| <!DOCTYPE html> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <script src="../../resources/js-test.js"></script> |
| <script> |
| description("This test passes if there is not crash and there is a TypeError exception. This verifies that attributeStyleMap.append throws an exception when appending a CSSVariableReferenceValue property"); |
| // see: https://drafts.css-houdini.org/css-typed-om/#dom-stylepropertymap-append |
| window.jsTestIsAsync = true; |
| |
| function runTest() { |
| p = document.getElementById('element'); |
| body = document.getElementById('body'); |
| shouldThrowErrorName("p.attributeStyleMap.append('background-size', body.computedStyleMap().get('-webkit-mask-position'))", "TypeError"); |
| |
| finishJSTest(); |
| } |
| </script> |
| </head> |
| <body id="body" onload="setTimeout(runTest, 20)"> |
| <p id="element"></p> |
| </body> |
| </html> |
