source-order-invalid.html

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This WPT test may be referenced by the following Test IDs:
- /shadow-dom/focus-navigation/reading-flow/tentative/source-order-invalid.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<meta charset="utf-8">

<meta name="timeout" content="long">

<title>CSS Display: reading-flow with value source-order should not work</title>

<link rel="help" href="https://drafts.csswg.org/css-display-4/#reading-flow">

<link rel="author" title="Di Zhang" href="mailto:dizhangg@chromium.org">

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

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

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

<script src="/resources/testdriver-vendor.js"></script>

<script src="/resources/testdriver-actions.js"></script>

<script src='../../resources/shadow-dom.js'></script>

<script src="../../resources/focus-utils.js"></script>

<style>

.wrapper {

  display: inline;

  reading-flow: source-order;

</style>

<div class="test-case" data-expect="a,b,c"

      data-description="Inline elements. Focus should be in DOM tabindexed-order.">

  <div class="wrapper">

    <button id="a" style="reading-order: 1">Item A</button>

    <button id="b" style="reading-order: -1">Item B</button>

    <button id="c" style="reading-order: 0">Item C</button>

  </div>

</div>

<script>

runFocusTestCases();

</script>