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 import Dygraph from '../../src/dygraph';
   8 import * as utils from '../../src/dygraph-utils';
   9 import CanvasAssertions from './CanvasAssertions';
  10 import PixelSampler from './PixelSampler';
  11 import Proxy from './Proxy';
  12
  13 describe("custom-bars", function() {
  14
  15 cleanupAfterEach();
  16
  17 var _origFunc = utils.getContext;
  18 beforeEach(function() {
  19   utils.getContext = function(canvas) {
  20     return new Proxy(_origFunc(canvas));
  21   }
  22 });
  23
  24 afterEach(function() {
  25   utils.getContext = _origFunc;
  26 });
  27
  28 // This test used to reliably produce an infinite loop.
  29 it('testCustomBarsNoHang', function() {
  30   var opts = {
  31     width: 480,
  32     height: 320,
  33     customBars: true
  34   };
  35   var data = "X,Y1,Y2\n" +
  36     "1,1178.0;1527.5;1856.6,0;22365658;0\n" +
  37     "2,1253.0;1303.3;1327.3,0;22368228;0\n" +
  38     "3,878.0;1267.0;1357.1,0;22368895;0\n" +
  39     "4,1155.0;1273.1;1303.5,0;22369665;0\n" +
  40     "5,1089.0;1294.8;1355.3,0;22370160;0\n" +
  41     "6,1088.0;1268.6;1336.1,0;22372346;0\n" +
  42     "7,1141.0;1269.1;1301.2,0;22373318;0\n" +
  43     "8,1072.0;1255.8;1326.2,0;22374310;0\n" +
  44     "9,1209.0;1309.2;1351.8,0;22374924;0\n" +
  45     "10,1230.0;1303.9;1332.6,0;22380163;0\n" +
  46     "11,1014.0;1263.5;1330.8,0;22381117;0\n" +
  47     "12,853.0;1215.6;1330.6,0;22381556;0\n" +
  48     "13,1134.0;1581.9;1690.1,0;22384631;0\n" +
  49     "14,1113.0;1540.1;1676.5,0;22386933;0\n" +
  50     "15,1130.0;1542.7;1678.3,0;22393459;0\n" +
  51     "18,1582.0;1644.4;1690.2,0;22395914;0\n" +
  52     "19,878.0;1558.3;1708.1,0;22397732;0\n" +
  53     "20,1076.0;1598.4;1723.8,0;22397886;0\n" +
  54     "21,1077.0;1574.0;1685.3,0;22398659;0\n" +
  55     "22,1118.0;1590.4;1697.6,0;22399009;0\n" +
  56     "23,1031.0;1473.1;1644.9,0;22401969;0\n" +
  57     "24,1090.0;1480.7;1640.0,0;22417989;0\n" +
  58     "25,1592.0;1681.7;1714.4,0;22422819;0\n" +
  59     "26,1251.0;1657.8;1750.6,0;22423681;0\n" +
  60     "27,1144.0;1660.9;1776.2,0;22426947;0\n" +
  61     "28,1178.0;1642.4;1745.6,0;22428238;0\n" +
  62     "29,1169.0;1649.1;1757.5,0;22429524;0\n" +
  63     "30,1150.0;1596.1;1746.7,0;22433472;0\n" +
  64     "31,1099.0;1586.5;1732.8,0;22434308;0\n" +
  65     "32,1120.0;1456.0;1620.3,0;22434821;0\n" +
  66     "33,1640.0;1687.7;1709.0,0;22434882;0\n" +
  67     "34,1671.0;1712.1;1733.7,0;22435116;0\n" +
  68     "35,,0;22437620;0\n";
  69   var graph = document.getElementById("graph");
  70   var g = new Dygraph(graph, data, opts);
  71 });
  72
  73 // Regression test for http://code.google.com/p/dygraphs/issues/detail?id=201
  74 it('testCustomBarsZero', function() {
  75   var opts = {
  76     customBars: true
  77   };
  78   var data = "X,Y1,Y2\n" +
  79 "1,1;2;3,0;0;0\n" +
  80 "2,2;3;4,0;0;0\n" +
  81 "3,1;3;5,0;0;0\n";
  82
  83   var graph = document.getElementById("graph");
  84   var g = new Dygraph(graph, data, opts);
  85
  86   var range = g.yAxisRange();
  87   assert.isTrue(range[0] <= 0, 'y-axis must include 0');
  88   assert.isTrue(range[1] >= 5, 'y-axis must include 5');
  89 });
  90
  91 // Regression test for http://code.google.com/p/dygraphs/issues/detail?id=229
  92 it('testCustomBarsAtTop', function() {
  93   var g = new Dygraph(document.getElementById("graph"),
  94       [
  95         [1, [10, 10, 100]],
  96         [1, [10, 10, 100]],
  97         [2, [15, 20, 110]],
  98         [3, [10, 30, 100]],
  99         [4, [15, 40, 110]],
 100         [5, [10,120, 100]],
 101         [6, [15, 50, 110]],
 102         [7, [10, 70, 100]],
 103         [8, [15, 90, 110]],
 104         [9, [10, 50, 100]]
 105       ], {
 106         width: 500, height: 350,
 107         customBars: true,
 108         errorBars: true,
 109         axes: {
 110           x: {
 111             drawGrid: false,
 112             drawAxis: false,
 113           },
 114           y: {
 115             drawGrid: false,
 116             drawAxis: false,
 117           }
 118         },
 119         valueRange: [0, 120],
 120         fillAlpha: 0.15,
 121         colors: ['#00FF00'],
 122         labels: ['X', 'Y']
 123       });
 124
 125   var sampler = new PixelSampler(g);
 126   assert.deepEqual([0, 255, 0, 38], sampler.colorAtCoordinate(5, 60));
 127 });
 128
 129 // Tests that custom bars work with log scale.
 130 it('testCustomBarsLogScale', function() {
 131   var g = new Dygraph(document.getElementById("graph"),
 132       [
 133         [1, [10, 10, 100]],
 134         [5, [15,120, 80]],
 135         [9, [10, 50, 100]]
 136       ], {
 137         width: 500, height: 350,
 138         customBars: true,
 139         errorBars: true,
 140         valueRange: [1, 120],
 141         axes : {
 142           x : {
 143             drawGrid: false,
 144             drawAxis: false,
 145           },
 146           y : {
 147             drawGrid: false,
 148             drawAxis: false,
 149           }
 150         },
 151         fillAlpha: 1.0,
 152         logscale: true,
 153         colors: ['#00FF00'],
 154         labels: ['X', 'Y']
 155       });
 156
 157   // The following assertions describe the sides of the custom bars, which are
 158   // drawn in two halves.
 159   CanvasAssertions.assertConsecutiveLinesDrawn(
 160       g.hidden_ctx_,
 161       [[0, 13.329014086362069],
 162        [247.5, 29.64240889852502],
 163        [247.5, 152.02209814465604],
 164        [0, 181.66450704318103]],
 165       { fillStyle: "#00ff00" });
 166
 167   CanvasAssertions.assertConsecutiveLinesDrawn(
 168       g.hidden_ctx_,
 169       [[247.5, 29.64240889852502],
 170        [495, 13.329014086362069],
 171        [495, 181.66450704318103],
 172        [247.5, 152.02209814465604]],
 173       { fillStyle: "#00ff00" });
 174 });
 175
 176 it('testCustomBarsWithNegativeValuesInLogScale', function() {
 177   var graph = document.getElementById("graph");
 178
 179   var count = 0;
 180   var drawPointCallback = function() {
 181     count++;
 182   };
 183
 184   var g = new Dygraph(graph,
 185       [
 186         [1, [10, 20,30]],
 187         [2, [5, 10, 15]],
 188         [3, [-1, 5, 10]]
 189       ],
 190       {
 191         drawPoints: true,
 192         drawPointCallback: drawPointCallback,
 193         customBars: true,
 194         labels: ['X', 'Y']
 195       });
 196
 197   // Normally all three points would be drawn.
 198   assert.equal(3, count);
 199   count = 0;
 200
 201   // In log scale, the third point shouldn't be shown.
 202   g.updateOptions({ logscale : true });
 203   assert.equal(2, count);
 204 });
 205
 206 });