diff --git a/tests/wpt/mozilla/meta/MANIFEST.json b/tests/wpt/mozilla/meta/MANIFEST.json
index 5b451022e62..6d77e39770b 100644
--- a/tests/wpt/mozilla/meta/MANIFEST.json
+++ b/tests/wpt/mozilla/meta/MANIFEST.json
@@ -11369,6 +11369,12 @@
      {}
     ]
    ],
+   "mozilla/adopted_node_is_same_origin_domain.html": [
+    [
+     "/_mozilla/mozilla/adopted_node_is_same_origin_domain.html",
+     {}
+    ]
+   ],
    "mozilla/binding_keyword.html": [
     [
      "/_mozilla/mozilla/binding_keyword.html",
@@ -24492,6 +24498,10 @@
    "170d51460da58c16f5cf94ecda18f18a1c18c116",
    "support"
   ],
+  "mozilla/adopted_node_is_same_origin_domain.html": [
+   "3f2e6af92f9391aa1892e485c61c9e92c7661194",
+   "testharness"
+  ],
   "mozilla/binding_keyword.html": [
    "c79aa6d506fbabbed0f6f31d1b8600ea6ba8ff41",
    "testharness"
diff --git a/tests/wpt/mozilla/meta/mozilla/adopted_node_is_same_origin_domain.html.ini b/tests/wpt/mozilla/meta/mozilla/adopted_node_is_same_origin_domain.html.ini
new file mode 100644
index 00000000000..3c4d9edc50f
--- /dev/null
+++ b/tests/wpt/mozilla/meta/mozilla/adopted_node_is_same_origin_domain.html.ini
@@ -0,0 +1,4 @@
+[adopted_node_is_same_origin_domain.html]
+  type: testharness
+  [Adopting a node should make it same-origin-domain.]
+    expected: FAIL
diff --git a/tests/wpt/mozilla/tests/mozilla/adopted_node_is_same_origin_domain.html b/tests/wpt/mozilla/tests/mozilla/adopted_node_is_same_origin_domain.html
new file mode 100644
index 00000000000..81de5b389c9
--- /dev/null
+++ b/tests/wpt/mozilla/tests/mozilla/adopted_node_is_same_origin_domain.html
@@ -0,0 +1,30 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>Ensure that adopted nodes pass the same-origin-domain checks</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-document-adoptnode">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+async_test(function(t) {
+  // This tests that adopting a node changes its same-origin-domain checks.
+  var iframe = document.createElement("iframe");
+  iframe.src = "/common/blank.html";
+  iframe.onload = t.step_func(function() {
+    // Create two nodes in the iframe's content document.
+    var nodeToAdopt = iframe.contentDocument.createElement("div");
+    var nodeToLeaveUnadopted = iframe.contentDocument.createElement("div");
+    document.adoptNode(nodeToAdopt);
+    assert_equals(nodeToAdopt.ownerDocument, document);
+    assert_equals(nodeToLeaveUnadopted.ownerDocument, iframe.contentDocument);
+    // Setting the iframe's document.domain causes it not to be same-origin-domain
+    iframe.contentDocument.domain = document.domain;
+    // We can still access the adopted node, since it is still same-origin-domain,
+    // but accessing the unadopted node throws a security exception.
+    assert_equals(nodeToAdopt.ownerDocument, document);
+    assert_throws(null, function() { nodeToLeaveUnadopted.ownerDocument; });
+    t.done();
+  });
+  document.body.appendChild(iframe);
+}, "Adopting a node should make it same-origin-domain.")
+</script>
