auto_tests/tests/formats.js

   1 /**
   2  * @fileoverview Tests for data formats.
   3  *
   4  * @author konigsberg@google.com (Robert Konigsberg)
   5  */
   6 describe("formats", function() {
   7
   8 beforeEach(function() {
   9   document.body.innerHTML = "<div id='graph'></div>";
  10 });
  11
  12 afterEach(function() {
  13 });
  14
  15 var dataString =
  16   "X,Y\n" +
  17   "0,-1\n" +
  18   "1,0\n" +
  19   "2,1\n" +
  20   "3,0\n";
  21
  22 var dataArray =
  23   [[0,-1],
  24   [1,0],
  25   [2,1],
  26   [3,0]];
  27 var BASE_OPTS = {labels: ['X', 'Y']};
  28
  29 it('testCsv', function() {
  30   var data = dataString;
  31   var graph = document.getElementById("graph");
  32   var g = new Dygraph(graph, data, {});
  33   assertData(g);
  34 });
  35
  36 it('testArray', function() {
  37   var data = dataArray;
  38   var graph = document.getElementById("graph");
  39   var g = new Dygraph(graph, data, BASE_OPTS);
  40   assertData(g);
  41 });
  42
  43 it('testFunctionReturnsCsv', function() {
  44   var data = function() { return dataString; };
  45
  46   var graph = document.getElementById("graph");
  47   var g = new Dygraph(graph, data, {});
  48   assertData(g);
  49 });
  50
  51 it('testFunctionDefinesArray', function() {
  52   var array = dataArray;
  53   var data = function() { return array; }
  54
  55   var graph = document.getElementById("graph");
  56   var g = new Dygraph(graph, data, BASE_OPTS);
  57   assertData(g);
  58 });
  59
  60 it('testXValueParser', function() {
  61   var data =
  62     "X,Y\n" +
  63     "d,-1\n" +
  64     "e,0\n" +
  65     "f,1\n" +
  66     "g,0\n";
  67
  68   var graph = document.getElementById("graph");
  69   var g = new Dygraph(graph, data, {
  70     xValueParser : function(str) {
  71       assert.equal(1, str.length);
  72       return str.charCodeAt(0) - "a".charCodeAt(0);
  73     }
  74   });
  75
  76   assert.equal(3, g.getValue(0, 0));
  77   assert.equal(4, g.getValue(1, 0));
  78   assert.equal(5, g.getValue(2, 0));
  79   assert.equal(6, g.getValue(3, 0));
  80 });
  81
  82 var assertData = function(g) {
  83   var expected = dataArray;
  84
  85   assert.equal(4, g.numRows());
  86   assert.equal(2, g.numColumns());
  87
  88   for (var i = 0; i < 4; i++) {
  89     for (var j = 0; j < 2; j++) {
  90       assert.equal(expected[i][j], g.getValue(i, j));
  91     }
  92   }
  93 };
  94
  95 });