auto_tests/tests/callback.js

   1 /**
   2  * @fileoverview Test cases for the callbacks.
   3  *
   4  * @author uemit.seren@gmail.com (Ümit Seren)
   5  */
   6
   7 var CallbackTestCase = TestCase("callback");
   8
   9 CallbackTestCase.prototype.setUp = function() {
  10   document.body.innerHTML = "<div id='graph'></div>";
  11 };
  12
  13 CallbackTestCase.prototype.tearDown = function() {
  14 };
  15
  16 var data = "X,a\,b,c\n" +
  17     "10,-1,1,2\n" +
  18     "11,0,3,1\n" +
  19     "12,1,4,2\n" +
  20     "13,0,2,3\n";
  21
  22
  23 /**
  24  * This tests that when the function idxToRow_ returns the proper row and the onHiglightCallback
  25  * is properly called when the first series is hidden (setVisibility = false)
  26  *
  27  */
  28 CallbackTestCase.prototype.testHighlightCallbackIsCalled = function() {
  29   var h_row;
  30   var h_pts;
  31
  32   var highlightCallback = function(e, x, pts, row) {
  33     h_row = row;
  34     h_pts = pts;
  35   };
  36
  37   var graph = document.getElementById("graph");
  38   var g = new Dygraph(graph, data,
  39       {
  40         width: 100,
  41         height : 100,
  42         visibility: [false, true, true],
  43         highlightCallback : highlightCallback,
  44       });
  45
  46   DygraphOps.dispatchMouseMove(g, 13, 10);
  47
  48   //check correct row is returned
  49   assertEquals(3, h_row);
  50   //check there are only two points (because first series is hidden)
  51   assertEquals(2, h_pts.length);
  52 };
  53
  54
  55 /**
  56  * Test that drawPointCallback isn't called when drawPoints is false
  57  */
  58 CallbackTestCase.prototype.testDrawPointCallback_disabled = function() {
  59   var called = false;
  60
  61   var callback = function() {
  62     called = true;
  63   };
  64
  65   var graph = document.getElementById("graph");
  66   var g = new Dygraph(graph, data, {
  67       drawPointCallback : callback,
  68     });
  69
  70   assertFalse(called);
  71 };
  72
  73 /**
  74  * Test that drawPointCallback is called when drawPoints is true
  75  */
  76 CallbackTestCase.prototype.testDrawPointCallback_enabled = function() {
  77   var called = false;
  78
  79   var callback = function() {
  80     called = true;
  81   };
  82
  83   var graph = document.getElementById("graph");
  84   var g = new Dygraph(graph, data, {
  85       drawPoints : true,
  86       drawPointCallback : callback
  87     });
  88
  89   assertTrue(called);
  90 };
  91
  92 /**
  93  * Test that drawPointCallback is called when drawPoints is true
  94  */
  95 CallbackTestCase.prototype.testDrawPointCallback_pointSize = function() {
  96   var pointSize = 0;
  97   var count = 0;
  98
  99   var callback = function(g, seriesName, canvasContext, cx, cy, color, pointSizeParam) {
 100     pointSize = pointSizeParam;
 101     count++;
 102   };
 103
 104   var graph = document.getElementById("graph");
 105   var g = new Dygraph(graph, data, {
 106       drawPoints : true,
 107       drawPointCallback : callback
 108     });
 109
 110   assertEquals(1.5, pointSize);
 111   assertEquals(12, count); // one call per data point.
 112
 113   var g = new Dygraph(graph, data, {
 114       drawPoints : true,
 115       drawPointCallback : callback,
 116       pointSize : 8
 117     });
 118
 119   assertEquals(8, pointSize);
 120 };
 121
 122 /**
 123  * This tests that when the function idxToRow_ returns the proper row and the onHiglightCallback
 124  * is properly called when the first series is hidden (setVisibility = false)
 125  *
 126  */
 127 CallbackTestCase.prototype.testDrawHighlightPointCallbackIsCalled = function() {
 128   var called = false;
 129
 130   var drawHighlightPointCallback  = function() {
 131     called = true;
 132   };
 133
 134   var graph = document.getElementById("graph");
 135   var g = new Dygraph(graph, data,
 136       {
 137         width: 100,
 138         height : 100,
 139         drawHighlightPointCallback : drawHighlightPointCallback
 140       });
 141
 142   assertFalse(called);
 143   DygraphOps.dispatchMouseMove(g, 13, 10);
 144   assertTrue(called);
 145 };