1 files changed, 52 insertions, 0 deletions
diff --git a/testing/web-platform/tests/cookies/samesite/window-open-reload.https.html b/testing/web-platform/tests/cookies/samesite/window-open-reload.https.html
new file mode 100644
index 0000000000..32076c7c97
--- /dev/null
+++ b/testing/web-platform/tests/cookies/samesite/window-open-reload.https.html
@@ -0,0 +1,52 @@
+<!DOCTYPE html>
+<meta charset="utf-8"/>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/cookies/resources/cookie-helper.sub.js"></script>
+<script>
+  // This test opens a popup window to postToParent.py (on the specified
+  // origin). The popup sends a postMessage event back to its opener
+  // (i.e., here) with the cookies it received, which we verify against
+  // expectedStatus. Then, the test sends a message to the popup, telling it to
+  // reload itself via window.location.reload(). Again, the popup posts a
+  // message back here with the cookies it received. These cookies are verified
+  // against expectedStatusReload.
+  function create_test(origin, target, expectedStatus, expectedStatusReload, title) {
+    promise_test(t => {
+      var value = "" + Math.random();
+      return resetSameSiteCookies(origin, value)
+        .then(_ => {
+          return new Promise((resolve, reject) => {
+            var w = window.open(target + "/cookies/resources/postToParent.py");
+
+            var reloaded = false;
+            var msgHandler = e => {
+              try {
+                verifySameSiteCookieState(reloaded ? expectedStatusReload : expectedStatus, value, e.data, DomSameSiteStatus.SAME_SITE);
+              } catch (e) {
+                reject(e);
+              }
+
+              if (reloaded) {
+                window.removeEventListener("message", msgHandler);
+                w.close();
+                resolve("Popup received the cookie.");
+              } else {
+                reloaded = true;
+                w.postMessage("reload", "*");
+              }
+            };
+            window.addEventListener("message", msgHandler);
+
+            if (!w)
+              reject("Popup could not be opened (did you allow the test site in your popup blocker?).");
+          });
+        });
+    }, title);
+  }
+
+  // The reload status is always strictly same-site because this is a site-initiated reload, as opposed to a reload triggered by a user interface element.
+  create_test(SECURE_ORIGIN, SECURE_ORIGIN, SameSiteStatus.STRICT, SameSiteStatus.STRICT, "Reloaded same-host auxiliary navigations are strictly same-site.");
+  create_test(SECURE_SUBDOMAIN_ORIGIN, SECURE_SUBDOMAIN_ORIGIN, SameSiteStatus.STRICT, SameSiteStatus.STRICT, "Reloaded subdomain auxiliary navigations are strictly same-site.");
+  create_test(SECURE_CROSS_SITE_ORIGIN, SECURE_CROSS_SITE_ORIGIN, SameSiteStatus.LAX, SameSiteStatus.STRICT, "Reloaded cross-site auxiliary navigations are strictly same-site");
+</script>