Namespace the canvas proxy in auto tests.

[dygraphs.git] / auto_tests / tests / simple_drawing.js

diff --git a/auto_tests/tests/simple_drawing.js b/auto_tests/tests/simple_drawing.js
index 46fb5f8..75a6e87 100644 (file)
--- a/auto_tests/tests/simple_drawing.js
+++ b/auto_tests/tests/simple_drawing.js
@@ -1,4 +1,4 @@
-// Copyright (c)  2011 Google, Inc.
+// Copyright (c) 2011 Google, Inc.
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to deal
@@ -23,46 +23,128 @@
  *
  * @author konigsberg@google.com (Robert Konigsberg)
  */
-var ZERO_TO_FIFTY = [[ 20061010, 0 ] , [ 20061011, 50 ]];
+var ZERO_TO_FIFTY = [[ 10, 0 ] , [ 20, 50 ]];
 
 var SimpleDrawingTestCase = TestCase("simple-drawing");
 
-var _origFunc = Dygraph.getContext;
+SimpleDrawingTestCase._origFunc = Dygraph.getContext;
 SimpleDrawingTestCase.prototype.setUp = function() {
   document.body.innerHTML = "<div id='graph'></div>";
   Dygraph.getContext = function(canvas) {
-    return new Proxy(_origFunc(canvas));
+    return new Proxy(SimpleDrawingTestCase._origFunc(canvas));
   }
 };
 
 SimpleDrawingTestCase.prototype.tearDown = function() {
-  Dygraph.getContext = _origFunc;
+  Dygraph.getContext = SimpleDrawingTestCase._origFunc;
 };
 
-SimpleDrawingTestCase.prototype.testDrawSimple = function() {
-  var graph = document.getElementById("graph");
-  var g = new Dygraph(graph, ZERO_TO_FIFTY, {});
-}
+SimpleDrawingTestCase.prototype.testDrawSimpleRangePlusOne = function() {
+  var opts = {
+    drawXGrid: false,
+    drawYGrid: false,
+    drawXAxis: false,
+    drawYAxis: false,
+    valueRange: [0,51] }
 
-SimpleDrawingTestCase.prototype.testDrawSimpleRangeEquals = function() {
   var graph = document.getElementById("graph");
-  var g = new Dygraph(graph, ZERO_TO_FIFTY, {valueRange: [0,50]});
-}
+  var g = new Dygraph(graph, ZERO_TO_FIFTY, opts);
+  var htx = g.hidden_ctx_;
 
-SimpleDrawingTestCase.prototype.testDrawSimpleRangePlusOne = function() {
+  CanvasAssertions.assertLineDrawn(htx, [0,320], [475,6.2745], {
+    strokeStyle: "#008080",
+    lineWidth: 1
+  });
+  CanvasAssertions.assertBalancedSaveRestore(htx);
+};
+
+// See http://code.google.com/p/dygraphs/issues/detail?id=185
+SimpleDrawingTestCase.prototype.testDrawSimpleRangeZeroToFifty = function() {
   var opts = {
     drawXGrid: false,
     drawYGrid: false,
     drawXAxis: false,
     drawYAxis: false,
-    valueRange: [0,51] }
+    valueRange: [0,50] }
 
   var graph = document.getElementById("graph");
   var g = new Dygraph(graph, ZERO_TO_FIFTY, opts);
   var htx = g.hidden_ctx_;
 
-  CanvasAssertions.assertLineDrawn(htx, [56,300], [475,5.8], {
+  var lines = CanvasAssertions.getLinesDrawn(htx, {
     strokeStyle: "#008080",
     lineWidth: 1
   });
-}
+  assertEquals(1, lines.length);
+  CanvasAssertions.assertBalancedSaveRestore(htx);
+};
+
+SimpleDrawingTestCase.prototype.testDrawWithAxis = function() {
+  var graph = document.getElementById("graph");
+  var g = new Dygraph(graph, ZERO_TO_FIFTY);
+
+  var htx = g.hidden_ctx_;
+  CanvasAssertions.assertBalancedSaveRestore(htx);
+};
+
+/**
+ * Tests that it is drawing dashes, and it remember the dash history between
+ * points.
+ */
+SimpleDrawingTestCase.prototype.testDrawSimpleDash = function() {
+  var opts = {
+      drawXGrid: false,
+      drawYGrid: false,
+      drawXAxis: false,
+      drawYAxis: false,
+      'Y1': {strokePattern: [25, 7, 7, 7]},
+      colors: ['#ff0000']
+  };
+
+  var graph = document.getElementById("graph");
+  // Set the dims so we pass if default changes.
+  graph.style.width='480px';
+  graph.style.height='320px';
+  var g = new Dygraph(graph, [[1, 4], [2, 5], [3, 3], [4, 7], [5, 9]], opts);
+  htx = g.hidden_ctx_;
+
+  // TODO(danvk): figure out a good way to restore this test.
+  // assertEquals(29, CanvasAssertions.numLinesDrawn(htx, "#ff0000"));
+  CanvasAssertions.assertBalancedSaveRestore(htx);
+};
+
+/**
+ * Tests that thick lines are drawn continuously.
+ * Regression test for http://code.google.com/p/dygraphs/issues/detail?id=328
+ */
+SimpleDrawingTestCase.prototype.testDrawThickLine = function() {
+  var opts = {
+    drawXGrid: false,
+    drawYGrid: false,
+    drawXAxis: false,
+    drawYAxis: false,
+    strokeWidth: 15,
+    colors: ['#ff0000']
+  };
+
+  var graph = document.getElementById("graph");
+  // Set the dims so we pass if default changes.
+  graph.style.width='480px';
+  graph.style.height='320px';
+  var g = new Dygraph(graph, [[1, 2], [2, 5], [3, 2], [4, 7], [5, 0]], opts);
+  htx = g.hidden_ctx_;
+
+  // There's a big gap in the line at (2, 5)
+  // If the bug is fixed, then there should be some red going up from here.
+  var xy = g.toDomCoords(2, 5);
+  var x = Math.round(xy[0]), y = Math.round(xy[1]);
+
+  var sampler = new PixelSampler(g);
+  assertEquals([255,0,0,255], sampler.colorAtPixel(x, y));
+  assertEquals([255,0,0,255], sampler.colorAtPixel(x, y - 1));
+  assertEquals([255,0,0,255], sampler.colorAtPixel(x, y - 2));
+
+  // TODO(danvk): figure out a good way to restore this test.
+  // assertEquals(29, CanvasAssertions.numLinesDrawn(htx, "#ff0000"));
+  CanvasAssertions.assertBalancedSaveRestore(htx);
+};