| <!doctype html> |
| <meta charset="utf-8"> |
| <title>CSSPositionValue Error Handling</title> |
| <link rel="help" href="https://drafts.css-houdini.org/css-typed-om-1/#positionvalue-objects"> |
| <meta name="assert" content="Test CSSPositionValue constructor and attributes error handling" /> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <body> |
| <div id="log"> |
| <script> |
| 'use strict'; |
| |
| const gTestArguments = [ |
| { |
| description: 'a keyword', |
| value: 'auto', |
| }, |
| { |
| description: 'a double', |
| value: 3.14, |
| }, |
| { |
| description: 'a unitless zero', |
| value: 0, |
| }, |
| { |
| description: 'a string length', |
| value: '10px', |
| }, |
| { |
| description: 'a number CSSUnitValue', |
| value: CSS.number(10), |
| }, |
| { |
| description: 'a time CSSUnitValue', |
| value: CSS.s(10), |
| }, |
| { |
| description: 'a CSSMathValue of angle type', |
| value: new CSSMathSum(CSS.deg(1)), |
| }, |
| ]; |
| |
| for (const {value, description} of gTestArguments) { |
| test(() => { |
| assert_throws_js(TypeError, () => new CSSPositionValue(value, CSS.px(0))); |
| assert_throws_js(TypeError, () => new CSSPositionValue(CSS.px(0), value)); |
| }, `Constructing a CSSPositionValue with ${description} throws a TypeError`); |
| |
| test(() => { |
| let position = new CSSPositionValue(CSS.px(0), CSS.px(0)); |
| assert_throws_js(TypeError, () => position.x = value); |
| |
| assert_equals(position.x.value, 0, |
| 'X member should not have changed'); |
| }, `Updating CSSPositionValue.x with ${description} throws a TypeError`); |
| |
| test(() => { |
| let position = new CSSPositionValue(CSS.px(0), CSS.px(0)); |
| assert_throws_js(TypeError, () => position.y = value); |
| |
| assert_equals(position.y.value, 0, |
| 'Y member should not have changed'); |
| }, `Updating CSSPositionValue.y with ${description} throws a TypeError`); |
| } |
| |
| </script> |
