data_api.js

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