| <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN"> |
| <html> |
| <head> |
| <script src="../../resources/testharness.js"></script> |
| <script src="../../resources/testharnessreport.js"></script> |
| </head> |
| <body> |
| <script> |
| function createCanvas(width, height) { |
| var canvas = document.createElement("canvas"); |
| canvas.width = width; |
| canvas.height = height; |
| return canvas; |
| } |
| |
| test(function() { |
| var width = 50; |
| var height = 50; |
| var canvas1 = createCanvas(width, height); |
| var offscreenCanvas1; |
| try { |
| offscreenCanvas1 = canvas1.transferControlToOffscreen(); |
| assert_equals(offscreenCanvas1.width, width); |
| assert_equals(offscreenCanvas1.height, height); |
| } catch (ex) { |
| assert_false(ex.message); |
| } |
| }, "Tests whether transferControlToOffscreen can be run correctly."); |
| |
| test(function() { |
| var canvas2 = createCanvas(50, 50); |
| var offscreenCanvas2; |
| var ctx = canvas2.getContext("2d"); |
| assert_throws("InvalidStateError", function() { |
| offscreenCanvas2 = canvas2.transferControlToOffscreen(); |
| assert_false("transferControlToOffscreen from a canvas with context didn't throw an exception."); |
| }, "transferControlToOffscreen from a canvas with context throws an exception"); |
| }, "Tests whether transferControlToOffscreen throws exception correctly."); |
| |
| test(function() { |
| var canvas3 = createCanvas(10, 10); |
| var offscreenCanvas3 = canvas3.transferControlToOffscreen(); |
| assert_equals(offscreenCanvas3.width, 10); |
| assert_equals(offscreenCanvas3.height, 10); |
| assert_throws("InvalidStateError", function() { offscreenCanvas3.width = 20; }); |
| assert_throws("InvalidStateError", function() { offscreenCanvas3.height = 20; }); |
| }, "Test if resizing on offscreencanvas transferred from html canvas has thrown exceptions."); |
| |
| </script> |
| </body> |
| </html> |