auto_tests/tests/range_tests.js

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  20
  21
  22 /**
  23  * @fileoverview Test valueRange and dateWindow changes.
  24  *
  25  * @author konigsberg@google.com (Robert Konigsberg)
  26  */
  27 var ZERO_TO_FIFTY = [[ 10, 0 ] , [ 20, 50 ]];
  28 var ZERO_TO_FIFTY_STEPS = function() {
  29   var a = [];
  30   var x = 10;
  31   var y = 0;
  32   var step = 0;
  33   for (step = 0; step <= 50; step++) {
  34     a.push([x + (step * .2), y + step]);
  35   }
  36   return a;
  37 } ();
  38 var FIVE_TO_ONE_THOUSAND = [
  39     [ 1, 10 ], [ 2, 20 ], [ 3, 30 ], [ 4, 40 ] , [ 5, 50 ],
  40     [ 6, 60 ], [ 7, 70 ], [ 8, 80 ], [ 9, 90 ] , [ 10, 1000 ]];
  41
  42 var RangeTestCase = TestCase("range-tests");
  43
  44 RangeTestCase.prototype.setUp = function() {
  45   document.body.innerHTML = "<div id='graph'></div>";
  46 };
  47
  48 RangeTestCase.prototype.createGraph = function(opts) {
  49   var graph = document.getElementById("graph");
  50   var g = new Dygraph(graph, ZERO_TO_FIFTY_STEPS, opts);
  51
  52   assertEquals([10, 20], g.xAxisRange());
  53   assertEquals([0, 55], g.yAxisRange(0));
  54
  55   return g;
  56 };
  57
  58 /**
  59  * Test that changes to valueRange and dateWindow are reflected
  60  * appropriately.
  61  */
  62 RangeTestCase.prototype.testRangeSetOperations = function() {
  63   var g = this.createGraph({valueRange : [ 0, 55 ]});
  64
  65   g.updateOptions({ dateWindow : [ 12, 18 ] });
  66   assertEquals([12, 18], g.xAxisRange());
  67   assertEquals([0, 55], g.yAxisRange(0));
  68
  69   g.updateOptions({ valueRange : [ 10, 40 ] });
  70   assertEquals([12, 18], g.xAxisRange());
  71   assertEquals([10, 40], g.yAxisRange(0));
  72
  73   g.updateOptions({  });
  74   assertEquals([12, 18], g.xAxisRange());
  75   assertEquals([10, 40], g.yAxisRange(0));
  76
  77   g.updateOptions({valueRange : null, axes: {y:{valueRange : [15, 20]}}});
  78   assertEquals([12, 18], g.xAxisRange());
  79   assertEquals([15, 20], g.yAxisRange(0));
  80
  81   g.updateOptions({ dateWindow : null, valueRange : null, axes: null });
  82   assertEquals([10, 20], g.xAxisRange());
  83   assertEquals([0, 55], g.yAxisRange(0));
  84 };
  85
  86 /**
  87  * Verify that when zoomed in by mouse operations, an empty call to
  88  * updateOptions doesn't change the displayed ranges.
  89  */
  90 RangeTestCase.prototype.zoom = function(g, xRange, yRange) {
  91   var originalXRange = g.xAxisRange();
  92   var originalYRange = g.yAxisRange(0);
  93
  94   DygraphOps.dispatchMouseDown(g, xRange[0], yRange[0]);
  95   DygraphOps.dispatchMouseMove(g, xRange[1], yRange[0]); // this is really necessary.
  96   DygraphOps.dispatchMouseUp(g, xRange[1], yRange[0]);
  97
  98   assertEqualsDelta(xRange, g.xAxisRange(), 0.2);
  99   // assertEqualsDelta(originalYRange, g.yAxisRange(0), 0.2); // Not true, it's something in the middle.
 100
 101   var midX = (xRange[1] - xRange[0]) / 2;
 102   DygraphOps.dispatchMouseDown(g, midX, yRange[0]);
 103   DygraphOps.dispatchMouseMove(g, midX, yRange[1]); // this is really necessary.
 104   DygraphOps.dispatchMouseUp(g, midX, yRange[1]);
 105
 106   assertEqualsDelta(xRange, g.xAxisRange(), 0.2);
 107   assertEqualsDelta(yRange, g.yAxisRange(0), 0.2);
 108 }
 109
 110
 111 /**
 112  * Verify that when zoomed in by mouse operations, an empty call to
 113  * updateOptions doesn't change the displayed ranges.
 114  */
 115 RangeTestCase.prototype.testEmptyUpdateOptions_doesntUnzoom = function() {
 116   var g = this.createGraph();
 117   this.zoom(g, [ 11, 18 ], [ 35, 40 ]);
 118
 119   assertEqualsDelta([11, 18], g.xAxisRange(), 0.1);
 120   assertEqualsDelta([35, 40], g.yAxisRange(0), 0.2);
 121
 122   g.updateOptions({});
 123
 124   assertEqualsDelta([11, 18], g.xAxisRange(), 0.1);
 125   assertEqualsDelta([35, 40], g.yAxisRange(0), 0.2);
 126 }
 127
 128 /**
 129  * Verify that when zoomed in by mouse operations, a call to
 130  * updateOptions({ dateWindow : null, valueRange : null }) fully
 131  * unzooms.
 132  */
 133 RangeTestCase.prototype.testRestoreOriginalRanges_viaUpdateOptions = function() {
 134   var g = this.createGraph();
 135   this.zoom(g, [ 11, 18 ], [ 35, 40 ]);
 136
 137   g.updateOptions({ dateWindow : null, valueRange : null });
 138
 139   assertEquals([0, 55], g.yAxisRange(0));
 140   assertEquals([10, 20], g.xAxisRange());
 141 }
 142
 143 /**
 144  * Verify that log scale axis range is properly specified.
 145  */
 146 RangeTestCase.prototype.testLogScaleExcludesZero = function() {
 147   var g = new Dygraph("graph", FIVE_TO_ONE_THOUSAND, { logscale : true });
 148   assertEquals([10, 1099], g.yAxisRange(0));
 149
 150   g.updateOptions({ logscale : false });
 151   assertEquals([0, 1099], g.yAxisRange(0));
 152 }
 153
 154 /**
 155  * Verify that includeZero range is properly specified.
 156  */
 157 RangeTestCase.prototype.testIncludeZeroIncludesZero = function() {
 158   var g = new Dygraph("graph", [[0, 500], [500, 1000]], { includeZero : true });
 159   assertEquals([0, 1100], g.yAxisRange(0));
 160
 161   g.updateOptions({ includeZero : false });
 162   assertEquals([450, 1050], g.yAxisRange(0));
 163 }
 164
 165 /**
 166  * Verify that very large Y ranges don't break things.
 167  */
 168 RangeTestCase.prototype.testHugeRange = function() {
 169   var g = new Dygraph("graph", [[0, -1e120], [1, 1e230]], { includeZero : true });
 170   assertEqualsDelta(1, -1e229 / g.yAxisRange(0)[0], 0.001);
 171   assertEqualsDelta(1, 1.1e230 / g.yAxisRange(0)[1], 0.001);
 172 }