css/cssom/getComputedStyle-insets-relpos-inline.html

<!doctype html>
<title>getComputedStyle OOF inset resolved against relpos inline container</title>
<link rel="help" href="https://drafts.csswg.org/cssom/#resolved-value">
<link rel="author" href="mailto:xiaochengh@chromium.org">
<link rel="stylesheet" href="/fonts/ahem.css">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>

<style>
.ifc {
  position: relative;
  width: max-content;
  font: 20px/1 Ahem;
  margin-bottom: 2em;
}

.relpos {
  position: relative;
  background: yellow;
  color: yellow;
}

.target {
  position: absolute;
  background: green;
  width: 5em;
  height: 1em;
  top: 1em;
}

.fix-start {
  inset-inline-start: 0;
}

.fix-end {
  inset-inline-end: 0;
}
</style>

<div class="ifc">
  Lorem
  <span class="relpos">
    ipsum dolor
    <div class="target fix-start" id="target1"></div>
    <div class="target fix-end" id="target2"></div>
  </span>
  sit amet
</div>

<div class="ifc">
  Lorem
  <span class="relpos" dir="rtl">
    ipsum dolor
    <div class="target fix-start" id="target3" dir="ltr"></div>
    <div class="target fix-end" id="target4" dir="ltr"></div>
  </span>
  sit amet
</div>
<script>
setup({ explicit_done: true });

document.fonts.ready.then(() => {
  test(() => {
    let style = getComputedStyle(target1);
    assert_equals(style.left, '0px');
    assert_equals(style.right, '140px');
  }, 'OOF with left fixed right auto in relpos inline container');

  test(() => {
    let style = getComputedStyle(target2);
    assert_equals(style.left, '140px');
    assert_equals(style.right, '0px');
  }, 'OOF with left auto right fixed in relpos inline container');

  test(() => {
    let style = getComputedStyle(target3);
    assert_equals(style.left, '0px');
    assert_equals(style.right, '140px');
  }, 'OOF with left fixed right auto in relpos inline container with mixed directions');

  test(() => {
    let style = getComputedStyle(target4);
    assert_equals(style.left, '140px');
    assert_equals(style.right, '0px');
  }, 'OOF with left auto right fixed in relpos inline container with mixed directions');

  done();
});
</script>