1 files changed, 35 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/semantics/scripting-1/the-script-element/moving-between-documents/ordering/in-order.html b/testing/web-platform/tests/html/semantics/scripting-1/the-script-element/moving-between-documents/ordering/in-order.html
new file mode 100644
index 0000000000..6a3e2b54a7
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/scripting-1/the-script-element/moving-between-documents/ordering/in-order.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<link rel="help" href="https://html.spec.whatwg.org/C/#list-of-scripts-that-will-execute-in-order-as-soon-as-possible">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="helper.js"></script>
+<body>
+<script>
+const t = async_test('Script elements (in-order) still block subsequent in-order scripts in the original Document after moved to another Document');
+const start_time = performance.now();
+const iframe = document.createElement('iframe');
+document.body.appendChild(iframe);
+
+const onScript2Evaluated = t.step_func_done(() => {
+  // `script1` should remain the
+  // #list-of-scripts-that-will-execute-in-order-as-soon-as-possible of the
+  // original Document and thus blocks `script2` evaluation until it is loaded.
+  assert_greater_than(performance.now() - start_time, 2000,
+      'In-order scripts should block subsequent in-order scripts');
+});
+
+const script1 = document.createElement('script');
+script1.async = false;
+script1.setAttribute('src', '../../resources/throw.js?pipe=trickle(d2)');
+document.body.appendChild(script1);
+
+const script2 = document.createElement('script');
+script2.async = false;
+script2.setAttribute('src', 'data:text/javascript,onScript2Evaluated()');
+document.body.appendChild(script2);
+
+t.step_timeout(() => {
+  iframe.contentDocument.body.appendChild(script1);
+}, 1000);
+</script>