slots-fallback-in-document.html

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This WPT test may be referenced by the following Test IDs:
- /shadow-dom/slots-fallback-in-document.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<title>Shadow DOM: Slots and fallback contents in Document tree</title>

<meta name="author" title="Takayoshi Kochi" href="mailto:kochi@google.com">

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

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

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

<div id="test1">

  <div id="host">

    <template data-mode="open">

      <slot id="innerSlot"></slot>

    </template>

    <slot id="slot"><div id="fallback">This is fallback content</div></slot>

  </div>

</div>

<script>

'use strict';

let n1 = createTestTree(test1);

removeWhiteSpaceOnlyTextNodes(n1.test1);

test(() => {

  assert_array_equals(n1.innerSlot.assignedNodes(), [n1.slot]);

  assert_array_equals(n1.innerSlot.assignedNodes({ flatten: true }), [n1.slot]);

}, 'Children of a slot in a document tree should not be counted in flattened ' +

   'assigned nodes.');

</script>

<div id="test2">

  <div id="host">

    <template data-mode="open">

      <div id="innerHost">

        <template data-mode="open">

          <slot id="innerSlot"></slot>

        </template>

        <slot id="slot"><div id="fallback">This is fallback content</div></slot>

      </div>

    </template>

  </div>

</div>

<script>

'use strict';

let n2 = createTestTree(test2);

removeWhiteSpaceOnlyTextNodes(n2.test2);

test(() => {

  assert_array_equals(n2.innerSlot.assignedNodes(), [n2.slot]);

  assert_array_equals(n2.innerSlot.assignedNodes({ flatten: true }),

                      [n2.fallback]);

}, 'Slot fallback content in shadow tree should be counted in flattened ' +

   'assigned nodes.');

</script>