1 files changed, 39 insertions, 0 deletions
diff --git a/testing/web-platform/tests/reporting/same-origin-report-credentials.https.sub.html b/testing/web-platform/tests/reporting/same-origin-report-credentials.https.sub.html
new file mode 100644
index 0000000000..cd93bd601b
--- /dev/null
+++ b/testing/web-platform/tests/reporting/same-origin-report-credentials.https.sub.html
@@ -0,0 +1,39 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test that reports are sent with credentials to same-origin endpoints</title>
+  <script src='/resources/testharness.js'></script>
+  <script src='/resources/testharnessreport.js'></script>
+  <script src='resources/report-helper.js'></script>
+</head>
+<body>
+  <script>
+    const base_url = `${location.protocol}//${location.host}`;
+    const endpoint = `${base_url}/reporting/resources/report.py`;
+    const id = '320db941-960a-4529-8c4a-24aeb6739309';
+
+    promise_test(async t => {
+      // Set credentials, and set up test to clear them afterwards.
+      await fetch('/cookies/resources/set-cookie.py?name=report&path=%2F', {mode: 'no-cors', credentials: 'include', cache: 'no-store'});
+      t.add_cleanup(() => fetch("/cookies/resources/set.py?report=; path=%2F; expires=Thu, 01 Jan 1970 00:00:01 GMT"));
+
+      // Trigger a CSP error.
+      await new Promise(resolve => {
+        const img = document.createElement('img');
+        img.src = "/reporting/resources/fail.png";
+        img.addEventListener('error', resolve);
+        document.body.appendChild(img);
+      });
+
+      // Wait for report to be received.
+      const reports = await pollReports(endpoint, id);
+      checkReportExists(reports, 'csp-violation', location.href);
+
+      // Validate that credentials were sent to same-origin endpoint.
+      const cookies = await pollCookies(endpoint, id);
+      assert_true('report' in cookies, "Credentials were present in report");
+      assert_equals(cookies.report, "[report=1]", "Credential value was correct");
+    }, "Reporting endpoints received credentials.");
+  </script>
+</body>
+</html>