tests/stress/map-iterators-next.js

   1 // This test checks the behavior of the iterator.next methods on Map objects
   2
   3 var testArray = [1,2,3,4,5,6]
   4 var testMap = new Map();
   5 for (var [key, value] of testArray.entries()) {
   6     testMap.set(key, value);
   7 }
   8 var keys = testMap.keys();
   9 var i = 0;
  10 while (true) {
  11     var {done, value: key} = keys.next();
  12     if (done)
  13         break;
  14     if (key >= testArray.length)
  15         throw "Error: bad value: " + key;
  16     i++;
  17 }
  18
  19 if (testMap.size !== i)
  20     throw "Error: bad value: " + i;
  21
  22 var value = keys.next().value;
  23 if (value !== undefined)
  24     throw "Error: bad value: " + value;
  25
  26 var values = testMap.values();
  27 var i = 0;
  28 while (true) {
  29     var {done, value} = values.next();
  30     if (done)
  31         break;
  32     i++;
  33     if (testArray.indexOf(value) === -1)
  34         throw "Error: bad value: " + value;
  35 }
  36
  37 if (testMap.size !== i)
  38     throw "Error: bad value: " + i;
  39
  40 var value = values.next().value;
  41 if (value !== undefined)
  42     throw "Error: bad value: " + value;
  43
  44 var entries = testMap.entries();
  45 var i = 0;
  46 do {
  47     var {done, value: entry} = entries.next();
  48     if (done)
  49         break;
  50     var [key, value] = entry;
  51     if (value !== testMap.get(key))
  52         throw "Error: bad value: " + value + " " + testMap.get(key);
  53     if (key >= testArray.length)
  54         throw "Error: bad value: " + key;
  55     i++;
  56     if (testArray.indexOf(value) === -1)
  57         throw "Error: bad value: " + value + " " + i;
  58 } while (!done);
  59
  60 if (testMap.size !== i)
  61     throw "Error: bad value: " + i;
  62
  63 var value = entries.next().value;
  64 if (value !== undefined)
  65     throw "Error: bad value: " + value;
  66
  67 var entries = testMap.entries();
  68 var i = 0;
  69 do {
  70     var {done, value: entry} = entries.next();
  71     if (done)
  72         break;
  73     var [key, value] = entry;
  74     if (value !== testMap.get(key))
  75         throw "Error: bad value: " + value + " " + testMap.get(key);
  76     i++;
  77     if (i % 4 === 0)
  78         testMap.set(100000 + i, i);
  79 } while (!done);
  80
  81 if (testMap.size !== i)
  82     throw "Error: bad value: " + i;
  83
  84 var value = entries.next().value;
  85 if (value !== undefined)
  86     throw "Error: bad value: " + value;
  87
  88 function otherKey(key) {
  89     return (key + 1) % testArray.length;
  90 }
  91
  92 var entries = testMap.entries();
  93 var i = 0;
  94 do {
  95     var {done, value: entry} = entries.next();
  96     if (done)
  97         break;
  98     var [key, value] = entry;
  99     if (value !== testMap.get(key))
 100         throw "Error: bad value: " + value + " " + testMap.get(key);
 101     i++;
 102     if (i % 4 === 0)
 103         testMap.delete(otherKey(key));
 104 } while (!done);
 105
 106 if (testMap.size !== i)
 107     throw "Error: bad value: " + i;
 108
 109 var value = entries.next().value;
 110 if (value !== undefined)
 111     throw "Error: bad value: " + value;