third_party/WebKit/LayoutTests/fast/forms/range/range-value-rounding.html

   1 <head>
   2 <script src="../../../resources/js-test.js"></script>
   3 </head>
   4 <body>
   5 <input id="foo" type=range step=0.1 value=0.6>
   6 <div id="console"></div>
   7 <div id="sliders"></div>
   8 <script>
   9 description("<a href='http://bugs.webkit.org/show_bug.cgi?id=80009'>80009 Introduce Decimal arithmetic to fix rounding errors in number/range input types</a>");
  10
  11 function createSample(step, value, max)
  12 {
  13     var container = document.createElement("span");
  14     container.innerHTML = '<input type=range min=0 max=' + max + ' step=' + step + ' value=' + value + '><br>';
  15     document.getElementById("sliders").appendChild(container);
  16     return container.firstChild;
  17 }
  18
  19 var zeros = "0.";
  20 for (var exponent = 0; exponent < 15; ++exponent) {
  21     var step = zeros + "1";
  22     for (var digit = 1; digit <= 9; ++digit) {
  23         var value = zeros + digit.toString();
  24         var sample = 'createSample("' + step + '", "' + value + '", "1e-' + exponent + '")';
  25         var stepExponent = exponent + 1;
  26         shouldBeEqualToString(sample + '.value', stepExponent >= 7 ? digit + "e-" + stepExponent : value);
  27         shouldBe(sample + '.valueAsNumber', value);
  28     }
  29     zeros += "0";
  30 }
  31
  32 // Remove generated sliders.
  33 document.getElementById("sliders").innerHTML = "";
  34 </script>
  35 </body>