1 files changed, 41 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/dom/documents/resource-metadata-management/document-cookie.html b/testing/web-platform/tests/html/dom/documents/resource-metadata-management/document-cookie.html
new file mode 100644
index 0000000000..2af65effeb
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/resource-metadata-management/document-cookie.html
@@ -0,0 +1,41 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>document.cookie</title>
+<link rel="author" title="Denis Ah-Kang" href="mailto:denis@w3.org">
+<link rel=help href="https://html.spec.whatwg.org/multipage/#resource-metadata-management">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+
+const TEST_CASES = [
+  {value: "", expected: "", test: "Empty value"},
+  {value: "a=b", expected: "a=b", test: "A simple cookie"},
+  {value: "b=A\0Z", expected: "", test: "A null char"},
+];
+
+test(function(){
+  assert_equals(document.cookie, "");
+}, "document has no cookie");
+
+for (const i in TEST_CASES) {
+  const t = TEST_CASES[i];
+  test(() => {
+    document.cookie = t.value;
+    assert_equals(document.cookie, t.expected);
+
+    // Cleanup
+    if (document.cookie.includes("=")) {
+      document.cookie = document.cookie.split("=")[0] + "=; expires=Thu, 01 Jan 1970 00:00:00 UTC";
+      assert_equals(document.cookie, "");
+    }
+  }, t.name);
+}
+
+test(function(){
+  var doc = document.implementation.createHTMLDocument("doc");
+  assert_equals(doc.cookie, "");
+  doc.cookie = "test=foobar";
+  assert_equals(doc.cookie, "");
+}, "getting cookie for a cookie-averse document returns empty string, setting does nothing");
+</script>