auto_tests/tests/missing_points.js

   1 // Copyright (c) 2012 Google, Inc.
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   9 //
  10 // The above copyright notice and this permission notice shall be included in
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  14 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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  19 // THE SOFTWARE.
  20
  21 /**
  22  * @fileoverview Test cases for drawing lines with missing points.
  23  *
  24  * @author konigsberg@google.com (Robert Konigsberg)
  25  */
  26 var ZERO_TO_FIFTY = [[ 10, 0 ] , [ 20, 50 ]];
  27
  28 var MissingPointsTestCase = TestCase("missing-points");
  29
  30 var _origFunc = Dygraph.getContext;
  31 MissingPointsTestCase.prototype.setUp = function() {
  32   document.body.innerHTML = "<div id='graph'></div>";
  33   Dygraph.getContext = function(canvas) {
  34     return new Proxy(_origFunc(canvas));
  35   }
  36 };
  37
  38 MissingPointsTestCase.prototype.tearDown = function() {
  39   Dygraph.getContext = _origFunc;
  40 };
  41
  42 MissingPointsTestCase.prototype.testSeparatedPointsDontDraw = function() {
  43   var graph = document.getElementById("graph");
  44   var g = new Dygraph(
  45       graph,
  46       [[1, 10, 11],
  47        [2, 11, null],
  48        [3, 12, 13]],
  49       { colors: ['red', 'blue']});
  50   var htx = g.hidden_ctx_;
  51   assertEquals(2, CanvasAssertions.numLinesDrawn(htx, '#ff0000'));
  52   assertEquals(0, CanvasAssertions.numLinesDrawn(htx, '#0000ff'));
  53 }
  54
  55 MissingPointsTestCase.prototype.testSeparatedPointsDontDraw_expanded = function() {
  56   var graph = document.getElementById("graph");
  57   var g = new Dygraph(
  58       graph,
  59       [[0, 10],
  60        [1, 11],
  61        [2, null],
  62        [3, 13],
  63        [4, 14]],
  64       { colors: ['blue']});
  65   var htx = g.hidden_ctx_;
  66   /*
  67   var num_lines = 0;
  68   var lines = CanvasAssertions.getLinesDrawn(htx);
  69   for (var idx = 0; idx < lines.length; idx++) {
  70     var line = lines[idx];
  71     var color = line[1].properties.strokeStyle;
  72     if (color === "#ff0000" || color === "#0000ff") {
  73       console.log(line[0].args, line[1].args, color);
  74     }
  75   }
  76   */
  77
  78   assertEquals(2, CanvasAssertions.numLinesDrawn(htx, '#0000ff'));
  79   CanvasAssertions.assertLineDrawn(htx, [56, 275], [161, 212],
  80       { strokeStyle: '#0000ff', });
  81   CanvasAssertions.assertLineDrawn(htx, [370, 87], [475, 25],
  82       { strokeStyle: '#0000ff', });
  83 }
  84
  85 MissingPointsTestCase.prototype.testSeparatedPointsDontDraw_expanded_connected = function() {
  86   var graph = document.getElementById("graph");
  87   var g = new Dygraph(
  88       graph,
  89       [[0, 10],
  90        [1, 11],
  91        [2, null],
  92        [3, 13],
  93        [4, 14]],
  94       { colors: ['blue'], connectSeparatedPoints: true});
  95   var htx = g.hidden_ctx_;
  96   var num_lines = 0;
  97   var lines = CanvasAssertions.getLinesDrawn(htx);
  98   for (var idx = 0; idx < lines.length; idx++) {
  99     var line = lines[idx];
 100     var color = line[1].properties.strokeStyle;
 101     if (color === "#ff0000" || color === "#0000ff") {
 102       console.log(line[0].args, line[1].args, color);
 103     }
 104   }
 105
 106   assertEquals(3, CanvasAssertions.numLinesDrawn(htx, '#0000ff'));
 107   CanvasAssertions.assertLineDrawn(htx, [56, 275], [161, 212],
 108       { strokeStyle: '#0000ff', });
 109   CanvasAssertions.assertLineDrawn(htx, [161, 212], [370, 87],
 110       { strokeStyle: '#0000ff', });
 111   CanvasAssertions.assertLineDrawn(htx, [370, 87], [475, 25],
 112       { strokeStyle: '#0000ff', });
 113 }
 114
 115 /**
 116  * At the time of writing this test, the blue series is only points, and not lines.
 117  */
 118 MissingPointsTestCase.prototype.testConnectSeparatedPoints = function() {
 119   var g = new Dygraph(
 120     document.getElementById("graph"),
 121     [
 122       [1, null, 3],
 123       [2, 2, null],
 124       [3, null, 7],
 125       [4, 5, null],
 126       [5, null, 5],
 127       [6, 3, null]
 128     ],
 129     {
 130       connectSeparatedPoints: true,
 131       drawPoints: true,
 132       colors: ['red', 'blue']
 133     }
 134   );
 135   fail("write assertions");
 136 }
 137
 138 /**
 139  * At the time of writing this test, the blue series is only points, and not lines.
 140  */
 141 MissingPointsTestCase.prototype.testConnectSeparatedPointsWithNan = function() {
 142   var g = new Dygraph(
 143     document.getElementById("graph"),
 144     "x,A,B  \n" +
 145     "1,,3   \n" +
 146     "2,2,   \n" +
 147     "3,,5   \n" +
 148     "4,4,   \n" +
 149     "5,,7   \n" +
 150     "6,NaN, \n" +
 151     "8,8,   \n" +
 152     "10,10, \n",
 153     {
 154       connectSeparatedPoints: true,
 155       drawPoints: true,
 156       colors: ['red', 'blue']
 157     }
 158   );
 159   fail("write assertions");
 160 }