scientific_notation.js

   1 /**
   2  * @fileoverview Tests input data which uses scientific notation.
   3  * This is a regression test for
   4  * http://code.google.com/p/dygraphs/issues/detail?id=186
   5  *
   6  * @author danvk@google.com (Dan Vanderkam)
   7  */
   8
   9 import Dygraph from '../../src/dygraph';
  10 import {assertDeepCloseTo} from './custom_asserts';
  11
  12 describe("scientific-notation", function() {
  13
  14 cleanupAfterEach();
  15
  16 function getXValues(g) {
  17   var xs = [];
  18   for (var i = 0; i < g.numRows(); i++) {
  19     xs.push(g.getValue(i, 0));
  20   }
  21   return xs;
  22 }
  23
  24 it('testScientificInput', function() {
  25   var data = "X,Y\n" +
  26       "1.0e1,-1\n" +
  27       "2.0e1,0\n" +
  28       "3.0e1,1\n" +
  29       "4.0e1,0\n"
  30   ;
  31
  32   var graph = document.getElementById("graph");
  33   var g = new Dygraph(graph, data, {});
  34   assertDeepCloseTo([10, 20, 30, 40], getXValues(g), 1e-6);
  35 });
  36
  37 it('testScientificInputPlus', function() {
  38   var data = "X,Y\n" +
  39       "1.0e+1,-1\n" +
  40       "2.0e+1,0\n" +
  41       "3.0e+1,1\n" +
  42       "4.0e+1,0\n"
  43   ;
  44
  45   var graph = document.getElementById("graph");
  46   var g = new Dygraph(graph, data, {});
  47   assertDeepCloseTo([10, 20, 30, 40], getXValues(g), 1e-6);
  48 });
  49
  50 it('testScientificInputMinus', function() {
  51   var data = "X,Y\n" +
  52       "1.0e-1,-1\n" +
  53       "2.0e-1,0\n" +
  54       "3.0e-1,1\n" +
  55       "4.0e-1,0\n"
  56   ;
  57
  58   var graph = document.getElementById("graph");
  59   var g = new Dygraph(graph, data, {});
  60   assertDeepCloseTo([0.1, 0.2, 0.3, 0.4], getXValues(g), 1e-6);
  61 });
  62
  63 it('testScientificInputMinusCap', function() {
  64   var data = "X,Y\n" +
  65       "1.0E-1,-1\n" +
  66       "2.0E-1,0\n" +
  67       "3.0E-1,1\n" +
  68       "4.0E-1,0\n"
  69   ;
  70
  71   var graph = document.getElementById("graph");
  72   var g = new Dygraph(graph, data, {});
  73   assertDeepCloseTo([0.1, 0.2, 0.3, 0.4], getXValues(g), 1e-6);
  74 });
  75
  76 });