1 files changed, 44 insertions, 0 deletions
diff --git a/testing/web-platform/tests/referrer-policy/css-integration/child-css/processing-instruction.html b/testing/web-platform/tests/referrer-policy/css-integration/child-css/processing-instruction.html
new file mode 100644
index 0000000000..56db82c1d3
--- /dev/null
+++ b/testing/web-platform/tests/referrer-policy/css-integration/child-css/processing-instruction.html
@@ -0,0 +1,44 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>CSS integration - child css via a ProcessingInstruction</title>
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/utils.js"></script>
+    <!-- Common global functions for referrer-policy tests. -->
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <meta name="referrer" content="origin">
+  </head>
+  <body>
+    <p>Check that child css are loaded with the referrer and referrer policy the
+    external stylesheet(referenced from a ProcessingInstruction).</p>
+    <div class="styled"></div>
+
+    <script>
+      promise_test(function(css_test) {
+        let id = token();
+        let url_prefix = location.protocol + "//www1." + location.hostname + ":" +
+                         location.port +
+                         "/common/security-features/subresource/stylesheet.py?id=" +
+                         id;
+        let css_url = url_prefix + "&amp;import-rule";
+        let expected = url_prefix + "&import-rule";
+        let check_url = url_prefix + "&report-headers";
+
+        let processingInstruction =
+          document.createProcessingInstruction(
+            "xml-stylesheet", "href=\"" +css_url + "\" type=\"text/css\"");
+        document.insertBefore(processingInstruction, document.firstChild);
+        return timeoutPromise(css_test, 1000)
+          .then(() => requestViaXhr(check_url))
+          .then(function(message) {
+                assert_own_property(message, "headers");
+                assert_own_property(message, "referrer");
+                assert_equals(message.referrer, expected);
+            });
+      }, "Child css via a ProcessingInstruction.");
+    </script>
+
+    <div id="log"></div>
+  </body>
+</html>