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
  11 // all copies or substantial portions of the Software.
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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 MissingPointsTestCase._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(MissingPointsTestCase._origFunc(canvas));
  35   }
  36 };
  37
  38 MissingPointsTestCase.prototype.tearDown = function() {
  39   Dygraph.getContext = MissingPointsTestCase._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   assertEquals(2, CanvasAssertions.numLinesDrawn(htx, '#0000ff'));
  68   CanvasAssertions.assertLineDrawn(htx, [56, 275], [161, 212],
  69       { strokeStyle: '#0000ff', });
  70   CanvasAssertions.assertLineDrawn(htx, [370, 87], [475, 25],
  71       { strokeStyle: '#0000ff', });
  72 }
  73
  74 MissingPointsTestCase.prototype.testSeparatedPointsDontDraw_expanded_connected = function() {
  75   var graph = document.getElementById("graph");
  76   var g = new Dygraph(
  77       graph,
  78       [[0, 10],
  79        [1, 11],
  80        [2, null],
  81        [3, 13],
  82        [4, 14]],
  83       { colors: ['blue'], connectSeparatedPoints: true});
  84   var htx = g.hidden_ctx_;
  85   var num_lines = 0;
  86
  87   assertEquals(3, CanvasAssertions.numLinesDrawn(htx, '#0000ff'));
  88   CanvasAssertions.assertConsecutiveLinesDrawn(htx,
  89       [[56, 275], [161, 212], [370, 87], [475, 25]],
  90       { strokeStyle: '#0000ff' });
  91 }
  92
  93 /**
  94  * At the time of writing this test, the blue series is only points, and not lines.
  95  */
  96 MissingPointsTestCase.prototype.testConnectSeparatedPoints = function() {
  97   var g = new Dygraph(
  98     document.getElementById("graph"),
  99     [
 100       [1, null, 3],
 101       [2, 2, null],
 102       [3, null, 7],
 103       [4, 5, null],
 104       [5, null, 5],
 105       [6, 3, null]
 106     ],
 107     {
 108       connectSeparatedPoints: true,
 109       drawPoints: true,
 110       colors: ['red', 'blue']
 111     }
 112   );
 113
 114   var htx = g.hidden_ctx_;
 115
 116   assertEquals(2, CanvasAssertions.numLinesDrawn(htx, '#0000ff'));
 117   CanvasAssertions.assertConsecutiveLinesDrawn(htx,
 118       [[56, 225], [223, 25], [391, 125]],
 119       { strokeStyle: '#0000ff' });
 120
 121   assertEquals(2, CanvasAssertions.numLinesDrawn(htx, '#ff0000'));
 122   CanvasAssertions.assertConsecutiveLinesDrawn(htx,
 123       [[140, 275], [307, 125], [475, 225]],
 124       { strokeStyle: '#ff0000' });
 125 }
 126
 127 /**
 128  * At the time of writing this test, the blue series is only points, and not lines.
 129  */
 130 MissingPointsTestCase.prototype.testConnectSeparatedPointsWithNan = function() {
 131   var g = new Dygraph(
 132     document.getElementById("graph"),
 133     "x,A,B  \n" +
 134     "1,,3   \n" +
 135     "2,2,   \n" +
 136     "3,,5   \n" +
 137     "4,4,   \n" +
 138     "5,,7   \n" +
 139     "6,NaN, \n" +
 140     "8,8,   \n" +
 141     "10,10, \n",
 142     {
 143       connectSeparatedPoints: true,
 144       drawPoints: true,
 145       colors: ['red', 'blue']
 146     }
 147   );
 148
 149   var htx = g.hidden_ctx_;
 150
 151   // Red has two disconnected line segments
 152   assertEquals(2, CanvasAssertions.numLinesDrawn(htx, '#ff0000'));
 153   CanvasAssertions.assertLineDrawn(htx, [102, 275], [195, 212], { strokeStyle: '#ff0000' });
 154   CanvasAssertions.assertLineDrawn(htx, [381, 87], [475, 25], { strokeStyle: '#ff0000' });
 155
 156   // Blue's lines are consecutive, however.
 157   assertEquals(2, CanvasAssertions.numLinesDrawn(htx, '#0000ff'));
 158   CanvasAssertions.assertConsecutiveLinesDrawn(htx,
 159       [[56, 244], [149, 181], [242, 118]],
 160       { strokeStyle: '#0000ff' });
 161 }
 162
 163 /* These lines contain awesome powa!
 164   var lines = CanvasAssertions.getLinesDrawn(htx, {strokeStyle: "#0000ff"});
 165   for (var idx = 0; idx < lines.length; idx++) {
 166     var line = lines[idx];
 167     console.log(line[0].args, line[1].args, line[0].properties.strokeStyle);
 168   }
 169 */