auto_tests/tests/selection.js

   1 // Copyright 2011 Google Inc. All Rights Reserved.
   2
   3 /**
   4  * @fileoverview Regression test based on an optimization w/
   5  * unforeseen consequences.
   6  * @author danvk@google.com (Dan Vanderkam)
   7  */
   8
   9 describe("selection", function() {
  10
  11 beforeEach(function() {
  12   document.body.innerHTML = "<div id='graph'></div>";
  13 });
  14
  15 it('testSetGetSelection', function() {
  16   var graph = document.getElementById("graph");
  17   var g = new Dygraph(graph,
  18     "X,Y\n" +
  19     "1,1\n" +
  20     "50,50\n" +
  21     "100,100\n"
  22   );
  23
  24   g.setSelection(0);
  25   assert.equal(0, g.getSelection());
  26   g.setSelection(1);
  27   assert.equal(1, g.getSelection());
  28   g.setSelection(2);
  29   assert.equal(2, g.getSelection());
  30 });
  31
  32 it('testSetGetSelectionDense', function() {
  33   var graph = document.getElementById("graph");
  34   var g = new Dygraph(graph,
  35     "X,Y\n" +
  36     "1,1\n" +
  37     "50,50\n" +
  38     "50.0001,50.0001\n" +
  39     "100,100\n"
  40   );
  41
  42   g.setSelection(0);
  43   assert.equal(0, g.getSelection());
  44   g.setSelection(1);
  45   assert.equal(1, g.getSelection());
  46   g.setSelection(2);
  47   assert.equal(2, g.getSelection());
  48   g.setSelection(3);
  49   assert.equal(3, g.getSelection());
  50 });
  51
  52 it('testSetGetSelectionMissingPoints', function() {
  53   var dataHandler = function() {};
  54   dataHandler.prototype = new Dygraph.DataHandlers.DefaultHandler();
  55   dataHandler.prototype.seriesToPoints = function(series, setName, boundaryIdStart) {
  56     var val = null;
  57     if (setName == 'A') {
  58       val = 1;
  59     } else if (setName == 'B') {
  60       val = 2;
  61     } else if (setName == 'C') {
  62       val = 3;
  63     }
  64     return [{
  65       x: NaN,
  66       y: NaN,
  67       xval: val,
  68       yval: val,
  69       name: setName,
  70       idx: val - 1
  71     }];
  72   };
  73   var graph = document.getElementById("graph");
  74   var g = new Dygraph(graph,
  75     "X,A,B,C\n" +
  76     "1,1,,\n" +
  77     "2,,2,\n" +
  78     "3,,,3\n",
  79     {
  80       dataHandler: dataHandler
  81     }
  82   );
  83
  84   g.setSelection(0);
  85   assert.equal(0, g.getSelection());
  86   g.setSelection(1);
  87   assert.equal(1, g.getSelection());
  88   g.setSelection(2);
  89   assert.equal(2, g.getSelection());
  90 });
  91
  92 });