| <!doctype html> |
| <html> |
| <head> |
| <link rel="help" href="https://drafts.csswg.org/cssom/#dom-cssstyledeclaration-setproperty"/> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| </head> |
| <body> |
| <script> |
| var style = document.body.style; |
| |
| test(function() { |
| style.color = 'white'; |
| |
| assert_equals(style.color, 'white'); |
| style.setProperty('color', undefined); |
| assert_equals(style.color, 'white'); |
| }, "Verify that setting a CSS property to undefined has no effect."); |
| |
| test(function() { |
| style.color = 'white'; |
| |
| assert_equals(style.color, 'white'); |
| assert_equals(style.getPropertyPriority('color'), ''); |
| style.setProperty('color', 'red', undefined); |
| assert_equals(style.color, 'red'); |
| assert_equals(style.getPropertyPriority('color'), ''); |
| }, "Verify that setting a CSS property priority to undefined is accepted."); |
| |
| test(function() { |
| style.color = 'white'; |
| |
| assert_equals(style.color, 'white'); |
| style.setProperty('color', null); |
| assert_equals(style.color, ''); |
| }, "Verify that setting a CSS property to null is treated like empty string."); |
| |
| test(function() { |
| style.color = 'white'; |
| |
| assert_equals(style.color, 'white'); |
| style.setProperty('color', 'red', null); |
| assert_equals(style.color, 'red'); |
| }, "Verify that setting a CSS property priority to null is treated like empty string."); |
| </script> |
| </body> |
| </html> |
