HTML: mutating the style element

web-platform-tests · Dec 5, 2019 · 15f84a8 · 15f84a8
1 parent 839b6b8
commit 15f84a8
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/html/semantics/document-metadata/the-style-element/mutations.window.js b/html/semantics/document-metadata/the-style-element/mutations.window.js
@@ -0,0 +1,7 @@
+test(() => {
+  const style = document.body.appendChild(document.createElement("style")),
+        styleS = style.sheet;
+  assert_not_equals(styleS, null);
+  style.appendChild(new Comment());
+  assert_equals(styleS, style.sheet);
+}, "Mutating the style element: inserting a Comment node");