third_party/WebKit/LayoutTests/inspector/console/console-log-side-effects.html

   1 <html>
   2 <head>
   3 <script>
   4
   5 function overrideToString()
   6 {
   7     console.error("FAIL: side effects, should not be called.");
   8     return "FAIL";
   9 }
  10
  11 function test()
  12 {
  13     [Object, Array, Number, Boolean, String, Uint32Array, Node, Element].forEach(function(type) {
  14         type.prototype.toString = overrideToString;
  15     });
  16
  17     console.log("string");
  18     console.log(42);
  19     console.log(false);
  20     console.log(undefined);
  21     console.log(null);
  22     console.log(NaN);
  23     console.log(-Infinity);
  24     console.log(-0);
  25     console.log(new Number(42));
  26     console.log(new Number(-42.42e-12));
  27     console.log(new Boolean(true));
  28     console.log(new String("foo"));
  29     console.log({ __proto__: null });
  30     console.log(window);
  31
  32     // Test DOMWrapper object.
  33     var node = document.getElementById("node");
  34     node.toString = overrideToString;
  35     node.__proto__.toString = overrideToString;
  36     console.log(node);
  37
  38     var obj = { foo: 1, bar: 2 };
  39     var arr = [1, 2, 3];
  40     console.log(obj);
  41     console.log(arr);
  42
  43     console.log(new Uint32Array([1, 2, 3]));
  44
  45     arr.push(obj);
  46     console.log(arr);
  47
  48     var overridden = { toString: overrideToString };
  49     console.log(overridden);
  50
  51     arr.push(overridden);
  52     console.log(arr);
  53
  54     // Test recursive arrays.
  55     var a1 = [[1, [[2], 3], [[[[4]]], 5]]];
  56     var a2 = []; a2[3] = null; a2[5] = NaN;
  57     a1.push(a2);
  58     a2.push(a1);
  59     var a3 = [[a1], [[a2]]];
  60     a3.push(a3);
  61     console.log(a3);
  62
  63     // This used to timeout.
  64     var timeout = { toString: function() { while (true) {} } };
  65     console.log(timeout);
  66
  67     arr.push(timeout);
  68     console.log(arr);
  69
  70     // This used to crash out of memory.
  71     const maxArrayLength = 4294967295;
  72     for (var i = 100000; i < maxArrayLength; i *= 10) {
  73         arr[i] = i;
  74         console.log(arr);
  75     }
  76     arr[maxArrayLength - 1] = a3;
  77     console.log(arr);
  78
  79     // Test array length limit.
  80     const arrayLengthLimit = 10000;
  81     var arr = [];
  82     for (var i = 0; i < arrayLengthLimit + 1; ++i)
  83         arr[i] = i;
  84     console.log(arr);
  85
  86     // Test array stack depth limit.
  87     var arr = [];
  88     for (var i = 0; i < arrayLengthLimit; ++i)
  89         arr = [arr];
  90     console.log(arr);
  91 }
  92
  93 function runTest()
  94 {
  95     if (window.testRunner) {
  96         testRunner.dumpAsText();
  97         testRunner.waitUntilDone();
  98     }
  99     try {
 100         test();
 101     } finally {
 102         if (window.testRunner)
 103             testRunner.notifyDone();
 104     }
 105 }
 106
 107 </script>
 108 </head>
 109 <body onload="runTest()">
 110 <p id ="node">
 111 Tests various extreme usages of console.log()
 112 </p>
 113 </body>
 114 </html>