| <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN"> |
| <html> |
| <head> |
| <script src="../../resources/js-test-pre.js"></script> |
| </head> |
| <body> |
| <script> |
| description('Test constructors of ImageData.'); |
| |
| ctx = document.createElement('canvas').getContext('2d'); |
| ctx.fillStyle = 'green'; |
| ctx.fillRect(0,0,10,10); |
| var imageData = ctx.getImageData(0,0,10,10); |
| |
| debug('Test invalid ImageData constructor arguments.') |
| shouldThrowErrorName('new ImageData()', 'TypeError'); |
| shouldThrowErrorName('new ImageData(1)', 'TypeError'); |
| shouldThrowErrorName('new ImageData(new Uint8ClampedArray([1,2,3,4]));', 'TypeError'); |
| shouldThrowErrorName('new ImageData(0, 0)', 'IndexSizeError'); |
| shouldThrowErrorName('new ImageData(20, 0)', 'IndexSizeError'); |
| shouldThrowErrorName('new ImageData(0, 20)', 'IndexSizeError'); |
| shouldThrowErrorName('new ImageData(-20, 20)', 'RangeError'); |
| shouldThrowErrorName('new ImageData(20, -20)', 'RangeError'); |
| shouldThrowErrorName('new ImageData(null, 20)', 'IndexSizeError'); |
| shouldThrowErrorName('new ImageData(32768, 32768)', 'RangeError'); |
| shouldThrowErrorName('new ImageData(null, 20, 20)', 'TypeError'); |
| shouldThrowErrorName('new ImageData(imageData, 20, 20)', 'TypeError'); |
| shouldThrowErrorName('new ImageData(imageData, 0)', 'IndexSizeError'); |
| shouldThrowErrorName('new ImageData(imageData, 20, 0)', 'TypeError'); |
| shouldThrowErrorName('new ImageData(imageData, 0, 20)', 'TypeError'); |
| shouldThrowErrorName('new ImageData(imageData, 10, 5)', 'TypeError'); |
| shouldThrowErrorName('new ImageData(imageData.data, 10, 5)', 'IndexSizeError'); |
| shouldThrowErrorName('new ImageData(imageData.data, -10, 5)', 'IndexSizeError'); |
| shouldThrowErrorName('new ImageData(imageData.data, 10, -10)', 'IndexSizeError'); |
| shouldThrowErrorName('new ImageData(new Uint8ClampedArray([1,2,3,4,5,6,7,8]),536870913,2);', 'IndexSizeError'); |
| shouldThrowErrorName('new ImageData({},2,2);', 'TypeError'); |
| shouldThrowErrorName('new ImageData(undefined,2,2);', 'TypeError'); |
| shouldThrowErrorName('new ImageData("none",2,2);', 'TypeError'); |
| shouldThrowErrorName('new ImageData(0,2,2);', 'TypeError'); |
| shouldThrowErrorName('new ImageData(imageData.data, 32768, 32768)', 'IndexSizeError'); |
| shouldThrowErrorName('new ImageData(imageData.data, Infinity, Infinity)', 'IndexSizeError'); |
| shouldThrowErrorName('new ImageData(imageData.data, NaN, NaN)', 'IndexSizeError'); |
| shouldThrowErrorName('new ImageData(imageData.data, 10, 0)', 'IndexSizeError'); |
| debug(''); |
| |
| debug('Test valid ImageData constructors.') |
| new ImageData(10, 10); |
| new ImageData(imageData.data, 10, 10); |
| new ImageData(imageData.data, 10); |
| |
| debug('Test that we got the pixel array from imageData.'); |
| var newImageData = new ImageData(imageData.data, 10, 10); |
| shouldBe('imageData.data[1]', '128'); |
| debug(''); |
| |
| debug('Test that we got a reference rather than a copy.') |
| newImageData.data[1] = 100; |
| shouldBe('imageData.data[1]','100'); |
| debug(''); |
| |
| function testTransparentBlack(data) { |
| for (var i = 0; i < data.length; ++i) { |
| if (data[i] != 0) |
| return false; |
| } |
| return true; |
| } |
| |
| var imageData2 = new ImageData(100,100); |
| shouldBeTrue('testTransparentBlack(imageData2.data)'); |
| |
| var data = new Uint8ClampedArray(400); |
| var imageData2 = new ImageData(data, 20, 5); |
| shouldBe("imageData2.data", "data"); |
| |
| </script> |
| <script src="../../resources/js-test-post.js"></script> |
| </body> |
| </html> |
