Bug 1535520 [wpt PR 15769] - HTML: named objects of navigated documents, a=testonly

Automatic update from web-platform-tests
HTML: named objects of navigated documents

For https://github.com/whatwg/html/pull/4404.
--

wpt-commits: 52bd6d9692ccd589c089d89bf59142cfc0e98288
wpt-pr: 15769

testing/web-platform/tests/common/echo.py

@@ -0,0 +1,6 @@
+def main(request, response):
+    # Without X-XSS-Protection to disable non-standard XSS protection the functionality this
+    # resource offers is useless
+    response.headers.set("X-XSS-Protection", "0")
+    response.headers.set("Content-Type", "text/html")
+    response.content = request.GET.first("content")

testing/web-platform/tests/html/browsers/the-window-object/named-access-on-the-window-object/navigated-named-objects.window.js

@@ -0,0 +1,67 @@
+// META: script=/common/get-host-info.sub.js
+
+function echoURL(content) {
+  return `/common/echo.py?content=${encodeURIComponent(content)}`;
+}
+
+function setSrc(frame, type, content) {
+  if (type === "same-origin") {
+    frame.src = echoURL(content);
+  } else if (type === "cross-site") {
+    frame.src = `${get_host_info().HTTP_NOTSAMESITE_ORIGIN}${echoURL(content)}`;
+  } else {
+    frame.srcdoc = content;
+  }
+}
+
+["srcdoc", "same-origin", "cross-site"].forEach(type => {
+  const initialType = type === "srcdoc" ? type : "same-origin";
+
+  [
+    {
+      "namedObject": "<div id=abc></div>",
+      "namedObjectLocalName": "div"
+    },
+    {
+      "namedObject": "<object name=abc></object>",
+      "namedObjectLocalName": "object"
+    },
+    {
+      "namedObject": "<iframe id=abc></iframe>",
+      "namedObjectLocalName": "iframe"
+    }
+  ].forEach(testData => {
+    async_test(t => {
+      const frame = document.createElement("iframe");
+      t.add_cleanup(() => frame.remove());
+      setSrc(frame, initialType, `<script>function f() { return abc }</script>${testData.namedObject}`);
+      frame.onload = t.step_func(() => {
+        const f = frame.contentWindow.f,
+              associatedAbc = f();
+        frame.onload = t.step_func_done(() => {
+          assert_equals(f(), associatedAbc);
+          assert_equals(associatedAbc.localName, testData.namedObjectLocalName);
+        });
+        setSrc(frame, type, "<span id=abc></span>");
+      });
+      document.body.append(frame);
+    }, `Window's associated Document object is used for finding named objects (<${testData.namedObjectLocalName}> via ${type} <iframe>)`);
+  });
+
+  async_test(t => {
+    const frame = document.createElement("iframe");
+    t.add_cleanup(() => frame.remove());
+    setSrc(frame, initialType, "<script>function f() { return abc }</script><object name=abc data='about:blank'></object>");
+    frame.onload = t.step_func(() => {
+      const f = frame.contentWindow.f,
+            associatedAbc = f(),
+            associatedAbcContainer = associatedAbc.frameElement;
+      frame.onload = t.step_func_done(() => {
+        assert_equals(f(), associatedAbcContainer);
+        assert_equals(associatedAbcContainer.contentWindow, null);
+      });
+      setSrc(frame, type, "<span id=abc></span>");
+    });
+    document.body.append(frame);
+  }, `Window's associated Document object is used for finding named objects (<object> with browsing ccontext via ${type} <iframe)>`);
+});