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<meta charset="utf-8">
<title>StylePropertyMap.append tests</title>
<link rel="help" href="https://drafts.css-houdini.org/css-typed-om-1/#append-to-a-stylepropertymap">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="../../resources/testhelper.js"></script>
<body>
<script>
'use strict';

const gInvalidTestCases = [
  { property: 'lemon', values: ['ade'], desc: 'an unsupported property name' },
  { property: null, values: ['foo'], desc: 'an null property name' },
  { property: 'width', values: ['10px'], desc: 'a property that is not list valued' },
  { property: 'margin', values: ['10px'], desc: 'a shorthand property' },
  { property: 'transition-duration', values: [CSS.px(10)], desc: 'an invalid CSSStyleValue' },
  { property: 'transition-duration', values: ['10px'], desc: 'an invalid String value' },
  { property: 'transition-duration', values: [CSS.s(1), '10px', CSS.px(10)], desc: 'a mix of valid and invalid values' },
  { property: 'transition-duration', values: [new CSSUnparsedValue([])], desc: 'a CSSUnparsedValue' },
  { property: 'transition-duration', values: ['var(--A)'], desc: 'a var ref' },
];

for (const {property, values, desc} of gInvalidTestCases) {
  test(t => {
    let styleMap = createDeclaredStyleMap(t, '');
    assert_throws_js(TypeError, () => styleMap.append(property, ...values));
  }, 'Calling StylePropertyMap.append with ' + desc + ' throws TypeError');
}

test(t => {
  let styleMap = createDeclaredStyleMap(t, '');

  styleMap.append('transition-duration', CSS.s(1), '2s');
  assert_style_value_array_equals(styleMap.getAll('transition-duration'),
      [CSS.s(1), CSS.s(2)]);

  styleMap.append('transition-duration', '3s', CSS.s(4));
  assert_style_value_array_equals(styleMap.getAll('transition-duration'),
      [CSS.s(1), CSS.s(2), CSS.s(3), CSS.s(4)]);
}, 'Appending a list-valued property with CSSStyleValue or String updates its values');

test(t => {
  let styleMap = createDeclaredStyleMap(t, '');

  styleMap.append('transition-duration', '1s, 2s');
  assert_style_value_array_equals(styleMap.getAll('transition-duration'),
      [CSS.s(1), CSS.s(2)]);

  styleMap.append('transition-duration', '3s, 4s');
  assert_style_value_array_equals(styleMap.getAll('transition-duration'),
      [CSS.s(1), CSS.s(2), CSS.s(3), CSS.s(4)]);
}, 'Appending a list-valued property with list-valued string updates its values');

test(t => {
  let styleMap = createDeclaredStyleMap(t, 'transition-duration: 5s, 10s');

  styleMap.append('tRaNsItIoN-dUrAtIoN', '1s', CSS.s(2));
  const result = styleMap.getAll('transition-duration');
  assert_style_value_array_equals(result,
      [CSS.s(5), CSS.s(10), CSS.s(1), CSS.s(2)]);
}, 'StylePropertyMap.append is case-insensitive');

test(t => {
  let styleMap = createDeclaredStyleMap(t, 'transition-duration: var(--a)');
  assert_throws_js(TypeError, () => styleMap.append('transition-duration', CSS.s(1)));
}, 'Appending to a list containing a variable reference should throw');

test(t => {
  let styleMap = createDeclaredStyleMap(t, 'transition: var(--a)');
  assert_throws_js(TypeError, () => styleMap.append('transition-duration', CSS.s(1)));
}, 'Appending to a longhand list containing a variable reference should throw');

</script>
