auto_tests/tests/rolling_average.js

   1 /**
   2  * @fileoverview Tests for rolling averages.
   3  *
   4  * @author danvk@google.com (Dan Vanderkam)
   5  */
   6 var rollingAverageTestCase = TestCase("rolling-average");
   7
   8 rollingAverageTestCase.prototype.setUp = function() {
   9   document.body.innerHTML = "<div id='graph'></div>";
  10 };
  11
  12 rollingAverageTestCase.prototype.tearDown = function() {
  13 };
  14
  15 rollingAverageTestCase.prototype.getLegend = function() {
  16   return document.getElementsByClassName("dygraph-legend")[0].textContent;
  17 };
  18
  19 rollingAverageTestCase.prototype.testRollingAverage = function() {
  20   var opts = {
  21     width: 480,
  22     height: 320,
  23     rollPeriod: 1,
  24     showRoller: true
  25   };
  26   var data = "X,Y\n" +
  27       "0,0\n" +
  28       "1,1\n" +
  29       "2,2\n" +
  30       "3,3\n"
  31   ;
  32
  33   var graph = document.getElementById("graph");
  34   var g = new Dygraph(graph, data, opts);
  35
  36   g.setSelection(0); assertEquals("0: Y:0", this.getLegend());
  37   g.setSelection(1); assertEquals("1: Y:1", this.getLegend());
  38   g.setSelection(2); assertEquals("2: Y:2", this.getLegend());
  39   g.setSelection(3); assertEquals("3: Y:3", this.getLegend());
  40   assertEquals(1, g.rollPeriod());
  41
  42   g.updateOptions({rollPeriod: 2});
  43   g.setSelection(0); assertEquals("0: Y:0", this.getLegend());
  44   g.setSelection(1); assertEquals("1: Y:0.5", this.getLegend());
  45   g.setSelection(2); assertEquals("2: Y:1.5", this.getLegend());
  46   g.setSelection(3); assertEquals("3: Y:2.5", this.getLegend());
  47   assertEquals(2, g.rollPeriod());
  48
  49   g.updateOptions({rollPeriod: 3});
  50   g.setSelection(0); assertEquals("0: Y:0", this.getLegend());
  51   g.setSelection(1); assertEquals("1: Y:0.5", this.getLegend());
  52   g.setSelection(2); assertEquals("2: Y:1", this.getLegend());
  53   g.setSelection(3); assertEquals("3: Y:2", this.getLegend());
  54   assertEquals(3, g.rollPeriod());
  55
  56   g.updateOptions({rollPeriod: 4});
  57   g.setSelection(0); assertEquals("0: Y:0", this.getLegend());
  58   g.setSelection(1); assertEquals("1: Y:0.5", this.getLegend());
  59   g.setSelection(2); assertEquals("2: Y:1", this.getLegend());
  60   g.setSelection(3); assertEquals("3: Y:1.5", this.getLegend());
  61   assertEquals(4, g.rollPeriod());
  62 };
  63
  64 rollingAverageTestCase.prototype.testRollBoxDoesntDisapper = function() {
  65   var opts = {
  66     showRoller: true
  67   };
  68   var data = "X,Y\n" +
  69       "0,0\n" +
  70       "1,1\n" +
  71       "2,2\n" +
  72       "3,3\n"
  73   ;
  74
  75   var graph = document.getElementById("graph");
  76   var g = new Dygraph(graph, data, opts);
  77
  78   var roll_box = graph.getElementsByTagName("input");
  79   assertEquals(1, roll_box.length);
  80   assertEquals("1", roll_box[0].value);
  81
  82   graph.style.width = "500px";
  83   g.resize();
  84   assertEquals(1, roll_box.length);
  85   assertEquals("1", roll_box[0].value);
  86 };
  87