| <!doctype html> |
| <meta charset="utf-8"> |
| <title>CSSMathInvert.type</title> |
| <link rel="help" href="https://drafts.css-houdini.org/css-typed-om-1/#type-of-a-cssmathvalue"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="resources/testhelper.js"></script> |
| <body> |
| <div id="log"> |
| <script> |
| 'use strict'; |
| |
| test(() => { |
| const result = new CSSMathInvert(new CSSUnitValue(0, 'number')); |
| assert_numeric_type_equals(result.type(), { }); |
| }, 'Inverting a type with empty map returns the empty map'); |
| |
| test(() => { |
| const x = new CSSMathProduct(new CSSUnitValue(0, 'px'), new CSSUnitValue(0, 's')); |
| const result = new CSSMathInvert(x); |
| assert_numeric_type_equals(result.type(), { length: -1, time: -1 }); |
| }, 'Inverting a type negates all its exponents'); |
| |
| test(() => { |
| const x = new CSSUnitValue(0, 'px'); |
| const result = new CSSMathInvert(new CSSMathInvert(x)); |
| assert_numeric_type_equals(result.type(), { length: 1 }); |
| }, 'Inverting an inverted type returns the original type'); |
| |
| </script> |
