| description("Series of tests to ensure correct behaviour of composite on a fully transparent color."); |
| var ctx = document.createElement('canvas').getContext('2d'); |
| |
| ctx.globalCompositeOperation = "source-over"; |
| ctx.fillStyle = 'rgba(0,0,0,0)'; |
| ctx.fillRect(0,0,100,100); |
| |
| ctx.save(); |
| ctx.translate(0,100); |
| ctx.scale(1,-1); |
| ctx.fillStyle = 'green'; |
| ctx.fillRect(0,0,100,100); |
| ctx.restore(); |
| |
| var imageData = ctx.getImageData(1, 1, 98, 98); |
| var imgdata = imageData.data; |
| shouldBe("imgdata[4]", "0"); |
| shouldBe("imgdata[5]", "128"); |
| shouldBe("imgdata[6]", "0"); |
