| <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN"> |
| <html> |
| <head> |
| <script src="../js/resources/js-test-pre.js"></script> |
| </head> |
| <script> |
| window.jsTestIsAsync = true; |
| description("This test checks behavior of Canvas::drawImage with a broken source image."); |
| |
| var InvalidStateError = "InvalidStateError: An attempt was made to use an object that is not, or is no longer, usable."; |
| var TypeMismatchError = "TypeMismatchError: The type of an object was incompatible with the expected type of the parameter associated to the object."; |
| |
| // Create an image with invalid data. |
| var invalidImage = new Image(); |
| invalidImage.src = 'resources/repaint.js'; |
| invalidImage.onerror = draw; |
| |
| var ctx = document.createElement("canvas").getContext('2d'); |
| function draw() { |
| // null images should throw TypeError |
| shouldThrow("ctx.drawImage(null, 0, 0)", "TypeMismatchError"); |
| shouldThrow("ctx.drawImage(null, 0, 0, 20, 20)", "TypeMismatchError"); |
| shouldThrow("ctx.drawImage(null, 0, 0, 20, 20, 0, 0, 20, 20)", "TypeMismatchError"); |
| |
| // broken images should throw InvalidStateError |
| shouldThrow("ctx.drawImage(invalidImage, 0, 0)", "InvalidStateError"); |
| shouldThrow("ctx.drawImage(invalidImage, 0, 0, 20, 20)", "InvalidStateError"); |
| shouldThrow("ctx.drawImage(invalidImage, 0, 0, 20, 20, 0, 0, 20, 20)", "InvalidStateError"); |
| |
| // InvalidStateError takes precedence over IndexSizeError |
| shouldThrow("ctx.drawImage(invalidImage, 0, 0, 0, 20)", "InvalidStateError"); |
| shouldThrow("ctx.drawImage(invalidImage, 0, 0, 0, 20, 0, 0, 20, 20)", "InvalidStateError"); |
| |
| finishJSTest(); |
| } |
| </script> |
| <script src="../js/resources/js-test-post.js"></script> |
| </body> |
| </html> |
