auto_tests/tests/data_api.js

   1 /**
   2  * @fileoverview Tests for data access methods.
   3  *
   4  * @author danvdk@gmail.com (Dan Vanderkam)
   5  */
   6 var dataApiTestCase = TestCase("data-api");
   7
   8 dataApiTestCase.prototype.setUp = function() {
   9   document.body.innerHTML = "<div id='graph'></div>";
  10   this.opts = {
  11     width: 480,
  12     height: 320
  13   };
  14
  15   this.graphDiv = document.getElementById("graph");
  16 };
  17
  18 dataApiTestCase.prototype.tearDown = function() {
  19 };
  20
  21 dataApiTestCase.prototype.testBasicAccessors = function() {
  22   var g = new Dygraph(this.graphDiv, temperature_data, this.opts);
  23
  24   assertEquals(365, g.numRows());
  25   assertEquals(3, g.numColumns());
  26
  27   // 2007-01-01,62,39
  28   assertEquals(62, g.getValue(0, 1));
  29   assertEquals(39, g.getValue(0, 2));
  30
  31   // 2007-12-31,57,42
  32   assertEquals(57, g.getValue(364, 1));
  33   assertEquals(42, g.getValue(364, 2));
  34 };
  35
  36
  37 dataApiTestCase.prototype.testAccessorsCustomBars = function() {
  38   var g = new Dygraph(this.graphDiv, data_temp_high_low, {
  39     customBars: true
  40   });
  41
  42   assertEquals(1070, g.numRows());
  43   assertEquals(3, g.numColumns());
  44
  45   // 2007-01-01,46;51;56,43;45;48
  46   assertEquals([46, 51, 56], g.getValue(0, 1));
  47   assertEquals([43, 45, 48], g.getValue(0, 2));
  48
  49   // 2009-12-05,37;42;47  (i.e. missing second column)
  50   assertEquals([37, 42, 47], g.getValue(1069, 1));
  51   assertEquals([null, null, null], g.getValue(1069, 2));
  52 };
  53
  54
  55 // Regression test for #554.
  56 dataApiTestCase.prototype.testGetRowForX = function() {
  57   var g = new Dygraph(this.graphDiv, [
  58     "x,y",
  59     "1,2",
  60     "3,4",
  61     "5,6",
  62     "7,8",
  63     "9,10"
  64   ].join('\n'), this.opts);
  65
  66   assertEquals(null, g.getRowForX(0));
  67   assertEquals(0, g.getRowForX(1));
  68   assertEquals(null, g.getRowForX(2));
  69   assertEquals(1, g.getRowForX(3));
  70   assertEquals(null, g.getRowForX(4));
  71   assertEquals(2, g.getRowForX(5));
  72   assertEquals(null, g.getRowForX(6));
  73   assertEquals(3, g.getRowForX(7));
  74   assertEquals(null, g.getRowForX(8));
  75   assertEquals(4, g.getRowForX(9));
  76   assertEquals(null, g.getRowForX(10));
  77 };
  78
  79 // If there are rows with identical x-values, getRowForX promises that it will
  80 // return the first one.
  81 dataApiTestCase.prototype.testGetRowForXDuplicates = function() {
  82   var g = new Dygraph(this.graphDiv, [
  83     "x,y",
  84     "1,2",  // 0
  85     "1,4",  // 1
  86     "1,6",  // 2
  87     "1,8",  // 3
  88     "1,6",  // 4
  89     "9,2",  // 5
  90     "9,4",
  91     "9,6",
  92     "9,8",
  93     "9,10"
  94   ].join('\n'), this.opts);
  95
  96   assertEquals(0, g.getRowForX(1));
  97   assertEquals(null, g.getRowForX(2));
  98   assertEquals(5, g.getRowForX(9));
  99 };