Merge pull request #63 from kberg/master
[dygraphs.git] / auto_tests / tests / simple_drawing.js
1 // Copyright (c) 2011 Google, Inc.
2 //
3 // Permission is hereby granted, free of charge, to any person obtaining a copy
4 // of this software and associated documentation files (the "Software"), to deal
5 // in the Software without restriction, including without limitation the rights
6 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
7 // copies of the Software, and to permit persons to whom the Software is
8 // furnished to do so, subject to the following conditions:
9 //
10 // The above copyright notice and this permission notice shall be included in
11 // all copies or substantial portions of the Software.
12 //
13 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
16 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
17 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
18 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
19 // THE SOFTWARE.
20
21 /**
22 * @fileoverview Test cases for drawing simple lines.
23 *
24 * @author konigsberg@google.com (Robert Konigsberg)
25 */
26 var ZERO_TO_FIFTY = [[ 10, 0 ] , [ 20, 50 ]];
27
28 var SimpleDrawingTestCase = TestCase("simple-drawing");
29
30 var _origFunc = Dygraph.getContext;
31 SimpleDrawingTestCase.prototype.setUp = function() {
32 document.body.innerHTML = "<div id='graph'></div>";
33 Dygraph.getContext = function(canvas) {
34 return new Proxy(_origFunc(canvas));
35 }
36 };
37
38 SimpleDrawingTestCase.prototype.tearDown = function() {
39 Dygraph.getContext = _origFunc;
40 };
41
42 SimpleDrawingTestCase.prototype.testDrawSimpleRangePlusOne = function() {
43 var opts = {
44 drawXGrid: false,
45 drawYGrid: false,
46 drawXAxis: false,
47 drawYAxis: false,
48 valueRange: [0,51] }
49
50 var graph = document.getElementById("graph");
51 var g = new Dygraph(graph, ZERO_TO_FIFTY, opts);
52 var htx = g.hidden_ctx_;
53
54 CanvasAssertions.assertLineDrawn(htx, [56,300], [475,5.8], {
55 strokeStyle: "#008080",
56 lineWidth: 1
57 });
58 }