tests/stress/array-iterators-next.js

   1 // This test checks the behavior of the iterator.next methods on Array objects
   2
   3 var testArray = [1,2,3,4,5,6]
   4 var keys = testArray.keys();
   5 var i = 0;
   6 while (true) {
   7     var {done, value: key} = keys.next();
   8     if (done)
   9         break;
  10     if (key !== i)
  11         throw "Error: bad value: " + key;
  12     i++;
  13 }
  14
  15 if (testArray.length !== i)
  16     throw "Error: bad value: " + i;
  17
  18 var value = keys.next().value;
  19 if (value !== undefined)
  20     throw "Error: bad value: " + value;
  21
  22 var values = testArray[Symbol.iterator]();
  23 var i = 0;
  24 while (true) {
  25     var {done, value} = values.next();
  26     if (done)
  27         break;
  28     i++;
  29     if (value !== i)
  30         throw "Error: bad value: " + value;
  31 }
  32
  33 if (testArray.length !== i)
  34     throw "Error: bad value: " + i;
  35
  36 var value = values.next().value;
  37 if (value !== undefined)
  38     throw "Error: bad value: " + value;
  39
  40 var values = testArray.values();
  41 var i = 0;
  42 while (true) {
  43     var {done, value} = values.next();
  44     if (done)
  45         break;
  46     i++;
  47     if (value !== i)
  48         throw "Error: bad value: " + value;
  49 }
  50
  51 if (testArray.length !== i)
  52     throw "Error: bad value: " + i;
  53
  54 var value = values.next().value;
  55 if (value !== undefined)
  56     throw "Error: bad value: " + value;
  57
  58 var entries = testArray.entries();
  59 var i = 0;
  60 do {
  61     var {done, value: entry} = entries.next();
  62     if (done)
  63         break;
  64     var [key, value] = entry;
  65     if (value !== testArray[key])
  66         throw "Error: bad value: " + value + " " + testArray[key];
  67     if (key !== i)
  68         throw "Error: bad value: " + key;
  69     i++
  70     if (value !== i)
  71         throw "Error: bad value: " + value + " " + i;
  72 } while (!done);
  73
  74 if (testArray.length !== i)
  75     throw "Error: bad value: " + i;
  76
  77 var value = entries.next().value;
  78 if (value !== undefined)
  79     throw "Error: bad value: " + value;
  80
  81 var entries = testArray.entries();
  82 var i = 0;
  83 do {
  84     var {done, value: entry} = entries.next();
  85     if (done)
  86         break;
  87     var [key, value] = entry;
  88     if (value !== testArray[key])
  89         throw "Error: bad value: " + value + " " + testArray[key];
  90     if (key !== i)
  91         throw "Error: bad value: " + key;
  92     i++
  93     if (i % 2 == 0)
  94         testArray[i] *= 2;
  95     if (i < 4)
  96         testArray.push(testArray.length)
  97     if (i == 4)
  98         delete testArray[4]
  99     if (i == 5)
 100         testArray[4] = 5
 101 } while (!done);
 102
 103 if (testArray.length !== i)
 104     throw "Error: bad value: " + i;
 105
 106 var value = entries.next().value;
 107 if (value !== undefined)
 108     throw "Error: bad value: " + value;