auto_tests/tests/data_api.js

   1 /**
   2  * @fileoverview Tests for data access methods.
   3  *
   4  * @author danvdk@gmail.com (Dan Vanderkam)
   5  */
   6 describe("data-api", function() {
   7
   8 var opts, graphDiv;
   9
  10 beforeEach(function() {
  11   document.body.innerHTML = "<div id='graph'></div>";
  12   opts = {
  13     width: 480,
  14     height: 320
  15   };
  16
  17   graphDiv = document.getElementById("graph");
  18 });
  19
  20 afterEach(function() {
  21 });
  22
  23 it('testBasicAccessors', function() {
  24   var g = new Dygraph(graphDiv, temperature_data, opts);
  25
  26   assert.equal(365, g.numRows());
  27   assert.equal(3, g.numColumns());
  28
  29   // 2007-01-01,62,39
  30   assert.equal(62, g.getValue(0, 1));
  31   assert.equal(39, g.getValue(0, 2));
  32
  33   // 2007-12-31,57,42
  34   assert.equal(57, g.getValue(364, 1));
  35   assert.equal(42, g.getValue(364, 2));
  36 });
  37
  38
  39 it('testAccessorsCustomBars', function() {
  40   var g = new Dygraph(graphDiv, data_temp_high_low, {
  41     customBars: true
  42   });
  43
  44   assert.equal(1070, g.numRows());
  45   assert.equal(3, g.numColumns());
  46
  47   // 2007-01-01,46;51;56,43;45;48
  48   assert.deepEqual([46, 51, 56], g.getValue(0, 1));
  49   assert.deepEqual([43, 45, 48], g.getValue(0, 2));
  50
  51   // 2009-12-05,37;42;47  (i.e. missing second column)
  52   assert.deepEqual([37, 42, 47], g.getValue(1069, 1));
  53   assert.deepEqual([null, null, null], g.getValue(1069, 2));
  54 });
  55
  56
  57 // Regression test for #554.
  58 it('testGetRowForX', function() {
  59   var g = new Dygraph(graphDiv, [
  60     "x,y",
  61     "1,2",
  62     "3,4",
  63     "5,6",
  64     "7,8",
  65     "9,10"
  66   ].join('\n'), opts);
  67
  68   assert.equal(null, g.getRowForX(0));
  69   assert.equal(0, g.getRowForX(1));
  70   assert.equal(null, g.getRowForX(2));
  71   assert.equal(1, g.getRowForX(3));
  72   assert.equal(null, g.getRowForX(4));
  73   assert.equal(2, g.getRowForX(5));
  74   assert.equal(null, g.getRowForX(6));
  75   assert.equal(3, g.getRowForX(7));
  76   assert.equal(null, g.getRowForX(8));
  77   assert.equal(4, g.getRowForX(9));
  78   assert.equal(null, g.getRowForX(10));
  79 });
  80
  81 // If there are rows with identical x-values, getRowForX promises that it will
  82 // return the first one.
  83 it('testGetRowForXDuplicates', function() {
  84   var g = new Dygraph(graphDiv, [
  85     "x,y",
  86     "1,2",  // 0
  87     "1,4",  // 1
  88     "1,6",  // 2
  89     "1,8",  // 3
  90     "1,6",  // 4
  91     "9,2",  // 5
  92     "9,4",
  93     "9,6",
  94     "9,8",
  95     "9,10"
  96   ].join('\n'), opts);
  97
  98   assert.equal(0, g.getRowForX(1));
  99   assert.equal(null, g.getRowForX(2));
 100   assert.equal(5, g.getRowForX(9));
 101 });
 102
 103 });