
+    assertEquals(pos + 3, a.length);
+    assertEquals("foo", a[pos + 2]);
+
+    // Slice.
+    var bar = slice_function(a, 1, 0);  // don't throw an exception please.
+    bar = slice_function(a, 1, 2);
+    assertEquals("bar", bar[0]);
+    assertEquals(1, bar.length);
+    assertEquals("bar", a[1]);
+
+  }
+}
+
+// Lets see if performance is reasonable.
+
+var a = new Array(LARGE + 10);
+for (var i = 0; i < a.length; i += 1000) {
+  a[i] = i;
+}
+
+// Take something near the end of the array.
+for (var i = 0; i < 100; i++) {
+  var top = a.splice(LARGE, 5);
+  assertEquals(5, top.length);
+  assertEquals(LARGE, top[0]);
+  assertEquals("undefined", typeof(top[1]));
+  assertEquals(LARGE + 5, a.length);
+  a.splice(LARGE, 0, LARGE);
+  a.length = LARGE + 10;
+}
+
+var a = new Array(LARGE + 10);
+for (var i = 0; i < a.length; i += fourhundredth) {
+  a[i] = i;
+}
+
+// Take something near the middle of the array.
+for (var i = 0; i < 10; i++) {
+  var top = a.splice(LARGE >> 1, 5);
+  assertEquals(5, top.length);
+  assertEquals(LARGE >> 1, top[0]);
+  assertEquals("undefined", typeof(top[1]));
+  assertEquals(LARGE + 5, a.length);
+  a.splice(LARGE >> 1, 0, LARGE >> 1, void 0, void 0, void 0, void 0);
+}
+
+
+// Test http://b/issue?id=1202711
+arr = [0];
+arr.length = 2;
+Array.prototype[1] = 1;
+assertEquals(1, arr.pop());
+assertEquals(0, arr.pop());
+Array.prototype[1] = undefined;
+
+// Test http://code.google.com/p/chromium/issues/detail?id=21860
+Array.prototype.push.apply([], [1].splice(0, -(-1 % 5)));