| <!doctype html> |
| <meta charset="utf-8"> |
| <title>CSSVariableReferenceValue Error Handling</title> |
| <link rel="help" href="https://drafts.css-houdini.org/css-typed-om-1/#cssvariablereferencevalue"> |
| <meta name="assert" content="Test CSSVariableReferenceValue constructor and attributes error handling" /> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <body> |
| <div id="log"> |
| <script> |
| 'use strict'; |
| |
| test(() => { |
| assert_throws(new TypeError(), () => new CSSVariableReferenceValue('')); |
| }, 'Constructing a CSSVariableReferenceValue with an empty variable name ' + |
| 'throws a TypeError'); |
| |
| test(() => { |
| assert_throws(new TypeError(), () => new CSSVariableReferenceValue('bar')); |
| }, 'Constructing a CSSVariableReferenceValue with an invalid variable name ' + |
| 'throws SyntaxError'); |
| |
| test(() => { |
| let result = new CSSVariableReferenceValue('--foo'); |
| assert_throws(new TypeError(), () => result.variable = ''); |
| |
| assert_equals(result.variable, '--foo', |
| 'Variable member should not have changed'); |
| }, 'Updating CSSVariableReferenceValue.variable to an empty variable name ' + |
| 'throws TypeError'); |
| |
| test(() => { |
| let result = new CSSVariableReferenceValue('--foo'); |
| assert_throws(new TypeError(), () => result.variable = 'bar'); |
| |
| assert_equals(result.variable, '--foo', |
| 'Variable member should not have changed'); |
| }, 'Updating CSSVariableReferenceValue.variable to an invalid variable name ' + |
| 'throws TypeError'); |
| |
| </script> |
