| <!DOCTYPE html> |
| <p>Expect to see a black square below this line.</p> |
| <canvas id = 'c' width='100' height='100'></canvas> |
| <script> |
| if (window.testRunner) { |
| testRunner.waitUntilDone(); |
| testRunner.layoutAndPaintAsyncThen(function(){ |
| // Verify that creating a context with alpha:false trigger a graphics |
| // update even though nothing is drawn to the canvas. |
| document.getElementById('c').getContext('2d', { alpha:false }); |
| testRunner.notifyDone(); |
| }); |
| } else { |
| console.log('ERROR: This test requires the testRunner interface.') |
| } |
| </script> |
