File: fieldset-content-before-legend.html

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<!doctype html>
<title>fieldset content before legend</title>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<style>
fieldset {
  /* Paddings might have fractional values by default, and they can cause
     rounding differences between the test element and the reference element. */
  padding: 0;
}
</style>

<fieldset id=test>
  X
  <legend>legend</legend>
  Y
</fieldset>
<fieldset id=ref>
  <legend>legend</legend>
  X Y
</fieldset>

<fieldset id="test2">
  P<span id="hidden" style="display:none;">AS</span><legend>legend</legend>S
</fieldset>

<script>
  test(() => {
    const testElm = document.getElementById('test');
    const refElm = document.getElementById('ref');
    assert_equals(testElm.clientHeight, refElm.clientHeight);
  });

  test(() => {
    const testElm = document.getElementById('test2');
    testElm.clientHeight;
    const span = document.getElementById('hidden');
    span.style.display = 'inline';
    testElm.clientHeight;
  }, 'Showing a node just before the rendered legend should not crash');
</script>