1 files changed, 19 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/dom/render-blocking/parser-inserted-defer-script.html b/testing/web-platform/tests/html/dom/render-blocking/parser-inserted-defer-script.html
new file mode 100644
index 0000000000..1ae8caf2ec
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/render-blocking/parser-inserted-defer-script.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<title>Parser-inserted defer script elements with "blocking=render" are render-blocking</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="support/test-render-blocking.js"></script>
+
+<script id="defer-script" defer blocking="render"
+        src="support/dummy-1.js?pipe=trickle(d1)">
+</script>
+
+<div>Some text</div>
+
+<script>
+const deferScript = document.getElementById('defer-script');
+test_render_blocking(
+    deferScript,
+    () => assert_equals(window.dummy, 1),
+    'Parser-inserted render-blocking defer script is evaluated');
+</script>