Bug 1888532 [wpt PR 45415] - Add a test of the ordering of getHTML se…

…rialization, a=testonly Automatic update from web-platform-tests Add a test of the ordering of getHTML serialization This adds a test to verify that the serialized version of a shadow root: 1. has the `<template shadowroot>` first, before any children, regardless of where the initial DSD content put them. 2. has the various shadowroot* attributes in a well defined order, again regardless of where the initial DSD put them. This came from a comment on the spec PR, here: whatwg/html#10139 (comment) (Note that Github currently doesn't properly handle links to "Resolved" conversations, and the above conversation is resolved. So I guess trust me that the request was to add testing for this case!) Bug: 41490936 Change-Id: I7866b61b768f645d61142a1fd4a9490ee0732dc2 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5405665 Reviewed-by: David Baron <[email protected]> Commit-Queue: Mason Freed <[email protected]> Auto-Submit: Mason Freed <[email protected]> Cr-Commit-Position: refs/heads/main@{#1279973} -- wpt-commits: 6a072aeb9fcbaa56cab5e168cba7b706268c4d05 wpt-pr: 45415
mozilla · Apr 10, 2024 · 4b9fa3e · 4b9fa3e
1 parent 40af884
commit 4b9fa3e
Showing 1 changed file with 69 additions and 0 deletions.
diff --git a/testing/web-platform/tests/shadow-dom/declarative/gethtml-ordering.html b/testing/web-platform/tests/shadow-dom/declarative/gethtml-ordering.html
@@ -0,0 +1,69 @@
+<!DOCTYPE html>
+<title>getHTML ordering behavior</title>
+<link rel='author' href='mailto:[email protected]'>
+<link rel='help' href='https://github.com/whatwg/html/pull/10139'>
+<script src='/resources/testharness.js'></script>
+<script src='/resources/testharnessreport.js'></script>
+
+
+<div id=tests>
+  <div data-name="base">
+    <template shadowrootmode=open shadowrootdelegatesfocus shadowrootserializable shadowrootclonable>
+      <slot></slot>
+    </template>
+    <span class=content>Content 1</span>
+    <span class=content>Content 2</span>
+  </div>
+
+  <div data-name="template position">
+    <span class=content>Content 1</span>
+    <template shadowrootmode=open shadowrootdelegatesfocus shadowrootserializable shadowrootclonable>
+      <slot></slot>
+    </template>
+    <span class=content>Content 2</span>
+  </div>
+
+  <div data-name="attribute position">
+    <template shadowrootclonable shadowrootserializable shadowrootdelegatesfocus shadowrootmode=open>
+      <slot></slot>
+    </template>
+    <span class=content>Content 1</span>
+    <span class=content>Content 2</span>
+  </div>
+
+  <div data-name="both template and attribute position">
+    <span class=content>Content 1</span>
+    <span class=content>Content 2</span>
+    <template shadowrootclonable shadowrootserializable shadowrootdelegatesfocus shadowrootmode=open>
+      <slot></slot>
+    </template>
+  </div>
+</div>
+
+<script>
+  function removeWhitespaceNodes(el) {
+    el.shadowRoot && removeWhitespaceNodes(el.shadowRoot);
+    var iter = document.createNodeIterator(el, NodeFilter.SHOW_TEXT,
+        (node) => (node.data.replace(/\s/g,'').length === 0) ?
+        NodeFilter.FILTER_ACCEPT : NodeFilter.FILTER_REJECT);
+    let node;
+    while (node = iter.nextNode()) {
+      node.remove();
+    }
+    return el;
+  }
+  const serialize = (host) => host.getHTML({shadowRoots: [host.shadowRoot]});
+
+  const testCases = Array.from(document.querySelectorAll('#tests>div'));
+  assert_true(testCases.length > 1);
+  const baseHost = removeWhitespaceNodes(testCases[0]);
+  const correctSerialization = serialize(baseHost);
+  baseHost.remove();
+  for(let i=1;i<testCases.length;++i) {
+    const thisHost = removeWhitespaceNodes(testCases[i]);
+    test(t => {
+      assert_equals(serialize(thisHost),correctSerialization,'Serialization should be identical');
+      thisHost.remove();
+    },thisHost.dataset.name);
+  }
+</script>