Bug 1862371 [wpt PR 16244] - HTML: Test that <details open> fires the…

… event even from the parser., a=testonly

Automatic update from web-platform-tests
HTML: Test that <details open> fires the event even from the parser.

whatwg/html#4500

--

wpt-commits: 06854ec7854c9061b84a8d675ff6fb8f0dcd08fc
wpt-pr: 16244

testing/web-platform/tests/html/semantics/interactive-elements/the-details-element/toggleEvent.html

@@ -175,4 +175,9 @@
     t10.done();
   }, 0);
 
+  async_test(function(t) {
+    new DOMParser().parseFromString("<details open>", "text/html").querySelector("details").ontoggle = t.step_func_done(function(e) {
+      assert_true(e.target.open);
+    });
+  }, "Setting open from the parser fires a toggle event");
 </script>