testing/web-platform/tests/conformance-checkers/html-aria/roles-properties-supported-inherited/columnheader-aria-expanded-undefined.html


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<!DOCTYPE html>
<html>
   <head>
      <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
      <title>&lt;div&gt; with role columnheader; inherited supported state or property "aria-expanded"
         value of "undefined"
      </title>
   </head>
   <body>
      <div role="grid">
        <div role="row">
          <span id="test" role="columnheader" aria-expanded="undefined">Placeholder content</span>
          <span role="columnheader">header 2</span>
          <span role="columnheader">header 3</span>
        </div>
        <div role="row">
          <span role="gridcell" id="obj1">obj1</span>
          <span role="gridcell">obj2</span>
          <span role="gridcell">obj3</span>
        </div>
        <div role="row">
          <span role="gridcell">obj1</span>
          <span role="gridcell">obj2</span>
          <span role="gridcell">obj3</span>
        </div>
        <div role="row">
          <span role="gridcell">obj1</span>
          <span role="gridcell">obj2</span>
          <span role="gridcell">obj3</span>
        </div>
      </div>
   </body>
</html>