auto_tests/tests/parser.js

   1 /**
   2  * @fileoverview Tests the way that dygraphs parses data.
   3  *
   4  * @author danvk@google.com (Dan Vanderkam)
   5  */
   6
   7 import Dygraph from '../../src/dygraph';
   8 import * as utils from '../../src/dygraph-utils';
   9
  10 describe("parser", function() {
  11
  12 cleanupAfterEach();
  13
  14 it('testDetectLineDelimiter', function() {
  15   var data = "X,Y\r" +
  16       "0,-1\r" +
  17       "1,0\r" +
  18       "2,1\r" +
  19       "3,0\r"
  20   ;
  21   assert.equal("\r", utils.detectLineDelimiter(data));
  22
  23   data = "X,Y\n" +
  24       "0,-1\n" +
  25       "1,0\n" +
  26       "2,1\n" +
  27       "3,0\n"
  28   ;
  29   assert.equal("\n", utils.detectLineDelimiter(data));
  30
  31   data = "X,Y\n\r" +
  32       "0,-1\n\r" +
  33       "1,0\n\r" +
  34       "2,1\n\r" +
  35       "3,0\n\r"
  36   ;
  37   assert.equal("\n\r", utils.detectLineDelimiter(data));
  38 });
  39
  40 it('testParseDosNewlines', function() {
  41   var opts = {
  42     width: 480,
  43     height: 320
  44   };
  45   var data = "X,Y\r" +
  46       "0,-1\r" +
  47       "1,0\r" +
  48       "2,1\r" +
  49       "3,0\r"
  50   ;
  51
  52   var g = new Dygraph('graph', data, opts);
  53   assert.equal(0, g.getValue(0, 0));
  54   assert.equal(-1, g.getValue(0, 1));
  55   assert.equal(1, g.getValue(1, 0));
  56   assert.equal(0, g.getValue(1, 1));
  57   assert.deepEqual(['X', 'Y'], g.getLabels());
  58 });
  59
  60 it('should parse tab-delimited data', function() {
  61   var data = "X\tY\n" +
  62       "0\t-1\n" +
  63       "1\t0\n" +
  64       "2\t1\n" +
  65       "3\t0\n";
  66
  67   var g = new Dygraph('graph', data);
  68   assert.equal(0, g.getValue(0, 0));
  69   assert.equal(-1, g.getValue(0, 1));
  70   assert.equal(1, g.getValue(1, 0));
  71   assert.equal(0, g.getValue(1, 1));
  72   assert.deepEqual(['X', 'Y'], g.getLabels());
  73 });
  74
  75 it('should parse fractions', function() {
  76   var data = "X,Y\n" +
  77       "0,1/4\n" +
  78       "1,2/4\n" +
  79       "2,3/4\n" +
  80       "3,4/4\n";
  81   var g = new Dygraph('graph', data, {fractions:true});
  82
  83   assert.equal(0, g.getValue(0, 0));
  84   assert.deepEqual([1, 4], g.getValue(0, 1));
  85   assert.equal(1, g.getValue(1, 0));
  86   assert.deepEqual([2, 4], g.getValue(1, 1));
  87   assert.deepEqual(['X', 'Y'], g.getLabels());
  88 });
  89
  90 it('should parse error bars', function() {
  91   var data = "X,Y\n" +
  92       "0,1,4\n" +
  93       "1,2,4\n" +
  94       "2,3,4\n" +
  95       "3,4,4\n";
  96   var g = new Dygraph('graph', data, {errorBars:true});
  97
  98   assert.equal(0, g.getValue(0, 0));
  99   assert.deepEqual([1, 4], g.getValue(0, 1));
 100   assert.equal(1, g.getValue(1, 0));
 101   assert.deepEqual([2, 4], g.getValue(1, 1));
 102   assert.deepEqual(['X', 'Y'], g.getLabels());
 103 });
 104
 105 it('should parse custom bars', function() {
 106   var data = "X,Y1,Y2\n" +
 107              "1,10;20;30,20;5;25\n" +
 108              "2,10;25;35,20;10;25\n";
 109   var g = new Dygraph('graph', data, {customBars:true});
 110
 111   assert.equal(1, g.getValue(0, 0));
 112   assert.deepEqual([10, 20, 30], g.getValue(0, 1));
 113   assert.deepEqual([20, 5, 25], g.getValue(0, 2));
 114   assert.equal(2, g.getValue(1, 0));
 115   assert.deepEqual([10, 25, 35], g.getValue(1, 1));
 116   assert.deepEqual([20, 10, 25], g.getValue(1, 2));
 117   assert.deepEqual(['X', 'Y1', 'Y2'], g.getLabels());
 118 });
 119
 120 /*
 121 it('should warn on unsorted input', function() {
 122 });
 123
 124 it('should warn on different length columns', function() {
 125 });
 126
 127 it('should detect double-labeled data', function() {
 128 });
 129 */
 130
 131 });