| <script src="../../resources/testharness.js"></script> |
| <script src="../../resources/testharnessreport.js"></script> |
| <body> |
| <canvas id="canvas" width="200" height="200"></canvas> |
| <script> |
| |
| var ctx = document.getElementById('canvas').getContext('2d'); |
| |
| function checkResult(expectedColors, sigma) { |
| data = ctx.getImageData(75, 75, 1, 1).data; |
| for (var i = 0; i < 4; i++) |
| assert_approx_equals(data[i], expectedColors[i], sigma); |
| } |
| |
| function drawRectangleOn(contextOrPath) { |
| contextOrPath.rect(25, 25, 50, 50); |
| } |
| |
| function testStrokeWith(path) { |
| ctx.fillStyle = 'rgb(255,0,0)'; |
| ctx.beginPath(); |
| ctx.fillRect(0, 0, 100, 100); |
| ctx.strokeStyle = 'rgb(0,255,0)'; |
| ctx.lineWidth = 5; |
| if (path) { |
| ctx.stroke(path); |
| } else { |
| ctx.beginPath(); |
| drawRectangleOn(ctx); |
| ctx.stroke(); |
| } |
| checkResult([0, 255, 0, 255], 5); |
| } |
| |
| test(function(t) { |
| var path = new Path2D(); |
| drawRectangleOn(path); |
| |
| testStrokeWith(); |
| testStrokeWith(path); |
| |
| // Test exception cases. |
| assert_throws_js(TypeError, function() { |
| ctx.stroke(null); |
| }); |
| assert_throws_js(TypeError, function() { |
| ctx.stroke(undefined); |
| }); |
| assert_throws_js(TypeError, function() { |
| ctx.stroke([]); |
| }); |
| assert_throws_js(TypeError, function() { |
| ctx.stroke({}); |
| }); |
| }, "Series of tests to ensure stroke() works with optional path parameter."); |
| </script> |
| </body> |
