tests/stress/array-copywithin.js

   1 function shouldBe(actual, expected) {
   2     if (actual !== expected)
   3         throw new Error('bad value: ' + actual);
   4 }
   5
   6 function shouldBeArray(actual, expected) {
   7     shouldBe(actual.length, expected.length);
   8     for (var i = 0; i < expected.length; ++i) {
   9         try {
  10             shouldBe(actual[i], expected[i]);
  11         } catch(e) {
  12             print(JSON.stringify(actual));
  13             throw e;
  14         }
  15     }
  16 }
  17
  18 function shouldThrow(func, errorMessage) {
  19     var errorThrown = false;
  20     var error = null;
  21     try {
  22         func();
  23     } catch (e) {
  24         errorThrown = true;
  25         error = e;
  26     }
  27     if (!errorThrown)
  28         throw new Error('not thrown');
  29     if (String(error) !== errorMessage)
  30         throw new Error(`bad error: ${String(error)}`);
  31 }
  32
  33 shouldBe([].copyWithin.name, 'copyWithin');
  34 shouldBe([].copyWithin.length, 2);
  35 shouldBe(Array.prototype.hasOwnProperty('copyWithin'), true);
  36 shouldBe(JSON.stringify(Object.getOwnPropertyDescriptor(Array.prototype, 'copyWithin')), '{"writable":true,"enumerable":false,"configurable":true}');
  37
  38 // 0 arguments. (it is equivalent to copyWithin(0))
  39 shouldBeArray([1, 2, 3, 4, 5].copyWithin(), [1, 2, 3, 4, 5]);
  40 shouldBeArray([].copyWithin(), []);
  41
  42 // 1 arguments.
  43 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-5), [1, 2, 3, 4, 5]);
  44 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-4), [1, 1, 2, 3, 4]);
  45 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-3), [1, 2, 1, 2, 3]);
  46 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-2), [1, 2, 3, 1, 2]);
  47 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-1), [1, 2, 3, 4, 1]);
  48 shouldBeArray([1, 2, 3, 4, 5].copyWithin(0), [1, 2, 3, 4, 5]);
  49 shouldBeArray([1, 2, 3, 4, 5].copyWithin(1), [1, 1, 2, 3, 4]);
  50 shouldBeArray([1, 2, 3, 4, 5].copyWithin(2), [1, 2, 1, 2, 3]);
  51 shouldBeArray([1, 2, 3, 4, 5].copyWithin(3), [1, 2, 3, 1, 2]);
  52 shouldBeArray([1, 2, 3, 4, 5].copyWithin(4), [1, 2, 3, 4, 1]);
  53 shouldBeArray([1, 2, 3, 4, 5].copyWithin(5), [1, 2, 3, 4, 5]);
  54 shouldBeArray([1, 2, 3, 4, 5].copyWithin(6), [1, 2, 3, 4, 5]);
  55
  56 // 2 arguments.
  57 shouldBeArray([1, 2, 3, 4, 5].copyWithin(0, 0), [1, 2, 3, 4, 5]);
  58 shouldBeArray([1, 2, 3, 4, 5].copyWithin(0, 1), [2, 3, 4, 5, 5]);
  59 shouldBeArray([1, 2, 3, 4, 5].copyWithin(0, 2), [3, 4, 5, 4, 5]);
  60 shouldBeArray([1, 2, 3, 4, 5].copyWithin(0, 3), [4, 5, 3, 4, 5]);
  61 shouldBeArray([1, 2, 3, 4, 5].copyWithin(0, 4), [5, 2, 3, 4, 5]);
  62 shouldBeArray([1, 2, 3, 4, 5].copyWithin(0, 5), [1, 2, 3, 4, 5]);
  63 shouldBeArray([1, 2, 3, 4, 5].copyWithin(0, 6), [1, 2, 3, 4, 5]);
  64 shouldBeArray([1, 2, 3, 4, 5].copyWithin(1, 3), [1, 4, 5, 4, 5]);
  65 shouldBeArray([1, 2, 3, 4, 5].copyWithin(2, 3), [1, 2, 4, 5, 5]);
  66 shouldBeArray([1, 2, 3, 4, 5].copyWithin(3, 3), [1, 2, 3, 4, 5]);
  67 shouldBeArray([1, 2, 3, 4, 5].copyWithin(4, 3), [1, 2, 3, 4, 4]);
  68 shouldBeArray([1, 2, 3, 4, 5].copyWithin(5, 3), [1, 2, 3, 4, 5]);
  69 shouldBeArray([1, 2, 3, 4, 5].copyWithin(6, 3), [1, 2, 3, 4, 5]);
  70 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-1, -1), [1, 2, 3, 4, 5]);
  71 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-1, -2), [1, 2, 3, 4, 4]);
  72 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-1, -3), [1, 2, 3, 4, 3]);
  73 shouldBeArray([1, 2, 3, 4, 5].copyWithin(0, -3), [3, 4, 5, 4, 5]);
  74 shouldBeArray([1, 2, 3, 4, 5].copyWithin(0, -8), [1, 2, 3, 4, 5]);
  75
  76 // 3 arguments.
  77 shouldBeArray([1, 2, 3, 4, 5].copyWithin(0, 3, 4), [4, 2, 3, 4, 5]);
  78 shouldBeArray([1, 2, 3, 4, 5].copyWithin(0, 0, 5), [1, 2, 3, 4, 5]);
  79 shouldBeArray([1, 2, 3, 4, 5].copyWithin(0, 1, 1), [1, 2, 3, 4, 5]);
  80 shouldBeArray([1, 2, 3, 4, 5].copyWithin(0, 1, 2), [2, 2, 3, 4, 5]);
  81 shouldBeArray([1, 2, 3, 4, 5].copyWithin(0, 1, 3), [2, 3, 3, 4, 5]);
  82 shouldBeArray([1, 2, 3, 4, 5].copyWithin(0, 1, 4), [2, 3, 4, 4, 5]);
  83 shouldBeArray([1, 2, 3, 4, 5].copyWithin(0, 1, 5), [2, 3, 4, 5, 5]);
  84 shouldBeArray([1, 2, 3, 4, 5].copyWithin(0, 1, 6), [2, 3, 4, 5, 5]);
  85 shouldBeArray([1, 2, 3, 4, 5].copyWithin(2, 1, 3), [1, 2, 2, 3, 5]);
  86 shouldBeArray([1, 2, 3, 4, 5].copyWithin(6, 1, 3), [1, 2, 3, 4, 5]);
  87 shouldBeArray([1, 2, 3, 4, 5].copyWithin(0, -0, -1), [1, 2, 3, 4, 5]);
  88 shouldBeArray([1, 2, 3, 4, 5].copyWithin(0, 0, -1), [1, 2, 3, 4, 5]);
  89 shouldBeArray([1, 2, 3, 4, 5].copyWithin(0, -1, -1), [1, 2, 3, 4, 5]);
  90 shouldBeArray([1, 2, 3, 4, 5].copyWithin(0, -2, -1), [4, 2, 3, 4, 5]);
  91 shouldBeArray([1, 2, 3, 4, 5].copyWithin(0, -3, -1), [3, 4, 3, 4, 5]);
  92 shouldBeArray([1, 2, 3, 4, 5].copyWithin(0, -4, -1), [2, 3, 4, 4, 5]);
  93 shouldBeArray([1, 2, 3, 4, 5].copyWithin(0, -5, -1), [1, 2, 3, 4, 5]);
  94 shouldBeArray([1, 2, 3, 4, 5].copyWithin(0, -6, -1), [1, 2, 3, 4, 5]);
  95 shouldBeArray([1, 2, 3, 4, 5].copyWithin(0, 0, -2), [1, 2, 3, 4, 5]);
  96 shouldBeArray([1, 2, 3, 4, 5].copyWithin(0, -1, -2), [1, 2, 3, 4, 5]);
  97 shouldBeArray([1, 2, 3, 4, 5].copyWithin(0, -2, -2), [1, 2, 3, 4, 5]);
  98 shouldBeArray([1, 2, 3, 4, 5].copyWithin(0, -3, -2), [3, 2, 3, 4, 5]);
  99 shouldBeArray([1, 2, 3, 4, 5].copyWithin(0, -4, -2), [2, 3, 3, 4, 5]);
 100 shouldBeArray([1, 2, 3, 4, 5].copyWithin(0, -5, -2), [1, 2, 3, 4, 5]);
 101 shouldBeArray([1, 2, 3, 4, 5].copyWithin(0, -6, -2), [1, 2, 3, 4, 5]);
 102 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-3, -0, -1), [1, 2, 1, 2, 3]);
 103 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-3, 0, -1), [1, 2, 1, 2, 3]);
 104 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-3, -1, -1), [1, 2, 3, 4, 5]);
 105 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-3, -2, -1), [1, 2, 4, 4, 5]);
 106 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-3, -3, -1), [1, 2, 3, 4, 5]);
 107 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-3, -4, -1), [1, 2, 2, 3, 4]);
 108 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-3, -5, -1), [1, 2, 1, 2, 3]);
 109 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-3, -6, -1), [1, 2, 1, 2, 3]);
 110 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-3, 0, -2), [1, 2, 1, 2, 3]);
 111 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-3, -1, -2), [1, 2, 3, 4, 5]);
 112 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-3, -2, -2), [1, 2, 3, 4, 5]);
 113 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-3, -3, -2), [1, 2, 3, 4, 5]);
 114 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-3, -4, -2), [1, 2, 2, 3, 5]);
 115 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-3, -5, -2), [1, 2, 1, 2, 3]);
 116 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-3, -6, -2), [1, 2, 1, 2, 3]);
 117 shouldBeArray([1, 2, 3, 4, 5].copyWithin(0, -1, -1), [1, 2, 3, 4, 5]);
 118 shouldBeArray([1, 2, 3, 4, 5].copyWithin(0, -1, -2), [1, 2, 3, 4, 5]);
 119 shouldBeArray([1, 2, 3, 4, 5].copyWithin(0, -1, -3), [1, 2, 3, 4, 5]);
 120 shouldBeArray([1, 2, 3, 4, 5].copyWithin(0, -1, -4), [1, 2, 3, 4, 5]);
 121 shouldBeArray([1, 2, 3, 4, 5].copyWithin(0, -1, -5), [1, 2, 3, 4, 5]);
 122 shouldBeArray([1, 2, 3, 4, 5].copyWithin(0, -1, -6), [1, 2, 3, 4, 5]);
 123 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-3, -2, -2), [1, 2, 3, 4, 5]);
 124 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-3, -2, -3), [1, 2, 3, 4, 5]);
 125 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-3, -2, -4), [1, 2, 3, 4, 5]);
 126 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-3, -2, -5), [1, 2, 3, 4, 5]);
 127
 128 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, -0, -1), [1, 2, 3, 4, 5]);
 129 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, 0, -1), [1, 2, 3, 4, 5]);
 130 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, 0, -2), [1, 2, 3, 4, 5]);
 131 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, 0, 5), [1, 2, 3, 4, 5]);
 132 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, 1, 1), [1, 2, 3, 4, 5]);
 133 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, 1, 2), [2, 2, 3, 4, 5]);
 134 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, 1, 3), [2, 3, 3, 4, 5]);
 135 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, 1, 4), [2, 3, 4, 4, 5]);
 136 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, 1, 5), [2, 3, 4, 5, 5]);
 137 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, 1, 6), [2, 3, 4, 5, 5]);
 138 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, 1, 3), [2, 3, 3, 4, 5]);
 139 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, 1, 3), [2, 3, 3, 4, 5]);
 140 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, 3, 4), [4, 2, 3, 4, 5]);
 141 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, -1, -1), [1, 2, 3, 4, 5]);
 142 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, -2, -1), [4, 2, 3, 4, 5]);
 143 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, -3, -1), [3, 4, 3, 4, 5]);
 144 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, -4, -1), [2, 3, 4, 4, 5]);
 145 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, -5, -1), [1, 2, 3, 4, 5]);
 146 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, -6, -1), [1, 2, 3, 4, 5]);
 147 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, -1, -2), [1, 2, 3, 4, 5]);
 148 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, -2, -2), [1, 2, 3, 4, 5]);
 149 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, -3, -2), [3, 2, 3, 4, 5]);
 150 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, -4, -2), [2, 3, 3, 4, 5]);
 151 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, -5, -2), [1, 2, 3, 4, 5]);
 152 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, -6, -2), [1, 2, 3, 4, 5]);
 153 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, -1, -1), [1, 2, 3, 4, 5]);
 154 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, -2, -1), [4, 2, 3, 4, 5]);
 155 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, -3, -1), [3, 4, 3, 4, 5]);
 156 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, -4, -1), [2, 3, 4, 4, 5]);
 157 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, -5, -1), [1, 2, 3, 4, 5]);
 158 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, -6, -1), [1, 2, 3, 4, 5]);
 159 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, -1, -2), [1, 2, 3, 4, 5]);
 160 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, -2, -2), [1, 2, 3, 4, 5]);
 161 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, -3, -2), [3, 2, 3, 4, 5]);
 162 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, -4, -2), [2, 3, 3, 4, 5]);
 163 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, -5, -2), [1, 2, 3, 4, 5]);
 164 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, -6, -2), [1, 2, 3, 4, 5]);
 165 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, -1, -1), [1, 2, 3, 4, 5]);
 166 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, -1, -2), [1, 2, 3, 4, 5]);
 167 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, -1, -3), [1, 2, 3, 4, 5]);
 168 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, -1, -4), [1, 2, 3, 4, 5]);
 169 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, -1, -5), [1, 2, 3, 4, 5]);
 170 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, -1, -6), [1, 2, 3, 4, 5]);
 171 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, -2, -2), [1, 2, 3, 4, 5]);
 172 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, -2, -3), [1, 2, 3, 4, 5]);
 173 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, -2, -4), [1, 2, 3, 4, 5]);
 174 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-6, -2, -5), [1, 2, 3, 4, 5]);
 175
 176 shouldBeArray([1, 2, 3, 4, 5].copyWithin(NaN, 1), [1, 2, 3, 4, 5].copyWithin(0, 1));
 177 shouldBeArray([1, 2, 3, 4, 5].copyWithin(NaN, NaN, 1), [1, 2, 3, 4, 5].copyWithin(0, 0, 1));
 178 shouldBeArray([1, 2, 3, 4, 5].copyWithin(NaN, NaN, NaN), [1, 2, 3, 4, 5].copyWithin(0, 0, 0));
 179 shouldBeArray([1, 2, 3, 4, 5].copyWithin(Infinity, 0, 1), [1, 2, 3, 4, 5].copyWithin(5, 0, 1));
 180 shouldBeArray([1, 2, 3, 4, 5].copyWithin(Infinity, Infinity, 1), [1, 2, 3, 4, 5].copyWithin(5, 5, 1));
 181 shouldBeArray([1, 2, 3, 4, 5].copyWithin(1, Infinity, 1), [1, 2, 3, 4, 5].copyWithin(1, 5, 1));
 182 shouldBeArray([1, 2, 3, 4, 5].copyWithin(1, -Infinity, 1), [1, 2, 3, 4, 5].copyWithin(1, 0, 1));
 183 shouldBeArray([1, 2, 3, 4, 5].copyWithin(-Infinity, 0, 1), [1, 2, 3, 4, 5].copyWithin(0, 0, 1));
 184 shouldBeArray([1, 2, 3, 4, 5].copyWithin(1, 0, Infinity), [1, 2, 3, 4, 5].copyWithin(1, 0, 5));
 185 shouldBeArray([1, 2, 3, 4, 5].copyWithin(1, 0, -Infinity), [1, 2, 3, 4, 5].copyWithin(1, 0, 0));
 186
 187 var copyWithin = Array.prototype.copyWithin;
 188
 189 function arrayToObject(array) {
 190     var object = {};
 191     for (var [key, value] of array.entries()) {
 192         object[key] = value;
 193     }
 194     object.length = array.length;
 195     return object;
 196 }
 197 var object = arrayToObject([1, 2, 3, 4, 5]);
 198 object.length = -Infinity;
 199 shouldBeArray(copyWithin.call(object, 1), { length: -Infinity });
 200 shouldBe(JSON.stringify(copyWithin.call(object, 1)), '{"0":1,"1":2,"2":3,"3":4,"4":5,"length":null}');
 201
 202 var object = arrayToObject([1, 2, 3, 4, 5]);
 203 object.length = -Infinity;
 204 shouldBe(JSON.stringify(copyWithin.call(object, 1)), '{"0":1,"1":2,"2":3,"3":4,"4":5,"length":null}');
 205
 206 var array = [1, 2, 3, 4, 5];
 207 var same = array.copyWithin(0, 3);
 208 shouldBeArray(same, [4, 5, 3, 4, 5]);
 209 shouldBeArray(array, [4, 5, 3, 4, 5]);
 210 shouldBe(same, array);
 211
 212 shouldBe(JSON.stringify([].copyWithin.call({length: 5, 3: 1}, 0, 3)), '{"0":1,"3":1,"length":5}');
 213 shouldBe(JSON.stringify([].copyWithin.call(new Int32Array([1, 2, 3, 4, 5]), 0, 3, 4)), '{"0":4,"1":2,"2":3,"3":4,"4":5}');
 214
 215 shouldBe(JSON.stringify([].copyWithin.call({length: 5.5, 3: 1}, 0, 3)), '{"0":1,"3":1,"length":5.5}');
 216 shouldBe(JSON.stringify([].copyWithin.call({length: 5.5, 3: 1}, 0.1, 3)), '{"0":1,"3":1,"length":5.5}');
 217 shouldBe(JSON.stringify([].copyWithin.call({length: 5.5, 3: 1}, 0.1, 3.3)), '{"0":1,"3":1,"length":5.5}');
 218 shouldBe(JSON.stringify([].copyWithin.call({length: 5.5, 3: 1}, 0.1, 3.8)), '{"0":1,"3":1,"length":5.5}');
 219 shouldBe(JSON.stringify([].copyWithin.call({length: 5.5, 3: 1}, 0.1, 4.1)), '{"3":1,"length":5.5}');
 220
 221 var object = arrayToObject([1, 2, 3, 4, 5]);
 222 delete object[2];
 223 delete object[3];
 224 delete object[4];
 225 var result = copyWithin.call(object, 0, 3, 5);
 226 shouldBe(JSON.stringify(result), '{"length":5}');
 227
 228 // 'copyWithin' in Array's @unscopables
 229 (function () {
 230     var array = [];
 231     var copyWithin = 42;
 232     var forEach = 42;
 233     with (array) {
 234         shouldBe(copyWithin, 42);
 235         shouldBe(forEach, [].forEach);
 236     }
 237 }());
 238
 239 shouldThrow(function () {
 240     Array.prototype.copyWithin.call(undefined);
 241 }, 'TypeError: Array.copyWithin requires that |this| not be null or undefined');
 242
 243 shouldThrow(function () {
 244     Array.prototype.copyWithin.call(null);
 245 }, 'TypeError: Array.copyWithin requires that |this| not be null or undefined');
 246
 247
 248 function valueOf(code) {
 249     return {
 250         valueOf() {
 251             throw new Error(code);
 252         }
 253     };
 254 }
 255
 256 shouldThrow(function () {
 257     var object = arrayToObject([1, 2, 3, 4, 5]);
 258     object.length = valueOf(0);
 259     copyWithin.call(object, valueOf(1), valueOf(2), valueOf(3));
 260 }, 'Error: 0');
 261
 262 shouldThrow(function () {
 263     var object = arrayToObject([1, 2, 3, 4, 5]);
 264     copyWithin.call(object, valueOf(1), valueOf(2), valueOf(3));
 265 }, 'Error: 1');
 266
 267 shouldThrow(function () {
 268     var object = arrayToObject([1, 2, 3, 4, 5]);
 269     copyWithin.call(object, 0, valueOf(2), valueOf(3));
 270 }, 'Error: 2');
 271
 272 shouldThrow(function () {
 273     var object = arrayToObject([1, 2, 3, 4, 5]);
 274     copyWithin.call(object, 0, 1, valueOf(3));
 275 }, 'Error: 3');
 276
 277 shouldThrow(function () {
 278     var object = arrayToObject([1, 2, 3, 4, 5]);
 279     Object.freeze(object);
 280     copyWithin.call(object, 0, 1, 2);
 281 }, 'TypeError: Attempted to assign to readonly property.');