Convert tests from jstd to Mocha.

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

diff --git a/auto_tests/tests/scrolling_div.js b/auto_tests/tests/scrolling_div.js
index a97874b..0a55c24 100644 (file)
--- a/auto_tests/tests/scrolling_div.js
+++ b/auto_tests/tests/scrolling_div.js
@@ -3,9 +3,11 @@
  *
  * @author konigsberg@google.com (Robert Konigsbrg)
  */
-var ScrollingDivTestCase = TestCase("scrolling-div");
+describe("scrolling-div", function() {
 
-ScrollingDivTestCase.prototype.setUp = function() {
+var point, g; 
+
+beforeEach(function() {
 
 var LOREM_IPSUM =
     "<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod\n" +
@@ -17,11 +19,10 @@ var LOREM_IPSUM =
     "laborum.</p>";
 
   document.body.innerHTML = 
-      "<div style='overflow: scroll; height: 450px; width: 800px;'>" +
-      "<a name='TOP'></a><div id='graph'></div>" +
+      "<div id='scroller' style='overflow: scroll; height: 450px; width: 800px;'>" +
+      "<div id='graph'></div>" +
       "<div style='height:100px; background-color:green;'>" + LOREM_IPSUM + " </div>" +
       "<div style='height:100px; background-color:red;'>" + LOREM_IPSUM + "</div>" +
-      "<a name='BOTTOM'></a>" +
       "</div>";
 
   var data = [
@@ -36,30 +37,52 @@ var LOREM_IPSUM =
 
   var graph = document.getElementById("graph");
 
-  this.point = null;
-  var self = this;
-  this.g = new Dygraph(graph, data,
+  point = null;
+  g = new Dygraph(graph, data,
           {
             labels : ['a', 'b'],
             drawPoints : true,
             highlightCircleSize : 6,
             pointClickCallback : function(evt, point) {
-              self.point = point;
+              point = point;
             }
           }
       );
   
+});
+
+// This is usually something like 15, but for OS X Lion and its auto-hiding
+// scrollbars, it's 0. This is a large enough difference that we need to
+// consider it when synthesizing clicks.
+// Adapted from http://davidwalsh.name/detect-scrollbar-width
+var detectScrollbarWidth = function() {
+  // Create the measurement node
+  var scrollDiv = document.createElement("div");
+  scrollDiv.style.width = "100px";
+  scrollDiv.style.height = "100px";
+  scrollDiv.style.overflow = "scroll";
+  scrollDiv.style.position = "absolute";
+  scrollDiv.style.top = "-9999px";
+  document.body.appendChild(scrollDiv);
+
+  // Get the scrollbar width
+  var scrollbarWidth = scrollDiv.offsetWidth - scrollDiv.clientWidth;
+
+  // Delete the DIV 
+  document.body.removeChild(scrollDiv);
+
+  return scrollbarWidth;
 };
 
-ScrollingDivTestCase.prototype.tearDown = function() {
-};
+afterEach(function() {
+});
 
 /**
  * This tests that when the nested div is unscrolled, things work normally.
  */
-ScrollingDivTestCase.prototype.testUnscrolledDiv = function() {
+it('testUnscrolledDiv', function() {
 
-  window.location.href="#TOP";
+  document.getElementById('scroller').scrollTop = 0;
 
   var clickOn4_40 = {
     clientX: 244,
@@ -68,31 +91,33 @@ ScrollingDivTestCase.prototype.testUnscrolledDiv = function() {
     screenY: 320
   };
 
-  DygraphOps.dispatchCanvasEvent(this.g, DygraphOps.createEvent(clickOn4_40, { type : 'mousemove' }));
-  DygraphOps.dispatchCanvasEvent(this.g, DygraphOps.createEvent(clickOn4_40, { type : 'mousedown' }));
-  DygraphOps.dispatchCanvasEvent(this.g, DygraphOps.createEvent(clickOn4_40, { type : 'mouseup' }));
+  DygraphOps.dispatchCanvasEvent(g, DygraphOps.createEvent(clickOn4_40, { type : 'mousemove' }));
+  DygraphOps.dispatchCanvasEvent(g, DygraphOps.createEvent(clickOn4_40, { type : 'mousedown' }));
+  DygraphOps.dispatchCanvasEvent(g, DygraphOps.createEvent(clickOn4_40, { type : 'mouseup' }));
 
-  assertEquals(40, this.point.xval);
-  assertEquals(4, this.point.yval);
-};
+  assert.equal(40, point.xval);
+  assert.equal(4, point.yval);
+});
 
 /**
  * This tests that when the nested div is scrolled, things work normally.
  */
-ScrollingDivTestCase.prototype.testScrolledDiv = function() {
-  window.location.href="#BOTTOM";
+it('testScrolledDiv', function() {
+  document.getElementById('scroller').scrollTop = 117;
 
   var clickOn4_40 = {
     clientX: 244,
-    clientY: 20,
+    clientY: 30 - detectScrollbarWidth(),
     screenX: 416,
     screenY: 160
   };
 
-  DygraphOps.dispatchCanvasEvent(this.g, DygraphOps.createEvent(clickOn4_40, { type : 'mousemove' }));
-  DygraphOps.dispatchCanvasEvent(this.g, DygraphOps.createEvent(clickOn4_40, { type : 'mousedown' }));
-  DygraphOps.dispatchCanvasEvent(this.g, DygraphOps.createEvent(clickOn4_40, { type : 'mouseup' }));
+  DygraphOps.dispatchCanvasEvent(g, DygraphOps.createEvent(clickOn4_40, { type : 'mousemove' }));
+  DygraphOps.dispatchCanvasEvent(g, DygraphOps.createEvent(clickOn4_40, { type : 'mousedown' }));
+  DygraphOps.dispatchCanvasEvent(g, DygraphOps.createEvent(clickOn4_40, { type : 'mouseup' }));
 
-  assertEquals(40, this.point.xval);
-  assertEquals(4, this.point.yval);
-};
+  assert.equal(40, point.xval);
+  assert.equal(4, point.yval);
+});
+
+});