1 files changed, 28 insertions, 0 deletions
diff --git a/testing/web-platform/tests/speculation-rules/prerender/csp-prefetch-src-disallow.html b/testing/web-platform/tests/speculation-rules/prerender/csp-prefetch-src-disallow.html
new file mode 100644
index 0000000000..e8ed74b457
--- /dev/null
+++ b/testing/web-platform/tests/speculation-rules/prerender/csp-prefetch-src-disallow.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<meta name="timeout" content="long">
+<script src="/common/utils.js"></script>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="resources/utils.js"></script>
+<body>
+<script>
+
+setup(() => assertSpeculationRulesIsSupported());
+
+promise_test(async t => {
+  // The key used for storing a test result in the server.
+  const key = token();
+
+  // Open the test runner in a popup - it will prerender itself, record the
+  // test results, and send them back to this harness.
+  const url = `resources/csp-prefetch-src-disallow.sub.html?key=${key}`;
+  window.open(url, '_blank', 'noopener');
+
+  // Wait until the test sends us the results.
+  const result = await nextValueFromServer(key);
+
+  assert_equals(result, "blocked by prefetch-src", "initial document.prerendering");
+}, 'Test if CSP prefetch-src prevent prerendering correctly.');
+
+</script>
+</body>