1 files changed, 329 insertions, 0 deletions
diff --git a/testing/web-platform/tests/shadow-dom/declarative/declarative-shadow-dom-basic.html b/testing/web-platform/tests/shadow-dom/declarative/declarative-shadow-dom-basic.html
new file mode 100644
index 0000000000..8bc6bec5f5
--- /dev/null
+++ b/testing/web-platform/tests/shadow-dom/declarative/declarative-shadow-dom-basic.html
@@ -0,0 +1,329 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Declarative Shadow DOM</title>
+<link rel="author" href="mailto:masonf@chromium.org">
+<link rel="help" href="https://github.com/whatwg/dom/issues/831">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+
+<div id="host" style="display:none">
+  <template shadowrootmode="open">
+    <slot id="s1" name="slot1"></slot>
+  </template>
+  <div id="c1" slot="slot1"></div>
+</div>
+
+<script>
+test(() => {
+  const host = document.querySelector('#host');
+  const c1 = host.querySelector('#c1');
+  assert_true(!!c1);
+  assert_equals(host.querySelector('#s1'), null, "Should be inside shadow root");
+  assert_equals(host.querySelector('template'), null, "No leftover template node");
+  assert_true(!!host.shadowRoot,"No shadow root found");
+  const s1 = host.shadowRoot.querySelector('#s1');
+  assert_equals(c1.assignedSlot, s1);
+  assert_array_equals(s1.assignedNodes(), [c1]);
+}, 'Declarative Shadow DOM: Basic test');
+
+test(() => {
+  assert_true(HTMLTemplateElement.prototype.hasOwnProperty("shadowRootMode"),'Unable to feature detect');
+}, 'Declarative Shadow DOM: Feature detection');
+
+test(() => {
+  const t = document.createElement('template');
+  t.setAttribute('shadowrootmode','open');
+  assert_equals(t.shadowRootMode,'open','The shadowRootMode IDL should reflect the content attribute');
+  t.setAttribute('shadowrootmode','closed');
+  assert_equals(t.shadowRootMode,'closed','"open" and "closed" should both be valid values');
+  t.setAttribute('shadowrootmode','OpEn');
+  assert_equals(t.shadowRootMode,'open','Case insensitive');
+  t.setAttribute('shadowrootmode','INVALID');
+  assert_equals(t.shadowRootMode,'','Invalid values map to empty string');
+  t.removeAttribute('shadowrootmode');
+  assert_equals(t.shadowRootMode,'','No shadowrootmode attribute maps to empty string');
+}, 'Shadowrootmode reflection');
+
+test(() => {
+  const t = document.createElement('template');
+  t.shadowRootMode = 'blah';
+  assert_equals(t.shadowRootMode, '');
+  t.getAttribute('shadowrootmode', 'blah');
+  t.shadowRootMode = 'CLOSED';
+  assert_equals(t.shadowRootMode, 'closed');
+  t.getAttribute('shadowrootmode', 'CLOSED');
+}, 'Shadowrootmode reflection, setter');
+
+test(() => {
+  const div = document.createElement('div');
+  div.setHTMLUnsafe(`
+    <div id="host">
+      <template shadowrootmode="open">
+        <slot id="s1" name="slot1"></slot>
+      </template>
+      <div id="c1" slot="slot1"></div>
+    </div>
+    `);
+  const host = div.querySelector('#host');
+  const c1 = host.querySelector('#c1');
+  assert_true(!!c1);
+  assert_equals(host.querySelector('#s1'), null, "Should be inside shadow root");
+  assert_equals(host.querySelector('template'), null, "No leftover template node");
+  assert_true(!!host.shadowRoot,"No shadow root found");
+  const s1 = host.shadowRoot.querySelector('#s1');
+  assert_equals(c1.assignedSlot, s1);
+  assert_array_equals(s1.assignedNodes(), [c1]);
+}, 'Declarative Shadow DOM: Fragment parser basic test');
+
+test(() => {
+  const div = document.createElement('div');
+  div.setHTMLUnsafe(`
+    <div id="host">
+      <template shadowrootmode="invalid">
+      </template>
+    </div>
+    `);
+  const host = div.querySelector('#host');
+  assert_equals(host.shadowRoot, null, "Shadow root was found");
+  const tmpl = host.querySelector('template');
+  assert_true(!!tmpl,"Template should still be present");
+  const shadowrootAttr = tmpl.getAttribute('shadowrootmode');
+  assert_equals(shadowrootAttr,"invalid","'shadowrootmode' attribute should still be present");
+}, 'Declarative Shadow DOM: Invalid shadow root attribute');
+
+test(() => {
+  const div = document.createElement('div');
+  div.setHTMLUnsafe(`
+    <div id="host">
+      <template shadowrootmode="closed">
+      </template>
+    </div>
+    `);
+  const host = div.querySelector('#host');
+  assert_equals(host.shadowRoot, null, "Closed shadow root");
+  assert_equals(host.querySelector('template'), null, "No template - converted to shadow root");
+}, 'Declarative Shadow DOM: Closed shadow root attribute');
+
+test(() => {
+  const div = document.createElement('div');
+  div.setHTMLUnsafe(`
+    <div id="host">
+      <template shadowrootmode="open">
+        <slot id="s1" name="slot1"></slot>
+    </div>
+    `);
+  const host = div.querySelector('#host');
+  assert_equals(host.querySelector('#s1'), null, "Should be inside shadow root");
+  assert_equals(host.querySelector('template'), null, "No leftover template node");
+  assert_true(!!host.shadowRoot,"No shadow root found");
+  const s1 = host.shadowRoot.querySelector('#s1');
+  assert_true(!!s1,"Slot should be inside the shadow root");
+}, 'Declarative Shadow DOM: Missing closing tag');
+
+test(() => {
+  const div = document.createElement('div');
+  div.setHTMLUnsafe(`
+    <div id="host">
+      <template shadowrootmode="open" shadowrootdelegatesfocus>
+      </template>
+    </div>
+    `);
+  var host = div.querySelector('#host');
+  assert_true(!!host.shadowRoot,"No shadow root found");
+  assert_true(host.shadowRoot.delegatesFocus,"delegatesFocus should be true");
+  div.setHTMLUnsafe(`
+    <div id="host">
+      <template shadowrootmode="open">
+      </template>
+    </div>
+    `);
+  host = div.querySelector('#host');
+  assert_true(!!host.shadowRoot,"No shadow root found");
+  assert_false(host.shadowRoot.delegatesFocus,"delegatesFocus should be false without the shadowrootdelegatesfocus attribute");
+}, 'Declarative Shadow DOM: delegates focus attribute');
+
+test(() => {
+  const div = document.createElement('div');
+  div.setHTMLUnsafe(`
+    <div id="host">
+      <template shadowrootmode="open" shadowrootclonable>
+      </template>
+    </div>
+    `);
+  var host = div.querySelector('#host');
+  assert_true(!!host.shadowRoot,"No shadow root found");
+  assert_true(host.shadowRoot.clonable,"clonable should be true");
+  div.setHTMLUnsafe(`
+    <div id="host">
+      <template shadowrootmode="open">
+      </template>
+    </div>
+    `);
+  host = div.querySelector('#host');
+  assert_true(!!host.shadowRoot,"No shadow root found");
+  assert_false(host.shadowRoot.clonable,"clonable should be false without the shadowrootclonable attribute");
+}, 'Declarative Shadow DOM: clonable attribute');
+</script>
+
+<div id="multi-host" style="display:none">
+  <template shadowrootmode="open">
+    <span>root 1</span>
+  </template>
+  <template shadowrootmode="closed">
+    <span>root 2</span>
+  </template>
+</div>
+<script>
+test(() => {
+  const host = document.querySelector('#multi-host');
+  const leftover = host.querySelector('template');
+  assert_true(!!leftover, "The second (duplicate) template should be left in the DOM");
+  assert_true(leftover instanceof HTMLTemplateElement);
+  assert_equals(leftover.getAttribute('shadowrootmode'),"closed");
+  assert_equals(leftover.shadowRootMode,"closed");
+  assert_true(!!host.shadowRoot,"No open shadow root found - first root should remain");
+  const innerSpan = host.shadowRoot.querySelector('span');
+  assert_equals(innerSpan.textContent, 'root 1', "Content should come from first declarative shadow root");
+}, 'Declarative Shadow DOM: Multiple roots');
+
+</script>
+
+<template id="template-containing-shadow">
+  <div class="innerdiv">
+    <template shadowrootmode=open shadowrootclonable>Content</template>
+  </div>
+</template>
+<script>
+test(() => {
+  const template = document.querySelector('#template-containing-shadow');
+  const container1 = document.createElement('div');
+  container1.style.display = 'none';
+  document.body.appendChild(container1);
+  container1.appendChild(template.content.cloneNode(true));
+  let innerDiv = container1.querySelector('div.innerdiv');
+  const shadowRoot1 = innerDiv.shadowRoot;
+  assert_true(!!shadowRoot1,"Inner div should have a shadow root");
+  assert_equals(innerDiv.querySelector('template'), null, "No leftover template node");
+
+  const container2 = document.createElement('div');
+  container2.style.display = 'none';
+  document.body.appendChild(container2);
+  container2.appendChild(template.content.cloneNode(true));
+  innerDiv = container2.querySelector('div.innerdiv');
+  const shadowRoot2 = innerDiv.shadowRoot;
+  assert_true(!!shadowRoot2,"Inner div should have a shadow root");
+  assert_equals(innerDiv.querySelector('template'), null, "No leftover template node");
+
+  assert_not_equals(shadowRoot1,shadowRoot2,'Should not get back the same shadow root');
+
+  // Make sure importNode also works.
+  const container3 = document.createElement('div');
+  container3.style.display = 'none';
+  document.body.appendChild(container3);
+  container3.appendChild(document.importNode(template.content,true));
+  innerDiv = container3.querySelector('div.innerdiv');
+  const shadowRoot3 = innerDiv.shadowRoot;
+  assert_true(!!shadowRoot3,"Inner div should have a shadow root");
+  assert_equals(innerDiv.querySelector('template'), null, "No leftover template node");
+  assert_not_equals(shadowRoot1,shadowRoot3,'Should not get back the same shadow root');
+
+}, 'Declarative Shadow DOM: template containing declarative shadow root (with shadowrootclonable)');
+</script>
+
+<template id="template-containing-deep-shadow">
+  <div><div><div><div><div>
+    <div class="innerdiv">
+      <template shadowrootmode=open shadowrootclonable>Content</template>
+    </div>
+  </div></div></div></div></div>
+</template>
+<script>
+test(() => {
+  const template = document.querySelector('#template-containing-deep-shadow');
+  const host = document.createElement('div');
+  host.style.display = 'none';
+  document.body.appendChild(host);
+  host.appendChild(template.content.cloneNode(true));
+  assert_true(!!host.querySelector('div.innerdiv').shadowRoot,"Inner div should have a shadow root");
+}, 'Declarative Shadow DOM: template containing (deeply nested) declarative shadow root');
+</script>
+
+<template id="template-containing-template">
+  <div>
+    <template id="inner-template">
+      <div class="innerdiv">
+        <template shadowrootmode=open shadowrootclonable>Content</template>
+      </div>
+    </template>
+  </div>
+</template>
+<script>
+test(() => {
+  const template = document.querySelector('#template-containing-template');
+  const host = document.createElement('div');
+  host.style.display = 'none';
+  document.body.appendChild(host);
+  host.appendChild(template.content.cloneNode(true));
+  const innerTemplate = host.querySelector('#inner-template');
+  assert_true(!!innerTemplate.content.querySelector('div.innerdiv').shadowRoot,"Inner div should have a shadow root");
+}, 'Declarative Shadow DOM: template containing a template containing declarative shadow root');
+</script>
+
+<template id="template-containing-ua-shadow">
+  <div class="innerdiv">
+    <template shadowrootmode=open shadowrootclonable>
+      <video></video> <!--Assumed to have UA shadow root-->
+    </template>
+  </div>
+</template>
+<script>
+test(() => {
+  const template = document.querySelector('#template-containing-ua-shadow');
+  const host = document.createElement('div');
+  host.style.display = 'none';
+  document.body.appendChild(host);
+  // Mostly make sure clone of template *does* clone the
+  // shadow root, and doesn't crash on cloning the <video>.
+  host.appendChild(template.content.cloneNode(true));
+  let innerDiv = host.querySelector('div.innerdiv');
+  const shadowRoot = innerDiv.shadowRoot;
+  assert_true(!!shadowRoot,"Inner div should have a shadow root");
+  assert_equals(innerDiv.querySelector('template'), null, "No leftover template node");
+  assert_true(!!innerDiv.shadowRoot.querySelector('video'),'Video element should be present');
+}, 'Declarative Shadow DOM: template containing declarative shadow root and UA shadow root');
+</script>
+
+<template id="template-containing-ua-shadow-closed">
+  <div class="innerdiv">
+    <template shadowrootmode=closed>
+      <video></video> <!--Assumed to have UA shadow root-->
+    </template>
+  </div>
+</template>
+<script>
+test(() => {
+  const template = document.querySelector('#template-containing-ua-shadow-closed');
+  const host = document.createElement('div');
+  host.style.display = 'none';
+  document.body.appendChild(host);
+  host.appendChild(template.content.cloneNode(true));
+  let innerDiv = host.querySelector('div.innerdiv');
+  assert_true(!innerDiv.shadowRoot,"Inner div should have a closed shadow root");
+}, 'Declarative Shadow DOM: template containing closed declarative shadow root and UA shadow root');
+</script>
+
+<template id="root-element-shadow">
+    <template shadowrootmode=open>Content</template>
+</template>
+<script>
+test(() => {
+  // Root element of this template is a <template shadowroot>:
+  const template = document.querySelector('#root-element-shadow');
+  const host = document.createElement('div');
+  host.appendChild(template.content.cloneNode(true));
+  assert_equals(host.shadowRoot, null, "Shadow root should not be present");
+  const tmpl = host.querySelector('template');
+  assert_true(!!tmpl,"Template should still be present");
+  assert_equals(tmpl.getAttribute('shadowrootmode'),"open","'shadowrootmode' attribute should still be present");
+}, 'Declarative Shadow DOM: template root element');
+</script>