| <!doctype html> |
| <meta charset="utf-8"> |
| <title>CSSVariableReferenceValue tests</title> |
| <link rel="help" href="https://drafts.css-houdini.org/css-typed-om-1/#cssvariablereferencevalue"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="../resources/testhelper.js"></script> |
| <script> |
| 'use strict'; |
| |
| test(() => { |
| assert_throws(new SyntaxError(), () => new CSSVariableReferenceValue('bar')); |
| assert_throws(new SyntaxError(), () => new CSSVariableReferenceValue('')); |
| }, 'Constructing a CSSVariableReferenceValue with an invalid variable name throws SyntaxError'); |
| |
| test(() => { |
| let result = new CSSVariableReferenceValue('--foo'); |
| assert_throws(new SyntaxError(), () => result.variable = 'bar'); |
| assert_equals(result.variable, '--foo'); |
| assert_throws(new SyntaxError(), () => result.variable = ''); |
| assert_equals(result.variable, '--foo'); |
| }, 'Updating CSSVariableReferenceValue.variable to an invalid variable name throws SyntaxError'); |
| |
| test(() => { |
| const result = new CSSVariableReferenceValue('--foo'); |
| assert_equals(result.variable, '--foo'); |
| assert_equals(result.fallback, null); |
| }, 'CSSVariableReferenceValue can be constructed with no fallback'); |
| |
| test(() => { |
| const result = new CSSVariableReferenceValue('--foo', new CSSUnparsedValue('lemon')); |
| assert_equals(result.variable, '--foo'); |
| assert_style_value_equals(result.fallback, new CSSUnparsedValue('lemon')); |
| }, 'CSSVariableReferenceValue can be constructed with fallback'); |
| |
| test(() => { |
| let result = new CSSVariableReferenceValue('--foo'); |
| result.variable = '--bar'; |
| assert_equals(result.variable, '--bar'); |
| }, 'CSSVariableReferenceValue.variable can updated to a valid variable name'); |
| |
| </script> |
