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 <p>Tests the shadow DOM slots portions of the AccName <em>Name Computation</em> algorithm, coming in <a href="https://github.com/w3c/accname/pull/167">ARIA #167</a>.</p>

<label id="label1">
  <div id="host1">slotted</div>
</label>
<button id="labelled1"
        class="labelled"
        type="button"
        aria-labelledby="label1"
        data-expectedlabel="foo slotted bar"
        data-testname="aria-labelledby reference to element with slotted text content"></button>

<label id="label2">
  <div id="host2"></div>
</label>
<button id="labelled2"
        class="labelled"
        type="button"
        aria-labelledby="label2"
        data-expectedlabel="foo default bar"
        data-testname="aria-labelledby reference to element with default slotted text content"></button>

<label id="label3">
  <div id="host3">slotted</div>
</label>
<button id="labelled3"
        class="labelled"
        type="button"
        aria-labelledby="label3"
        data-expectedlabel="foo slotted bar"
        data-testname="aria-labelledby reference to element with slotted text content and aria-label on slot"></button>

<label id="label4">
  <div id="host4"></div>
</label>
<button id="labelled4"
        class="labelled"
        type="button"
        aria-labelledby="label4"
        data-expectedlabel="foo default bar"
        data-testname="aria-labelledby reference to element with default slotted text content and aria-label on slot"></button>

<script>

document.getElementById('host1').attachShadow({ mode: 'open' }).innerHTML = 'foo <slot></slot> bar';
document.getElementById('host2').attachShadow({ mode: 'open' }).innerHTML = 'foo <slot>default</slot> bar';
document.getElementById('host3').attachShadow({ mode: 'open' }).innerHTML = 'foo <slot aria-label="label"></slot> bar';
document.getElementById('host4').attachShadow({ mode: 'open' }).innerHTML = 'foo <slot aria-label="label">default</slot> bar';

AriaUtils.verifyLabelsBySelector('.labelled');

</script>
