1 files changed, 50 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/anonymous-iframe/anonymous-window.tentative.https.window.js b/testing/web-platform/tests/html/anonymous-iframe/anonymous-window.tentative.https.window.js
new file mode 100644
index 0000000000..8c9c103429
--- /dev/null
+++ b/testing/web-platform/tests/html/anonymous-iframe/anonymous-window.tentative.https.window.js
@@ -0,0 +1,50 @@
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=/html/cross-origin-embedder-policy/credentialless/resources/common.js
+
+const {ORIGIN} = get_host_info();
+
+promise_test_parallel(async t => {
+  const iframe = document.createElement("iframe");
+  iframe.src = ORIGIN + "/common/blank.html?pipe=status(204)";
+  iframe.credentialless = false;
+  document.body.appendChild(iframe);
+  iframe.credentialless = true;
+  iframe.contentWindow.modified = true;
+  iframe.src = ORIGIN + "/common/blank.html";
+  // Wait for navigation to complete.
+  await new Promise(resolve => iframe.onload = resolve);
+  assert_true(iframe.credentialless);
+  assert_true(iframe.contentWindow.credentialless);
+  assert_equals(undefined, iframe.contentWindow.modified);
+}, "Credentialless (false => true) => window not reused.");
+
+promise_test_parallel(async t => {
+  const iframe = document.createElement("iframe");
+  iframe.src = ORIGIN + "/common/blank.html?pipe=status(204)";
+  iframe.credentialless = true;
+  document.body.appendChild(iframe);
+  iframe.credentialless = false;
+  iframe.contentWindow.modified = true;
+  iframe.src = ORIGIN + "/common/blank.html";
+  // Wait for navigation to complete.
+  await new Promise(resolve => iframe.onload = resolve);
+  assert_false(iframe.credentialless);
+  assert_false(iframe.contentWindow.credentialless);
+  assert_equals(undefined, iframe.contentWindow.modified);
+}, "Credentialless (true => false) => window not reused.");
+
+promise_test_parallel(async t => {
+  const iframe = document.createElement("iframe");
+  iframe.credentialless = true;
+  iframe.src = ORIGIN + "/common/blank.html?pipe=status(204)";
+  document.body.appendChild(iframe);
+  iframe.credentialless = true;
+  iframe.contentWindow.modified = true;
+  iframe.src = ORIGIN + "/common/blank.html";
+  // Wait for navigation to complete.
+  await new Promise(resolve => iframe.onload = resolve);
+  assert_true(iframe.credentialless);
+  assert_true(iframe.contentWindow.credentialless);
+  assert_true(iframe.contentWindow.modified);
+}, "Credentialless (true => true) => window reused.");