| 1 | /** |
| 2 | * @fileoverview Tests using the "stackedGraph" option. |
| 3 | * |
| 4 | * @author dan@dygraphs.com (Dan Vanderkam) |
| 5 | */ |
| 6 | var stackedTestCase = TestCase("stacked"); |
| 7 | |
| 8 | stackedTestCase.prototype.setUp = function() { |
| 9 | document.body.innerHTML = "<div id='graph'></div>"; |
| 10 | }; |
| 11 | |
| 12 | stackedTestCase.prototype.tearDown = function() { |
| 13 | }; |
| 14 | |
| 15 | stackedTestCase.prototype.testCorrectColors = function() { |
| 16 | var opts = { |
| 17 | width: 400, |
| 18 | height: 300, |
| 19 | stackedGraph: true, |
| 20 | drawXGrid: false, |
| 21 | drawYGrid: false, |
| 22 | drawXAxis: false, |
| 23 | drawYAxis: false, |
| 24 | valueRange: [0, 3], |
| 25 | colors: ['#00ff00', '#0000ff'], |
| 26 | fillAlpha: 0.15 |
| 27 | }; |
| 28 | var data = "X,Y1,Y2\n" + |
| 29 | "0,1,1\n" + |
| 30 | "1,1,1\n" + |
| 31 | "2,1,1\n" + |
| 32 | "3,1,1\n" |
| 33 | ; |
| 34 | |
| 35 | var graph = document.getElementById("graph"); |
| 36 | var g = new Dygraph(graph, data, opts); |
| 37 | |
| 38 | // y pixels 299-201 = y2 = transparent blue |
| 39 | // y pixel 200 = y2 line (blue) |
| 40 | // y pixels 199-101 = y1 = transparent green |
| 41 | // y pixel 100 = y1 line (green) |
| 42 | // y pixels 0-99 = nothing (white) |
| 43 | |
| 44 | // TODO(danvk): factor this and getPixel() into a utility usable by all tests. |
| 45 | var ctx = g.hidden_ctx_; |
| 46 | var imageData = ctx.getImageData(0, 0, 400, 300); |
| 47 | |
| 48 | assertEquals(400, imageData.width); |
| 49 | assertEquals(300, imageData.height); |
| 50 | |
| 51 | // returns an (r, g, b, alpha) tuple for the pixel. |
| 52 | // values are in [0, 255]. |
| 53 | var getPixel = function(imageData, x, y) { |
| 54 | var i = 4 * (x + imageData.width * y); |
| 55 | var d = imageData.data; |
| 56 | return [d[i], d[i+1], d[i+2], d[i+3]]; |
| 57 | }; |
| 58 | |
| 59 | // 38 = round(0.15 * 255) |
| 60 | assertEquals([0, 0, 255, 38], getPixel(imageData, 200, 250)); |
| 61 | assertEquals([0, 255, 0, 38], getPixel(imageData, 200, 150)); |
| 62 | }; |
| 63 | |
| 64 | // Regression test for http://code.google.com/p/dygraphs/issues/detail?id=358 |
| 65 | stackedTestCase.prototype.testSelectionValues = function() { |
| 66 | var opts = { |
| 67 | stackedGraph: true |
| 68 | }; |
| 69 | var data = "X,Y1,Y2\n" + |
| 70 | "0,1,1\n" + |
| 71 | "1,1,1\n" + |
| 72 | "2,1,1\n" + |
| 73 | "3,1,1\n" |
| 74 | ; |
| 75 | |
| 76 | var graph = document.getElementById("graph"); |
| 77 | g = new Dygraph(graph, data, opts); |
| 78 | |
| 79 | g.setSelection(0); |
| 80 | |
| 81 | assertEquals("0: Y1: 1 Y2: 1", Util.getLegend()); |
| 82 | |
| 83 | // Verify that the behavior is correct with highlightSeriesOpts as well. |
| 84 | g.updateOptions({ |
| 85 | highlightSeriesOpts: { |
| 86 | strokeWidth: 10 |
| 87 | } |
| 88 | }); |
| 89 | g.setSelection(0); |
| 90 | assertEquals("0: Y1: 1 Y2: 1", Util.getLegend()); |
| 91 | |
| 92 | g.setSelection(1); |
| 93 | assertEquals("1: Y1: 1 Y2: 1", Util.getLegend()); |
| 94 | |
| 95 | g.setSelection(0, 'Y2'); |
| 96 | assertEquals("0: Y1: 1 Y2: 1", Util.getLegend()); |
| 97 | }; |
| 98 | |
| 99 | // Regression test for http://code.google.com/p/dygraphs/issues/detail?id=176 |
| 100 | stackedTestCase.prototype.testDuplicatedXValue = function() { |
| 101 | var opts = { |
| 102 | stackedGraph: true, |
| 103 | fillAlpha: 0.15, |
| 104 | colors: ['#00ff00'], |
| 105 | width: 400, |
| 106 | height: 300 |
| 107 | }; |
| 108 | var data = "X,Y1\n" + |
| 109 | "0,1\n" + |
| 110 | "1,1\n" + |
| 111 | "2,1\n" + |
| 112 | "2,1\n" + // duplicate x-value! |
| 113 | "3,1\n" |
| 114 | ; |
| 115 | |
| 116 | var graph = document.getElementById("graph"); |
| 117 | g = new Dygraph(graph, data, opts); |
| 118 | |
| 119 | assert(g.yAxisRange()[1] < 2); |
| 120 | |
| 121 | assertEquals([0, 255, 0, 38], Util.samplePixel(g.hidden_, 200, 250)); |
| 122 | assertEquals([0, 255, 0, 38], Util.samplePixel(g.hidden_, 317, 250)); |
| 123 | } |
| 124 | |
| 125 | // Validates regression when null values in stacked graphs show up |
| 126 | // incorrectly in the legend. |
| 127 | stackedTestCase.prototype.testNullValues = function() { |
| 128 | var opts = { |
| 129 | stackedGraph: true, |
| 130 | stepPlot:true |
| 131 | }; |
| 132 | var data = "X,Y1,Y2,Y3\n" + |
| 133 | "0,-5,-1,1\n" + |
| 134 | "1,1,,1\n" + |
| 135 | "2,1,2,3\n" + |
| 136 | "3,3,,4\n" + |
| 137 | "4,3,2,3\n" |
| 138 | ; |
| 139 | |
| 140 | var graph = document.getElementById("graph"); |
| 141 | g = new Dygraph(graph, data, opts); |
| 142 | |
| 143 | g.setSelection(0); |
| 144 | assertEquals("0: Y1: -5 Y2: -1 Y3: 1", Util.getLegend()); |
| 145 | |
| 146 | g.setSelection(1); |
| 147 | assertEquals("1: Y1: 1 Y3: 1", Util.getLegend()); |
| 148 | |
| 149 | g.setSelection(2); |
| 150 | assertEquals("2: Y1: 1 Y2: 2 Y3: 3", Util.getLegend()); |
| 151 | |
| 152 | g.setSelection(3); |
| 153 | assertEquals("3: Y1: 3 Y3: 4", Util.getLegend()); |
| 154 | |
| 155 | g.setSelection(4); |
| 156 | assertEquals("4: Y1: 3 Y2: 2 Y3: 3", Util.getLegend()); |
| 157 | }; |
| 158 | |
| 159 | // Regression test for http://code.google.com/p/dygraphs/issues/detail?id=438 |
| 160 | stackedTestCase.prototype.testMissingValueAtZero = function() { |
| 161 | var opts = { |
| 162 | stackedGraph: true |
| 163 | }; |
| 164 | var data = "X,Y1,Y2\n" + |
| 165 | "0,,1\n" + |
| 166 | "1,1,2\n" + |
| 167 | "2,,3\n" |
| 168 | ; |
| 169 | |
| 170 | var graph = document.getElementById("graph"); |
| 171 | g = new Dygraph(graph, data, opts); |
| 172 | |
| 173 | g.setSelection(0); |
| 174 | assertEquals("0: Y2: 1", Util.getLegend()); |
| 175 | |
| 176 | g.setSelection(1); |
| 177 | assertEquals("1: Y1: 1 Y2: 2", Util.getLegend()); |
| 178 | |
| 179 | g.setSelection(2); |
| 180 | assertEquals("2: Y2: 3", Util.getLegend()); |
| 181 | }; |