X-Git-Url: https://adrianiainlam.tk/git/?a=blobdiff_plain;f=auto_tests%2Ftests%2Ferror_bars.js;h=e57898be27a01190d50de893059bfe256c6c49f8;hb=0b4cf8f0eefb5c3c8592843474843d57cc0494f2;hp=c9e3a387baf2e2d2c7adbde18781fd39cf0cf966;hpb=6278f6fe69767cf21c1d3361bc141321a282d9ef;p=dygraphs.git

diff --git a/auto_tests/tests/error_bars.js b/auto_tests/tests/error_bars.js
index c9e3a38..e57898b 100644
--- a/auto_tests/tests/error_bars.js
+++ b/auto_tests/tests/error_bars.js
@@ -9,16 +9,16 @@ errorBarsTestCase.prototype.setUp = function() {
   document.body.innerHTML = "<div id='graph'></div>";
 };
 
-var _origFunc = Dygraph.getContext;
+errorBarsTestCase._origFunc = Dygraph.getContext;
 errorBarsTestCase.prototype.setUp = function() {
   document.body.innerHTML = "<div id='graph'></div>";
   Dygraph.getContext = function(canvas) {
-    return new Proxy(_origFunc(canvas));
+    return new Proxy(errorBarsTestCase._origFunc(canvas));
   }
 };
 
 errorBarsTestCase.prototype.tearDown = function() {
-  Dygraph.getContext = _origFunc;
+  Dygraph.getContext = errorBarsTestCase._origFunc;
 };
 
 errorBarsTestCase.prototype.testErrorBarsDrawn = function() {
@@ -89,3 +89,43 @@ errorBarsTestCase.prototype.testErrorBarsDrawn = function() {
   CanvasAssertions.assertBalancedSaveRestore(htx);
 };
 
+errorBarsTestCase.prototype.testErrorBarsCorrectColors = function() {
+  // Two constant series with constant error.
+  var data = [
+    [0, [100, 50], [200, 50]],
+    [1, [100, 50], [200, 50]]
+  ];
+
+  var opts = {
+    errorBars: true,
+    sigma: 1.0,
+    fillAlpha: 0.15,
+    colors: ['#00ff00', '#0000ff'],
+    drawXGrid: false,
+    drawYGrid: false,
+    drawXAxis: false,
+    drawYAxis: false,
+    width: 400,
+    height: 300,
+    valueRange: [0, 300],
+    labels: ['X', 'Y1', 'Y2']
+  };
+  var graph = document.getElementById("graph");
+  var g = new Dygraph(graph, data, opts);
+
+  // y-pixels (0=top, 299=bottom)
+  //   0- 48: empty (white)
+  //  49- 98: Y2 error bar
+  //  99:     Y2 center line
+  // 100-148: Y2 error bar
+  // 149-198: Y1 error bar
+  // 199:     Y1 center line
+  // 200-248: Y1 error bar
+  // 249-299: empty (white)
+  // TODO(danvk): test the edges of these regions.
+
+  assertEquals([0, 0, 255, 38], Util.samplePixel(g.hidden_, 200, 75));
+  assertEquals([0, 0, 255, 38], Util.samplePixel(g.hidden_, 200, 125));
+  assertEquals([0, 255, 0, 38], Util.samplePixel(g.hidden_, 200, 175));
+  assertEquals([0, 255, 0, 38], Util.samplePixel(g.hidden_, 200, 225));
+}