| <!DOCTYPE html> |
| <script src="../../resources/js-test.js"></script> |
| <script> |
| description("Tests that the OffScreenCanvas can handle invalid arguments"); |
| |
| // Since blink uses signed int internally, this case tests how the constructor |
| // responds to the arguments that are larger than INT_MAX which would cause |
| // overflow. The current implementation is expected to clamp. |
| var setWidth = Math.pow(2, 31); |
| var setHeight = Math.pow(2, 31); |
| var obj = {Name: "John Doe", Age: 30}; |
| |
| var canvas1 = new OffScreenCanvas(setWidth, setHeight); |
| shouldBe("canvas1.width", "setWidth-1"); |
| shouldBe("canvas1.height", "setHeight-1"); |
| |
| canvas1.width = null; |
| canvas1.height = null; |
| shouldBe("canvas1.width", "0"); |
| shouldBe("canvas1.height", "0"); |
| |
| shouldThrow("new OffScreenCanvas(-1, -1)"); |
| |
| var canvas2 = new OffScreenCanvas(null, null); |
| shouldBe("canvas2.width", "0"); |
| shouldBe("canvas2.height", "0"); |
| |
| canvas2.width = setWidth; |
| canvas2.height = setHeight; |
| shouldBe("canvas2.width", "setWidth-1"); |
| shouldBe("canvas2.height", "setHeight-1"); |
| |
| shouldThrow("canvas2.width = -1"); |
| shouldThrow("canvas2.height = -1"); |
| |
| shouldThrow("canvas2.width = obj"); |
| shouldThrow("canvas2.height = obj"); |
| |
| shouldThrow("new OffScreenCanvas(obj, obj)"); |
| </script> |
