1 files changed, 59 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/semantics/embedded-content/the-iframe-element/cross-origin-to-whom-part-2.window.js b/testing/web-platform/tests/html/semantics/embedded-content/the-iframe-element/cross-origin-to-whom-part-2.window.js
new file mode 100644
index 0000000000..c88158d267
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/embedded-content/the-iframe-element/cross-origin-to-whom-part-2.window.js
@@ -0,0 +1,59 @@
+async_test(t => {
+  const frame = document.body.appendChild(document.createElement("iframe"));
+  frame.src = "support/document-with-embedded-svg.html";
+  const elements = {
+    "embed": ["getSVGDocument"],
+    "frame": ["contentDocument"],
+    "iframe": ["getSVGDocument", "contentDocument"],
+    "object": ["getSVGDocument", "contentDocument"]
+  };
+  function element_to_document(element, api) {
+    return api === "getSVGDocument" ? element[api]() : element[api];
+  }
+  function assert_apis(instance, assertNull = false) {
+    const name = instance.localName;
+    let priorPossibleDocument = null;
+    elements[name].forEach(api => {
+      const assertReason = `${name}.${api}`;
+      const possibleDocument = element_to_document(instance, api);
+      if (assertNull) {
+        assert_equals(possibleDocument, null, assertReason);
+        return;
+      } else {
+        assert_not_equals(possibleDocument, null, assertReason);
+
+        // This needs standardizing still
+        // assert_class_string(possibleDocument, "XMLDocument");
+      }
+
+      // Ensure getSVGDocument() and contentDocument if both available return the same
+      if (priorPossibleDocument === null) {
+        priorPossibleDocument = possibleDocument;
+      } else {
+        assert_equals(priorPossibleDocument, possibleDocument);
+      }
+    });
+  }
+  frame.onload = t.step_func_done(() => {
+    const instances = Object.keys(elements).map(element => frame.contentDocument.querySelector(element));
+    // Everything is same origin and same origin-domain, no sweat
+    instances.forEach(instance => assert_apis(instance));
+    // Make the SVG cross origin-domain (its container and the current settings object are not
+    // affected)
+    instances.forEach(instance => {
+      const svgDocument = element_to_document(instance, elements[instance.localName][0]);
+      svgDocument.domain = svgDocument.domain;
+    });
+    instances.forEach(instance => assert_apis(instance, true));
+    const svgContainer = frame.contentDocument;
+    // Make the current settings object same origin-domain with the SVG and cross origin-domain with
+    // SVG's container (SVG's container is not affected)
+    document.domain = document.domain;
+    assert_equals(frame.contentDocument, null);
+    instances.forEach(instance => assert_apis(instance, true));
+    // Make everything same origin-domain once more
+    svgContainer.domain = svgContainer.domain;
+    instances.forEach(instance => assert_apis(instance));
+  });
+  document.body.appendChild(frame);
+}, "Test embed/frame/iframe/object nested document APIs for same origin-domain and cross origin-domain embedder document");