1 files changed, 27 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/dom/render-blocking/remove-attr-stylesheet-link-keeps-blocking.html b/testing/web-platform/tests/html/dom/render-blocking/remove-attr-stylesheet-link-keeps-blocking.html
new file mode 100644
index 0000000000..1248b90b23
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/render-blocking/remove-attr-stylesheet-link-keeps-blocking.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<title>Parser-inserted stylesheet link still blocks rendering after removing `blocking=render`</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="support/test-render-blocking.js"></script>
+
+<script>
+// Test script must be added before the stylesheet link because the stylesheet
+// link is script-blocking.
+
+promise_setup(async () => {
+  let sheet = await nodeInserted(document.head, node => node.id === 'sheet');
+  sheet.blocking = '';
+});
+
+test_render_blocking(
+  () => {
+    let color = getComputedStyle(document.querySelector('.target')).color;
+    assert_equals(color, 'rgb(255, 0, 0)');
+  },
+  'Render-blocking stylesheet is applied');
+</script>
+
+<link id="sheet" rel="stylesheet" blocking="render"
+      href="support/target-red.css?pipe=trickle(d1)">
+
+<div class="target">Some text</div>