cssUnparsedValue-length.html

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This test has a WPT meta file that expects 4 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /css/css-typed-om/stylevalue-subclasses/cssUnparsedValue-length.html - WPT Dashboard Interop Dashboard

<!doctype html>

<meta charset="utf-8">

<title>CSSUnparsedValue.length</title>

<link rel="help" href="https://drafts.css-houdini.org/css-typed-om-1/#dom-cssunparsedvalue-length">

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<body>

<div id="log"></div>

<script>

'use strict';

test(() => {

  const result = new CSSUnparsedValue([]);

  assert_equals(result.length, 0, 'length');

}, 'Length of CSSUnparsedValue with no fragments is zero');

test(() => {

  const result = new CSSUnparsedValue([

    ' ', new CSSVariableReferenceValue('--A')

]);

  assert_equals(result.length, 2, 'length');

}, 'Length of CSSUnparsedValue with multiple fragments is the number of ' +

   'fragments');

test(() => {

  let result = new CSSUnparsedValue([' ']);

  assert_equals(result.length, 1, 'initial length');

  result[1] = new CSSVariableReferenceValue('--A');

  assert_equals(result.length, 2, 'length after appending once');

  result[2] = 'lemon';

  assert_equals(result.length, 3, 'length after appending twice');

}, 'Length of CSSUnparsedValue updates when fragments are appended');

test(() => {

  let result = new CSSUnparsedValue([' ']);

  assert_equals(result.length, 1, 'initial length');

  result[0] = new CSSVariableReferenceValue('--A');

  assert_equals(result.length, 1, 'length after modification');

  result[0] = 'lemon';

  assert_equals(result.length, 1, 'length after modification');

}, 'Length of CSSUnparsedValue does not change when fragments are modified');

</script>