Bug 1813109 [wpt PR 38222] - VT: Require a documentElement for the tr…

…ansition to happen, a=testonly Automatic update from web-platform-tests VT: Require a documentElement for the transition to happen This patch ensures that we don't start a transition if we don't have a document element. This is because documentElement is the originating element for the pseudo tree, so we need to have it for the transition to happen. Note that if we want to support documents that don't have a documentElement, then we need to figure out where to put the pseudo elements. [email protected] Fixed: 1410435 Change-Id: Ib380e87dba2986ace6a567f37ff2cfa5b30268ec Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4198955 Reviewed-by: Khushal Sagar <[email protected]> Commit-Queue: Khushal Sagar <[email protected]> Cr-Commit-Position: refs/heads/main@{#1097990} -- wpt-commits: 30e0b260a99eb53f0de4a838b50c60406a42efc0 wpt-pr: 38222
dothq · Feb 2, 2023 · 2691844 · 2691844
1 parent 910f20a
commit 2691844
Showing 1 changed file with 21 additions and 0 deletions.
diff --git a/testing/web-platform/tests/css/css-view-transitions/transition-no-document-element.html b/testing/web-platform/tests/css/css-view-transitions/transition-no-document-element.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<html>
+<title>View transitions: try to start a transition without a document element</title>
+<link rel="help" href="https://drafts.csswg.org/css-view-transitions-1/">
+<link rel="author" href="mailto:[email protected]">
+
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+
+<iframe id=frame srcdoc='<svg xmlns="http://www.w3.org/2000/svg" width="10" height="10" viewBox="0 0 10 10"></svg>'>
+</iframe>
+
+<script>
+async_test((t) => {
+  requestAnimationFrame(() => requestAnimationFrame(() => {
+    t.step(() => assert_equals(frame.contentDocument.documentElement, null, "document element"));
+    t.step(() => assert_equals(frame.contentDocument.startViewTransition(), null, "transition object"));
+    t.done();
+  }));
+}, "transition without document element is null")
+</script>