Element-setAttribute-crbug-1138487.html

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This WPT test may be referenced by the following Test IDs:
- /dom/nodes/Element-setAttribute-crbug-1138487.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

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

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

<script>

// Regression test for crbug.com/1138487.

//

// It was possible for a non-ASCII-lowercase string to be used when inserting

// into the attribute collection if a hashtable encountered it during probing

// while looking for the ASCII-lowercase equivalent.

//

// This caused such a string to be illegally used as an attribute name, thus

// causing inconsistent behavior in future attribute lookup.

test(() => {

  const el = document.createElement('div');

  el.setAttribute('labelXQL', 'abc');

  el.setAttribute('_valueXQL', 'def');

  assert_equals(el.getAttribute('labelXQL'), 'abc');

  assert_equals(el.getAttribute('labelxql'), 'abc');

  assert_equals(el.getAttribute('_valueXQL'), 'def');

  assert_equals(el.getAttribute('_valuexql'), 'def');

}, "Attributes first seen in mixed ASCII case should not be corrupted.");

</script>