auto_tests/tests/numeric_ticker.js

   1 /**
   2  * @fileoverview Test cases for the numeric tick-generating functions.
   3  * These were generated by adding logging code to the old ticker functions. The
   4  * tests serve to track existing behavior should it change in the future.
   5  *
   6  * @author danvdk@gmail.com (Dan Vanderkam)
   7  */
   8
   9 var NumericTickerTestCase = TestCase("numeric-ticker-tests");
  10
  11 NumericTickerTestCase.prototype.setUp = function() {
  12   document.body.innerHTML = "<div id='graph'></div>";
  13 };
  14
  15 NumericTickerTestCase.prototype.createOptionsViewForAxis = function(axis, dict) {
  16   return function (x) {
  17     if (dict && dict.hasOwnProperty(x)) {
  18       return dict[x];
  19     }
  20     if (Dygraph.DEFAULT_ATTRS.axes[axis].hasOwnProperty(x)) {
  21       return Dygraph.DEFAULT_ATTRS.axes[axis][x];
  22     }
  23     if (Dygraph.DEFAULT_ATTRS.hasOwnProperty(x)) {
  24       return Dygraph.DEFAULT_ATTRS[x];
  25     }
  26     if (x == 'axisLabelFormatter') return null;
  27     throw "mysterious " + axis + "-axis option: " + x;
  28   };
  29 };
  30
  31 NumericTickerTestCase.prototype.testBasicNumericTicker = function() {
  32   var opts = {"logscale":null,"labelsKMG2":false,"labelsKMB":false};
  33   var options = this.createOptionsViewForAxis('y', opts);
  34
  35   var ticks = Dygraph.numericTicks(-0.4, 4.4, 320, options);
  36   var expected_ticks = [
  37     {"v":-0.5,"label":"-0.5"},
  38     {"v":0,"label":"0"},
  39     {"v":0.5,"label":"0.5"},
  40     {"v":1,"label":"1"},
  41     {"v":1.5,"label":"1.5"},
  42     {"v":2,"label":"2"},
  43     {"v":2.5,"label":"2.5"},
  44     {"v":3,"label":"3"},
  45     {"v":3.5,"label":"3.5"},
  46     {"v":4,"label":"4"},
  47     {"v":4.5,"label":"4.5"}];
  48   assertEquals(expected_ticks, ticks);
  49
  50   ticks = Dygraph.numericTicks(1, 84, 540, options);
  51   var expected_ticks = [
  52     {"v":0,"label":"0"},
  53     {"v":5,"label":"5"},
  54     {"v":10,"label":"10"},
  55     {"v":15,"label":"15"},
  56     {"v":20,"label":"20"},
  57     {"v":25,"label":"25"},
  58     {"v":30,"label":"30"},
  59     {"v":35,"label":"35"},
  60     {"v":40,"label":"40"},
  61     {"v":45,"label":"45"},
  62     {"v":50,"label":"50"},
  63     {"v":55,"label":"55"},
  64     {"v":60,"label":"60"},
  65     {"v":65,"label":"65"},
  66     {"v":70,"label":"70"},
  67     {"v":75,"label":"75"},
  68     {"v":80,"label":"80"},
  69     {"v":85,"label":"85"}
  70   ];
  71   assertEquals(expected_ticks, ticks);
  72 };