third_party/WebKit/LayoutTests/fast/js/var-declarations.html

   1 <p>This page tests var declarations inside various block structures and control statements.</pre>
   2 <pre id="console"></pre>
   3
   4 <script>
   5 if (window.testRunner)
   6     testRunner.dumpAsText();
   7
   8 function log(s)
   9 {
  10     document.getElementById("console").appendChild(document.createTextNode(s + "\n"));
  11 }
  12
  13 function shouldBe(a, b)
  14 {
  15     var evalA;
  16     try {
  17         evalA = eval(a);
  18     } catch (e) {
  19         evalA = e;
  20     }
  21
  22     if (evalA === b) {
  23         log("PASS: " + a + " should be " + b + " and is.");
  24     } else {
  25         log("FAIL: " + a + " should be " + b + " but instead is " + evalA + ".");
  26     }
  27 }
  28
  29 function testDeclarations(title)
  30 {
  31     var vars = [
  32         "v1",
  33         "v2",
  34         "v3",
  35         "v4",
  36         "v5",
  37         "v6",
  38         "v7",
  39         "v8",
  40         "v9"
  41     ];
  42
  43     log(title);
  44     log("-----");
  45     for (var i = 0; i < vars.length; ++i)
  46         shouldBe("'" + vars[i] + "' in window", true);
  47 }
  48
  49 testDeclarations("Before executing blocks containing var declarations: ");
  50
  51 {
  52     var v1;
  53 }
  54
  55 if (false) {
  56     var v2;
  57 }
  58
  59 switch (true) {
  60     case true: {
  61         var v3;
  62         break;
  63     }
  64     case false: {
  65         var v4;
  66         break;
  67     }
  68 }
  69
  70 for (var i = 0; i < 0; ++i) {
  71     var v5;
  72 }
  73
  74 do {
  75     var v6;
  76 } while(0);
  77
  78 while (0) {
  79     var v7;
  80 }
  81
  82 for (var p in {}) {
  83     var v8;
  84 }
  85
  86 with ({}) {
  87     var v9;
  88 }
  89
  90 log("");
  91 testDeclarations("After executing blocks containing var declarations: ");
  92
  93 </script>