auto_tests/tests/custom_bars.js

   1 // Copyright 2011 Google Inc. All Rights Reserved.
   2
   3 /**
   4  * @fileoverview Regression test based on some strange customBars data.
   5  * @author danvk@google.com (Dan Vanderkam)
   6  */
   7 var CustomBarsTestCase = TestCase("custom-bars");
   8
   9 CustomBarsTestCase._origFunc = Dygraph.getContext;
  10 CustomBarsTestCase.prototype.setUp = function() {
  11   document.body.innerHTML = "<div id='graph'></div>";
  12   Dygraph.getContext = function(canvas) {
  13     return new Proxy(CustomBarsTestCase._origFunc(canvas));
  14   }
  15 };
  16
  17 CustomBarsTestCase.prototype.tearDown = function() {
  18   Dygraph.getContext = CustomBarsTestCase._origFunc;
  19 };
  20
  21 // This test used to reliably produce an infinite loop.
  22 CustomBarsTestCase.prototype.testCustomBarsNoHang = function() {
  23   var opts = {
  24     width: 480,
  25     height: 320,
  26     customBars: true
  27   };
  28   var data = "X,Y1,Y2\n" +
  29     "1,1178.0;1527.5;1856.6,0;22365658;0\n" +
  30     "2,1253.0;1303.3;1327.3,0;22368228;0\n" +
  31     "3,878.0;1267.0;1357.1,0;22368895;0\n" +
  32     "4,1155.0;1273.1;1303.5,0;22369665;0\n" +
  33     "5,1089.0;1294.8;1355.3,0;22370160;0\n" +
  34     "6,1088.0;1268.6;1336.1,0;22372346;0\n" +
  35     "7,1141.0;1269.1;1301.2,0;22373318;0\n" +
  36     "8,1072.0;1255.8;1326.2,0;22374310;0\n" +
  37     "9,1209.0;1309.2;1351.8,0;22374924;0\n" +
  38     "10,1230.0;1303.9;1332.6,0;22380163;0\n" +
  39     "11,1014.0;1263.5;1330.8,0;22381117;0\n" +
  40     "12,853.0;1215.6;1330.6,0;22381556;0\n" +
  41     "13,1134.0;1581.9;1690.1,0;22384631;0\n" +
  42     "14,1113.0;1540.1;1676.5,0;22386933;0\n" +
  43     "15,1130.0;1542.7;1678.3,0;22393459;0\n" +
  44     "18,1582.0;1644.4;1690.2,0;22395914;0\n" +
  45     "19,878.0;1558.3;1708.1,0;22397732;0\n" +
  46     "20,1076.0;1598.4;1723.8,0;22397886;0\n" +
  47     "21,1077.0;1574.0;1685.3,0;22398659;0\n" +
  48     "22,1118.0;1590.4;1697.6,0;22399009;0\n" +
  49     "23,1031.0;1473.1;1644.9,0;22401969;0\n" +
  50     "24,1090.0;1480.7;1640.0,0;22417989;0\n" +
  51     "25,1592.0;1681.7;1714.4,0;22422819;0\n" +
  52     "26,1251.0;1657.8;1750.6,0;22423681;0\n" +
  53     "27,1144.0;1660.9;1776.2,0;22426947;0\n" +
  54     "28,1178.0;1642.4;1745.6,0;22428238;0\n" +
  55     "29,1169.0;1649.1;1757.5,0;22429524;0\n" +
  56     "30,1150.0;1596.1;1746.7,0;22433472;0\n" +
  57     "31,1099.0;1586.5;1732.8,0;22434308;0\n" +
  58     "32,1120.0;1456.0;1620.3,0;22434821;0\n" +
  59     "33,1640.0;1687.7;1709.0,0;22434882;0\n" +
  60     "34,1671.0;1712.1;1733.7,0;22435116;0\n" +
  61     "35,,0;22437620;0\n";
  62   var graph = document.getElementById("graph");
  63   var g = new Dygraph(graph, data, opts);
  64 };
  65
  66 // Regression test for http://code.google.com/p/dygraphs/issues/detail?id=201
  67 CustomBarsTestCase.prototype.testCustomBarsZero = function() {
  68   var opts = {
  69     customBars: true
  70   };
  71   var data = "X,Y1,Y2\n" +
  72 "1,1;2;3,0;0;0\n" +
  73 "2,2;3;4,0;0;0\n" +
  74 "3,1;3;5,0;0;0\n";
  75
  76   var graph = document.getElementById("graph");
  77   var g = new Dygraph(graph, data, opts);
  78
  79   var range = g.yAxisRange();
  80   assertTrue('y-axis must include 0', range[0] <= 0);
  81   assertTrue('y-axis must include 5', range[1] >= 5);
  82 };
  83
  84 // Regression test for http://code.google.com/p/dygraphs/issues/detail?id=229
  85 CustomBarsTestCase.prototype.testCustomBarsAtTop = function() {
  86   var g = new Dygraph(document.getElementById("graph"),
  87       [
  88         [1, [10, 10, 100]],
  89         [1, [10, 10, 100]],
  90         [2, [15, 20, 110]],
  91         [3, [10, 30, 100]],
  92         [4, [15, 40, 110]],
  93         [5, [10,120, 100]],
  94         [6, [15, 50, 110]],
  95         [7, [10, 70, 100]],
  96         [8, [15, 90, 110]],
  97         [9, [10, 50, 100]]
  98       ], {
  99         width: 500, height: 350,
 100         customBars: true,
 101         errorBars: true,
 102         drawXGrid: false,
 103         drawYGrid: false,
 104         drawXAxis: false,
 105         drawYAxis: false,
 106         valueRange: [0, 120],
 107         fillAlpha: 0.15,
 108         colors: [ '#00FF00' ]
 109       });
 110
 111   var sampler = new PixelSampler(g);
 112   assertEquals([0, 255, 0, 38], sampler.colorAtCoordinate(5, 60));
 113 };
 114
 115 // Tests that custom bars work with log scale.
 116 CustomBarsTestCase.prototype.testCustomBarsLogScale = function() {
 117   var g = new Dygraph(document.getElementById("graph"),
 118       [
 119         [1, [10, 10, 100]],
 120         [5, [15,120, 80]],
 121         [9, [10, 50, 100]]
 122       ], {
 123         width: 500, height: 350,
 124         customBars: true,
 125         errorBars: true,
 126         valueRange: [1, 120],
 127         drawXGrid: false,
 128         drawYGrid: false,
 129         drawXAxis: false,
 130         drawYAxis: false,
 131         fillAlpha: 1.0,
 132         logscale: true,
 133         colors: [ '#00FF00' ]
 134       });
 135
 136   // The following assertions describe the sides of the custom bars, which are
 137   // drawn in two halves.
 138   CanvasAssertions.assertConsecutiveLinesDrawn(
 139       g.hidden_ctx_,
 140       [[0, 13.329014086362069],
 141        [247.5, 29.64240889852502],
 142        [247.5, 152.02209814465604],
 143        [0, 181.66450704318103]],
 144       { fillStyle: "#00ff00" });
 145
 146   CanvasAssertions.assertConsecutiveLinesDrawn(
 147       g.hidden_ctx_,
 148       [[247.5, 29.64240889852502],
 149        [495, 13.329014086362069],
 150        [495, 181.66450704318103],
 151        [247.5, 152.02209814465604]],
 152       { fillStyle: "#00ff00" });
 153 };
 154
 155 CustomBarsTestCase.prototype.testCustomBarsWithNegativeValuesInLogScale =
 156     function() {
 157   var graph = document.getElementById("graph");
 158
 159   var count = 0;
 160   var drawPointCallback = function() {
 161     count++;
 162   };
 163
 164   var g = new Dygraph(graph,
 165       [
 166         [1, [10, 20,30]],
 167         [2, [5, 10, 15]],
 168         [3, [-1, 5, 10]]
 169       ],
 170       {
 171         drawPoints: true,
 172         drawPointCallback : drawPointCallback,
 173         customBars: true
 174       });
 175
 176   // Normally all three points would be drawn.
 177   assertEquals(3, count);
 178   count = 0;
 179
 180   // In log scale, the third point shouldn't be shown.
 181   g.updateOptions({ logscale : true });
 182   assertEquals(2, count);
 183 };