1 files changed, 37 insertions, 0 deletions
diff --git a/testing/web-platform/tests/client-hints/clear-site-data/clear-site-data-cookies.https.html b/testing/web-platform/tests/client-hints/clear-site-data/clear-site-data-cookies.https.html
new file mode 100644
index 0000000000..e506b717e1
--- /dev/null
+++ b/testing/web-platform/tests/client-hints/clear-site-data/clear-site-data-cookies.https.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<body>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script>
+// Here's the set-up for this test:
+// Step 1 (first window) Open new window to verify that hints were set.
+// Step 2 (second window) Alert first window of client hints present.
+// Step 3 (first window) Asserts client hints were present.
+// Step 4 (first window) Navigate other window to page that clears cookies.
+// Step 5 (second window) Navigate to a page that can check client hints still sent.
+// Step 6 (second window) Alert first window of client hints present.
+// Step 7 (first window) Asserts client hints were not present.
+async_test(t => {
+    var new_window;
+
+    // Step 3
+    window.addEventListener("message", t.step_func(e => {
+        assert_equals(e.data, "HadDeviceMemory");
+
+        // Step 7
+        window.addEventListener("message", t.step_func(e => {
+            assert_equals(e.data, "MissingDeviceMemory");
+            t.done();
+        }), {once: true});
+
+        // Step 4
+        new_window.location.href = "/client-hints/clear-site-data/resources/clear-site-data.py?target=cookies";
+    }), {once: true});
+
+    // Step 1
+    new_window = window.open("/client-hints/clear-site-data/resources/check-client-hints.py");
+    t.add_cleanup(() => new_window.close());
+}, "Clear-Site-Data for cookies should remove all client hints.");
+</script>
+</body>
+</html>