Now considering the issue as a bug, adding an auto_test (might be wrong)

[dygraphs.git] / auto_tests / tests / fill_step_plot.js

diff --git a/auto_tests/tests/fill_step_plot.js b/auto_tests/tests/fill_step_plot.js
new file mode 100644 (file)
index 0000000..fb66ad0
--- /dev/null
+++ b/auto_tests/tests/fill_step_plot.js
@@ -0,0 +1,59 @@
+/**
+ * @fileoverview Test if you put give null values to dygraph with stepPlot
+ * and fillGraph options enabled
+ *
+ * @author benoitboivin.pro@gmail.com (Benoit Boivin)
+ */
+var fillStepPlotTestCase = TestCase("fill-step-plot");
+
+fillStepPlotTestCase.prototype.setUp = function() {
+  document.body.innerHTML = "<div id='graph'></div>";
+};
+
+fillStepPlotTestCase.origFunc = Dygraph.getContext;
+
+fillStepPlotTestCase.prototype.setUp = function() {
+  document.body.innerHTML = "<div id='graph'></div>";
+  Dygraph.getContext = function(canvas) {
+    return new Proxy(fillStepPlotTestCase.origFunc(canvas));
+  };
+};
+
+fillStepPlotTestCase.prototype.tearDown = function() {
+  Dygraph.getContext = fillStepPlotTestCase.origFunc;
+};
+
+
+fillStepPlotTestCase.prototype.testFillStepPlotNullValues = function() {
+  var attrs = {};
+  var opts = {
+    labels: ["x","y"],
+    width: 480,
+    height: 320,
+    fillGraph: true,
+    stepPlot: true
+  };
+  var data = [
+    [1,3],
+    [2,0],
+    [3,8],
+    [4,null],
+    [5,9],
+    [6,8],
+    [7,6],
+    [8,3]
+  ];
+  var graph = document.getElementById("graph");
+  var g = new Dygraph(graph, data, opts);
+
+  htx = g.hidden_ctx_;
+  var x1 = data[3][0];
+  var y1 = data[2][1];
+  var x2 = data[3][0];
+  var y2 = 0;
+  var xy1 = g.toDomCoords(x1, y1);
+  var xy2 = g.toDomCoords(x2, y2);
+  
+  // Check if a line is drawn between the previous y and the bottom of the chart
+  CanvasAssertions.assertLineDrawn(htx, xy1, xy2, attrs);
+};
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