declarative-shadow-dom-repeats-2.html

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This WPT test may be referenced by the following Test IDs:
- /shadow-dom/declarative/declarative-shadow-dom-repeats-2.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<title>Duplicate declarative shadow trees</title>

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

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

<div id=multiple1>

  <template shadowrootmode=open>1</template>

  <template shadowrootmode=open>2</template>

  <template shadowrootmode=open>3</template>

</div>

<div id=multiple2>

  <template shadowrootmode=closed>1</template>

  <template shadowrootmode=closed>2</template>

  <template shadowrootmode=open>3</template>

</div>

<script>

test((t) => {

  t.add_cleanup(() => {

    multiple1.remove();

    multiple2.remove();

});

  let shadow = multiple1.shadowRoot;

  assert_true(!!shadow,'Remaining shadow root should be open');

  assert_equals(shadow.textContent,"1");

  assert_equals(multiple1.childElementCount, 2);

  assert_equals(multiple1.firstElementChild.content.textContent, "2");

  assert_equals(multiple1.lastElementChild.content.textContent, "3");

  shadow = multiple2.shadowRoot;

  assert_false(!!shadow,'Remaining shadow root should be closed');

  assert_equals(multiple2.childElementCount, 2);

  assert_equals(multiple2.firstElementChild.content.textContent, "2");

  assert_equals(multiple2.lastElementChild.content.textContent, "3");

},'Repeated declarative shadow roots keep only the first');

</script>