File: align-content-block-display-coverage.html

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<!DOCTYPE html>
<link rel="help" href="https://drafts.csswg.org/css-align/#distribution-block">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>

<style>
@import "/fonts/ahem.css";
body {
  font: 10px/1 Ahem;
  margin: 0;
}
.target {
  height: 50px;
  align-content: unsafe center;
}
</style>

<div class="target">
  <div class="content">foo</div>
</div>

<script>
const supportedValues = ['block', 'flow', 'flow-root', 'inline-block',
                         'list-item', 'flow-root list-item', 'table-caption'];
const unsupportedValues = ['ruby-text'];

const target = document.querySelector('.target');
const content = document.querySelector('.content');
for (let value of supportedValues) {
  test(() => {
    target.style.display = value;
    assert_equals(content.offsetTop, 20);
  }, `display:${value} should support align-content`);
}

for (let value of unsupportedValues) {
  test(() => {
    target.style.display = value;
    assert_not_equals(content.offsetTop, 20);
  }, `display:${value} should not support align-content`);
}
</script>