<span id="false-str" attr="false" />
<span id="true-str" attr="true" />
<span id="true" attr={true} />
<span id="false" attr={false} />
<span id="empty" attr="" />
<span id="null" attr={null} />
<span id="undefined" attr={undefined} />
<!--
    Per HTML spec, some attributes should be treated as booleans
    These should always render <span async /> or <span /> (without a string value)
-->
<span id='html-boolean' async />
<span id='html-boolean-true' async={true} />
<span id='html-boolean-false' async={false} />
<!--
    Other attributes should be treated as string enums
    These should always render <span draggable="true" /> or <span draggable="false" />
-->
<span id='html-enum' draggable='true' />
<span id='html-enum-true' draggable={true} />
<span id='html-enum-false' draggable={false} />