| <!DOCTYPE HTML> |
| <title>SVGAnimatedBoolean interface - utilizing the preserveAlpha property of SVGFEConvolveMatrixElement</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script> |
| test(function() { |
| // This test checks the SVGAnimatedBoolean API - utilizing the preserveAlpha property of SVGFEConvolveMatrixElement. |
| |
| var convElement = document.createElementNS("http://www.w3.org/2000/svg", "feConvolveMatrix"); |
| // Check initial preserveAlpha value. |
| assert_false(convElement.preserveAlpha.baseVal); |
| |
| // Set value to true. |
| convElement.preserveAlpha.baseVal = true; |
| assert_true(convElement.preserveAlpha.baseVal); |
| |
| // Caching baseVal in local variable. |
| var baseVal = convElement.preserveAlpha.baseVal; |
| assert_true(baseVal); |
| |
| // Modify local baseVal variable to false. |
| baseVal = false; |
| |
| // Assure that convElement.preserveAlpha has not been changed, but the local baseVal variable. |
| assert_false(baseVal); |
| assert_true(convElement.preserveAlpha.baseVal); |
| |
| // Check assigning values of various types. |
| // ECMA-262, 9.2, "ToBoolean" |
| convElement.preserveAlpha.baseVal = convElement.preserveAlpha; |
| assert_true(convElement.preserveAlpha.baseVal); |
| |
| convElement.preserveAlpha.baseVal = null; |
| assert_false(convElement.preserveAlpha.baseVal); |
| |
| convElement.preserveAlpha.baseVal = 'aString'; |
| assert_true(convElement.preserveAlpha.baseVal); |
| |
| convElement.preserveAlpha.baseVal = false; |
| assert_false(convElement.preserveAlpha.baseVal); |
| |
| convElement.preserveAlpha.baseVal = convElement; |
| assert_true(convElement.preserveAlpha.baseVal); |
| }); |
| </script> |