1 files changed, 39 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-yes-subdomain-child2-yes-subdomain.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-yes-subdomain-child2-yes-subdomain.sub.https.html
new file mode 100644
index 0000000000..b6daf91b54
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-yes-subdomain-child2-yes-subdomain.sub.https.html
@@ -0,0 +1,39 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Parent is origin-keyed, subdomain child 1 is origin-keyed, same-subdomain child 2 is site-keyed</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+
+<div id="log"></div>
+
+<script type="module">
+import {
+  insertIframe,
+  testSameAgentCluster,
+  testDifferentAgentClusters,
+  testGetter
+} from "../resources/helpers.mjs";
+
+promise_setup(async () => {
+  // Order of loading should not matter, but we make it sequential to ensure the
+  // tests are deterministic.
+  await insertIframe("{{hosts[][www]}}", "?1");
+  await insertIframe("{{hosts[][www]}}", "?1");
+});
+
+
+// Since they're different-origin, the parent's request is respected, as is
+// child 1's request. child 2's request is redundant, since child 1 is in the
+// same browsing context group.
+//
+// So, the parent ends up in the origin-keyed agent cluster, and both children
+// ends up in a different origin-keyed agent cluster.
+testDifferentAgentClusters([self, 0], "Parent to child1");
+testDifferentAgentClusters([self, 1], "Parent to child2");
+testSameAgentCluster([0, 1], "child1 to child2");
+testSameAgentCluster([1, 0], "child2 to child1");
+
+testGetter(self, true, "parent");
+testGetter(0, true, "child1");
+testGetter(1, true, "child2");
+</script>