select-appearance-native-computed-style.html

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This WPT test may be referenced by the following Test IDs:
- /css/css-writing-modes/forms/select-appearance-native-computed-style.html - WPT Dashboard Interop Dashboard

<!doctype html>

<link rel="author" title="Aditya Keerthi" href="https://github.com/pxlcoder">

<link rel="help" href="https://html.spec.whatwg.org/#the-select-element">

<link rel="help" href="https://drafts.csswg.org/css-writing-modes/#block-flow">

<title>Select appearance native writing mode computed style</title>

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

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

<select style="writing-mode: horizontal-tb">

    <option>Option 1</option>

    <option>Option 2</option>

    <option>Option 3</option>

    <option>Option 4</option>

    <option>Option 5</option>

</select>

<select style="writing-mode: vertical-lr">

    <option>Option 1</option>

    <option>Option 2</option>

    <option>Option 3</option>

    <option>Option 4</option>

    <option>Option 5</option>

</select>

<select style="writing-mode: vertical-rl">

    <option>Option 1</option>

    <option>Option 2</option>

    <option>Option 3</option>

    <option>Option 4</option>

    <option>Option 5</option>

</select>

<script>

test(() => {

  const select = document.querySelector(`select[style="writing-mode: horizontal-tb"]`);

  const style = getComputedStyle(select);

  const blockSize = parseInt(style.blockSize, 10);

  const inlineSize = parseInt(style.inlineSize, 10);

  assert_not_equals(blockSize, 0);

  assert_not_equals(inlineSize, 0);

  assert_greater_than(inlineSize, blockSize);

  assert_equals(style.blockSize, style.height);

  assert_equals(style.inlineSize, style.width);

}, `select[style="writing-mode: horizontal-tb"] block size should match height and inline size should match width`);

for (const writingMode of ["vertical-lr", "vertical-rl"]) {

  test(() => {

    const select = document.querySelector(`select[style="writing-mode: ${writingMode}"]`);

    const style = getComputedStyle(select);

    const blockSize = parseInt(style.blockSize, 10);

    const inlineSize = parseInt(style.inlineSize, 10);

    assert_not_equals(blockSize, 0);

    assert_not_equals(inlineSize, 0);

    assert_greater_than(inlineSize, blockSize);

    assert_equals(style.blockSize, style.width);

    assert_equals(style.inlineSize, style.height);

  }, `select[style="writing-mode: ${writingMode}"] block size should match width and inline size should match height`);

};

</script>