auto_tests/tests/resize.js

   1 /**
   2  * @fileoverview Test cases for resizing.
   3  *
   4  * @author konigsberg@google.com (Robert Konigsberg)
   5  */
   6 var ResizeTestCase = TestCase("resize");
   7
   8 ResizeTestCase.prototype.setUp = function() {
   9   document.body.innerHTML = "<div id='graph'></div>";
  10 };
  11
  12 ResizeTestCase.prototype.tearDown = function() {
  13 };
  14
  15 ResizeTestCase.prototype.testResizeMaintainsMouseOperations = function() {
  16   document.body.innerHTML =
  17       '<div id="graph" style="width: 640px; height: 480px;"></div>' +
  18       '</div>';
  19   var graph = document.getElementById("graph");
  20
  21   var callbackCount = 0;
  22   var callback = function() {
  23     callbackCount++;
  24   }
  25
  26   // Strum the mouse along the y-coordinate y, from 0 to x2. These are DOM values.
  27   var strum = function(g, y, x2) {
  28     DygraphOps.dispatchMouseDown_Point(g, 0, y);
  29     for (var x = 0; x < x2; x++) {
  30       DygraphOps.dispatchMouseMove_Point(g, x, y);
  31     }
  32     DygraphOps.dispatchMouseUp_Point(g, x2 - 1, y);
  33   }
  34
  35   g = new Dygraph(graph,
  36       "Date,Y\n" +
  37       "2010/01/01,100\n" +
  38       "2010/02/01,200\n" +
  39       "2010/03/01,300\n" +
  40       "2010/04/01,400\n" +
  41       "2010/05/01,300\n" +
  42       "2010/06/01,100\n",
  43       { highlightCallback : callback });
  44
  45   strum(g, 300, 640);
  46   assertEquals(6, callbackCount);
  47
  48   document.getElementById("graph").style.width = "500px";
  49   g.resize();
  50
  51   callbackCount = 0;
  52   strum(g, 300, 500);
  53   assertEquals(6, callbackCount);
  54 };