third_party/WebKit/LayoutTests/fast/canvas/canvas-lineDash-input-sequence.html

   1 <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
   2 <html>
   3 <head>
   4 <link rel="help" href="http://www.w3.org/TR/2013/WD-2dcontext2-20130528/#dom-context-2d-setlinedash">
   5 <script src="../../resources/js-test.js"></script>
   6 </head>
   7 <body>
   8 <script>
   9 description("Test that setLineDash converts input argument into a Web IDL sequence");
  10
  11 var canvas = document.createElement('canvas');
  12 document.body.appendChild(canvas);
  13 canvas.setAttribute('width', '700');
  14 canvas.setAttribute('height', '700');
  15 var ctx = canvas.getContext('2d');
  16
  17 var arrayValues = [5, 15, 25];
  18
  19 function createTestArray(arrayType) {
  20   var array;
  21   if (arrayType == Object) {
  22     // Test a "sequence" (Object with length property).
  23     array = {length: arrayValues.length};
  24   } else {
  25     array = new arrayType(arrayValues.length);
  26   }
  27
  28   for (var i = 0; i < arrayValues.length; ++i)
  29       array[i] = arrayValues[i]
  30   return array;
  31 }
  32
  33 var lineDash;
  34 var inputArray;
  35 function checkLineDash(testArray, shouldFail) {
  36     inputArray = testArray;
  37     // Reset line dash.
  38     ctx.setLineDash([]);
  39     // Set line dash.
  40     if (shouldFail) {
  41         shouldThrow("ctx.setLineDash(inputArray)", "'TypeError: Failed to execute \\'setLineDash\\' on \\'CanvasRenderingContext2D\\': The 1st argument is neither an array, nor does it have indexed properties.'");
  42     } else {
  43         ctx.setLineDash(inputArray);
  44         lineDash = ctx.getLineDash();
  45         for (var i = 0; i < arrayValues.length; ++i)
  46             shouldBe("lineDash[" + i + "]", "" + arrayValues[i]);
  47     }
  48 }
  49
  50 var arrayTypes = [Array, Int8Array, Int16Array, Int32Array, Uint8Array, Uint16Array, Uint32Array, Float32Array, Float64Array, Uint8ClampedArray, Object];
  51
  52 // Success cases.
  53 for (var i = 0; i < arrayTypes.length; ++i) {
  54     debug("* Test passing a " + arrayTypes[i].name + " as input.");
  55     checkLineDash(createTestArray(arrayTypes[i]), false);
  56 }
  57
  58 // Failure cases.
  59 debug("* Test passing a Date as input.");
  60 checkLineDash(new Date(), true);
  61 debug("* Test passing a RegExp as input.");
  62 checkLineDash(new RegExp(), true);
  63 debug("* Test passing an Object without length as input.");
  64 checkLineDash({test: 1}, true);
  65 debug("* Test passing a Number as input.");
  66 checkLineDash(3, true);
  67 debug("* Test passing a String as input.");
  68 checkLineDash("Test", true);
  69 debug("* Test passing a Boolean as input.");
  70 checkLineDash(true, true);
  71 debug("* Test passing null as input.");
  72 checkLineDash(null, true);
  73 debug("* Test passing undefined as input.");
  74 checkLineDash(undefined, true);
  75 </script>
  76 </body>
  77 </html>