// y pixel 100 = y1 line (green)
// y pixels 0-99 = nothing (white)
- var canvas = g.hidden_ctx_;
- var imageData = canvas.getImageData(0, 0, 400, 300);
+ // TODO(danvk): factor this and getPixel() into a utility usable by all tests.
+ var ctx = g.hidden_ctx_;
+ var imageData = ctx.getImageData(0, 0, 400, 300);
assertEquals(400, imageData.width);
assertEquals(300, imageData.height);
// 38 = round(0.15 * 255)
assertEquals([0, 0, 255, 38], getPixel(imageData, 200, 250));
assertEquals([0, 255, 0, 38], getPixel(imageData, 200, 150));
- assertEquals([255, 255, 255, 255], getPixel(imageData, 200, 50));
+};
+
+// Regression test for http://code.google.com/p/dygraphs/issues/detail?id=358
+stackedTestCase.prototype.testSelectionValues = function() {
+ var opts = {
+ stackedGraph: true
+ };
+ var data = "X,Y1,Y2\n" +
+ "0,1,1\n" +
+ "1,1,1\n" +
+ "2,1,1\n" +
+ "3,1,1\n"
+ ;
+
+ var graph = document.getElementById("graph");
+ g = new Dygraph(graph, data, opts);
+
+ g.setSelection(0);
+
+ assertEquals("0: Y1: 1 Y2: 1", Util.getLegend());
+
+ // Verify that the behavior is correct with highlightSeriesOpts as well.
+ g.updateOptions({
+ highlightSeriesOpts: {
+ strokeWidth: 10
+ }
+ });
+ g.setSelection(0);
+ assertEquals("0: Y1: 1 Y2: 1", Util.getLegend());
+
+ g.setSelection(1);
+ assertEquals("1: Y1: 1 Y2: 1", Util.getLegend());
+
+ g.setSelection(0, 'Y2');
+ assertEquals("0: Y1: 1 Y2: 1", Util.getLegend());
+};
+
+// Regression test for http://code.google.com/p/dygraphs/issues/detail?id=176
+stackedTestCase.prototype.testDuplicatedXValue = function() {
+ var opts = {
+ stackedGraph: true,
+ fillAlpha: 0.15,
+ colors: ['#00ff00'],
+ width: 400,
+ height: 300
+ };
+ var data = "X,Y1\n" +
+ "0,1\n" +
+ "1,1\n" +
+ "2,1\n" +
+ "2,1\n" + // duplicate x-value!
+ "3,1\n"
+ ;
+
+ var graph = document.getElementById("graph");
+ g = new Dygraph(graph, data, opts);
+
+ assert(g.yAxisRange()[1] < 2);
+
+ assertEquals([0, 255, 0, 38], Util.samplePixel(g.hidden_, 200, 250));
+ assertEquals([0, 255, 0, 38], Util.samplePixel(g.hidden_, 317, 250));
+}
+
+// Validates regression when null values in stacked graphs show up
+// incorrectly in the legend.
+stackedTestCase.prototype.testNullValues = function() {
+ var opts = {
+ stackedGraph: true,
+ stepPlot:true
+ };
+ var data = "X,Y1,Y2,Y3\n" +
+ "0,-5,-1,1\n" +
+ "1,1,,1\n" +
+ "2,1,2,3\n" +
+ "3,3,,4\n" +
+ "4,3,2,3\n"
+ ;
+
+ var graph = document.getElementById("graph");
+ g = new Dygraph(graph, data, opts);
+
+ g.setSelection(0);
+ assertEquals("0: Y1: -5 Y2: -1 Y3: 1", Util.getLegend());
+
+ g.setSelection(1);
+ assertEquals("1: Y1: 1 Y3: 1", Util.getLegend());
+
+ g.setSelection(2);
+ assertEquals("2: Y1: 1 Y2: 2 Y3: 3", Util.getLegend());
+
+ g.setSelection(3);
+ assertEquals("3: Y1: 3 Y3: 4", Util.getLegend());
+
+ g.setSelection(4);
+ assertEquals("4: Y1: 3 Y2: 2 Y3: 3", Util.getLegend());
+};
+
+// Regression test for http://code.google.com/p/dygraphs/issues/detail?id=438
+stackedTestCase.prototype.testMissingValueAtZero = function() {
+ var opts = {
+ stackedGraph: true
+ };
+ var data = "X,Y1,Y2\n" +
+ "0,,1\n" +
+ "1,1,2\n" +
+ "2,,3\n"
+ ;
+
+ var graph = document.getElementById("graph");
+ g = new Dygraph(graph, data, opts);
+
+ g.setSelection(0);
+ assertEquals("0: Y2: 1", Util.getLegend());
+
+ g.setSelection(1);
+ assertEquals("1: Y1: 1 Y2: 2", Util.getLegend());
+
+ g.setSelection(2);
+ assertEquals("2: Y2: 3", Util.getLegend());
};