| <!DOCTYPE html> |
| <link rel="help" href="https://drafts.css-houdini.org/css-properties-values-api-1/#dom-propertydescriptor-initialvalue" /> |
| <link rel="help" href="https://drafts.css-houdini.org/css-properties-values-api-1/#register-a-custom-property" /> |
| <link rel="help" href="https://drafts.css-houdini.org/css-properties-values-api-1/#substitution" /> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="./resources/utils.js"></script> |
| <div id=target></div> |
| <script> |
| |
| function test_initial_value(reg, expected) { |
| let suffix = reg.inherits === true ? ', inherits' : ''; |
| test(function(){ |
| let name = generate_property(reg); |
| let actual = getComputedStyle(target).getPropertyValue(name); |
| assert_equals(actual, expected); |
| }, `Initial value for ${reg.syntax} correctly computed [${reg.initialValue}${suffix}]`); |
| } |
| |
| test_initial_value({ syntax: '<length>', initialValue: 'calc(10px + 15px)' }, '25px'); |
| test_initial_value({ syntax: '<length>', initialValue: '1in' }, '96px'); |
| test_initial_value({ syntax: '<length>', initialValue: '2.54cm' }, '96px'); |
| test_initial_value({ syntax: '<length>', initialValue: '25.4mm' }, '96px'); |
| test_initial_value({ syntax: '<length>', initialValue: '6pc' }, '96px'); |
| test_initial_value({ syntax: '<length>', initialValue: '72pt' }, '96px'); |
| test_initial_value({ syntax: '<percentage>', initialValue: 'calc(10% + 20%)' }, '30%'); |
| test_initial_value({ syntax: '<length-percentage>', initialValue: 'calc(1in + 10% + 4px)' }, 'calc(10% + 100px)'); |
| test_initial_value({ syntax: '<color>', initialValue: 'pink', inherits: true }, 'rgb(255, 192, 203)'); |
| test_initial_value({ syntax: '<color>', initialValue: 'purple' }, 'rgb(128, 0, 128)'); |
| test_initial_value({ syntax: '<transform-function>', initialValue: 'rotate(42deg)' }, 'rotate(42deg)'); |
| test_initial_value({ syntax: '<transform-list>', initialValue: 'scale(calc(2 + 2))' }, 'scale(4)'); |
| test_initial_value({ syntax: '<transform-list>', initialValue: 'scale(calc(2 + 1)) translateX(calc(3px + 1px))' }, 'scale(3) translateX(4px)'); |
| test_initial_value({ syntax: '<url>', initialValue: 'url(a)' }, |
| `url("${new URL('a', document.baseURI)}")`); |
| test_initial_value({ syntax: '<url>+', initialValue: 'url(a) url(a)' }, |
| `url("${new URL('a', document.baseURI)}") url("${new URL('a', document.baseURI)}")`); |
| |
| // Test that the initial value of the custom property 'reg' is successfully |
| // substituted into 'property'. |
| function test_substituted_value(reg, property, expected) { |
| let inherits_text = reg.inherits === true ? 'inherited' : 'non-inherited'; |
| test(function(){ |
| try { |
| let name = generate_property(reg); |
| target.style = `${property}:var(${name});`; |
| assert_equals(getComputedStyle(target).getPropertyValue(property), expected); |
| } finally { |
| target.style = ''; |
| } |
| }, `Initial ${inherits_text} value can be substituted [${reg.initialValue}, ${property}]`); |
| } |
| |
| test_substituted_value({ syntax: '<color>', initialValue: 'purple', inherits: true }, 'color', 'rgb(128, 0, 128)'); |
| test_substituted_value({ syntax: '<color>', initialValue: 'pink' }, 'background-color', 'rgb(255, 192, 203)'); |
| |
| // Registered properties shall substitute as a token sequence equivalent to |
| // their computed value. |
| test_substituted_value({ syntax: 'foo', initialValue: '\tfoo\t' }, '--x', 'foo'); |
| test_substituted_value({ syntax: '<angle>', initialValue: '\t1turn' }, '--x', '360deg'); |
| test_substituted_value({ syntax: '<color>', initialValue: ' pink ' }, '--x', 'rgb(255, 192, 203)'); |
| test_substituted_value({ syntax: '<custom-ident>', initialValue: '\ttest' }, '--x', 'test'); |
| test_substituted_value({ syntax: '<integer>', initialValue: 'calc(20 + 20 + 10)' }, '--x', '50'); |
| test_substituted_value({ syntax: '<length-percentage>', initialValue: '\tcalc(13% + 37px)' }, '--x', 'calc(13% + 37px)'); |
| test_substituted_value({ syntax: '<length>', initialValue: 'calc(10px + 15px)' }, '--x', '25px'); |
| test_substituted_value({ syntax: '<number>', initialValue: 'calc(13 + 37)' }, '--x', '50'); |
| test_substituted_value({ syntax: '<percentage>', initialValue: 'calc(13% + 37%)' }, '--x', '50%'); |
| test_substituted_value({ syntax: '<time>', initialValue: '2000ms' }, '--x', '2s'); |
| test_substituted_value({ syntax: '<transform-function>', initialValue: 'scale(calc(2 + 2))' }, '--x', 'scale(4)'); |
| test_substituted_value({ syntax: '<transform-list>', initialValue: 'scale(calc(2 + 2)) translateX(calc(3px + 1px))' }, '--x', 'scale(4) translateX(4px)'); |
| |
| </script> |