| <script src="../../resources/testharness.js"></script> |
| <script src="../../resources/testharnessreport.js"></script> |
| <body> |
| <script> |
| test(function(t) { |
| var ctx = document.createElement('canvas').getContext('2d'); |
| |
| // Clear rect with height = width = 0. |
| ctx.fillStyle = 'red'; |
| ctx.fillRect(0, 0, 1, 1); |
| ctx.clearRect(0, 0, 0, 0); |
| |
| var imageData = ctx.getImageData(0, 0, 1, 1); |
| var imgdata = imageData.data; |
| assert_equals(imgdata[0], 255); |
| assert_equals(imgdata[1], 0); |
| assert_equals(imgdata[2], 0); |
| |
| ctx.clearRect(0, 0, 1, 1); |
| |
| // Clear rect with height = 0, width = 1. |
| ctx.fillStyle = 'red'; |
| ctx.fillRect(0, 0, 1, 1); |
| ctx.clearRect(0, 0, 1, 0); |
| |
| var imageData = ctx.getImageData(0, 0, 1, 1); |
| var imgdata = imageData.data; |
| assert_equals(imgdata[0], 255); |
| assert_equals(imgdata[1], 0); |
| assert_equals(imgdata[2], 0); |
| |
| ctx.clearRect(0, 0, 1, 1); |
| |
| // Clear rect with height = 1, width = 0. |
| ctx.fillStyle = 'red'; |
| ctx.fillRect(0, 0, 1, 1); |
| ctx.clearRect(0, 0, 0, 1); |
| |
| var imageData = ctx.getImageData(0, 0, 1, 1); |
| var imgdata = imageData.data; |
| assert_equals(imgdata[0], 255); |
| assert_equals(imgdata[1], 0); |
| assert_equals(imgdata[2], 0); |
| |
| }, "Series of tests to ensure correct behavior of canvas.clearRect()."); |
| </script> |
| </body> |
