From 6833c463ec383edd9dd4051b7a4cb8de834e27d0 Mon Sep 17 00:00:00 2001
From: Dan Vanderkam <danvdk@gmail.com>
Date: Tue, 27 Oct 2015 09:37:45 -0400
Subject: [PATCH] Update to ES6 modules

---
 auto_tests/tests/highlight_series_background.js | 28 ++++++++++++-------------
 src/dygraph.js                                  |  2 +-
 2 files changed, 15 insertions(+), 15 deletions(-)

diff --git a/auto_tests/tests/highlight_series_background.js b/auto_tests/tests/highlight_series_background.js
index aedc8ed..60f4f8d 100644
--- a/auto_tests/tests/highlight_series_background.js
+++ b/auto_tests/tests/highlight_series_background.js
@@ -1,18 +1,19 @@
 /**
- * @fileoverview Tests for the highlightSeriesBackgroundAlpha and highlightSeriesBackgroundColor options.
+ * @fileoverview Tests for the highlightSeriesBackgroundAlpha and
+ * highlightSeriesBackgroundColor options.
  * @author sergeyslepian@gmail.com
  */
 
-describe("highlight-series-background", function() {
+import Dygraph from '../../src/dygraph';
+import * as utils from '../../src/dygraph-utils';
+import Util from './Util';
 
-  beforeEach(function () {
-    document.body.innerHTML = "<div id='graph'></div>";
-  });
+describe("highlight-series-background", function() {
 
-  afterEach(function () {
-  });
+  cleanupAfterEach();
 
-  function setupGraph(highlightSeriesBackgroundAlpha, highlightSeriesBackgroundColor) {
+  function setupGraph(highlightSeriesBackgroundAlpha,
+                      highlightSeriesBackgroundColor) {
     var opts = {
       width: 480,
       height: 320,
@@ -25,16 +26,15 @@ describe("highlight-series-background", function() {
       }
     };
 
-    if(highlightSeriesBackgroundAlpha !== undefined) opts.highlightSeriesBackgroundAlpha = highlightSeriesBackgroundAlpha;
-    if(highlightSeriesBackgroundColor !== undefined) opts.highlightSeriesBackgroundColor = highlightSeriesBackgroundColor;
+    if (highlightSeriesBackgroundAlpha) utils.update(opts, {highlightSeriesBackgroundAlpha});
+    if (highlightSeriesBackgroundColor) utils.update(opts, {highlightSeriesBackgroundColor});
 
     var data = [];
     for (var j = 0; j < 10; j++) {
       data.push([j, 0]);
     }
 
-    var graph = document.getElementById("graph");
-    return new Dygraph(graph, data, opts);
+    return new Dygraph('graph', data, opts);
   }
 
   it('testDefaultHighlight', function(done) {
@@ -66,7 +66,7 @@ describe("highlight-series-background", function() {
   });
 
   it('testCustomHighlightColor', function(done) {
-    var graph = setupGraph(undefined, 'rgb(0,255,255)');
+    var graph = setupGraph(null, 'rgb(0,255,255)');
 
     assert.deepEqual(Util.samplePixel(graph.canvas_, 100, 100), [0,0,0,0]);
 
@@ -106,4 +106,4 @@ describe("highlight-series-background", function() {
       done();
     }, 1000);
   });
-});
\ No newline at end of file
+});
diff --git a/src/dygraph.js b/src/dygraph.js
index 62c482d..bc75fef 100644
--- a/src/dygraph.js
+++ b/src/dygraph.js
@@ -1774,7 +1774,7 @@ Dygraph.prototype.updateSelection_ = function(opt_animFraction) {
   if (this.getOption('highlightSeriesOpts')) {
     ctx.clearRect(0, 0, this.width_, this.height_);
     var alpha = 1.0 - this.getNumericOption('highlightSeriesBackgroundAlpha');
-    var backgroundColor = Dygraph.toRGB_(this.getOption('highlightSeriesBackgroundColor'));
+    var backgroundColor = utils.toRGB_(this.getOption('highlightSeriesBackgroundColor'));
 
     if (alpha) {
       // Activating background fade includes an animation effect for a gradual
-- 
2.7.4