Implement Blink-in-JS for DOM methods

Source/core/testing/Internals.js

+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+"use strict";
+
+installClass("Internals", function(global) {
+    var InternalsPrototype = Object.create(Element.prototype);
+
+    InternalsPrototype.doNothing = function() {
+    }
+
+    InternalsPrototype.return123 = function() {
+        return 123;
+    }
+
+    InternalsPrototype.echoInteger = function(value) {
+        return value;
+    }
+
+    InternalsPrototype.echoString = function(value) {
+        return value;
+    }
+
+    InternalsPrototype.echoNode = function(value) {
+        return value;
+    }
+
+    InternalsPrototype.addInteger = function(value1, value2) {
+        return value1 + value2;
+    }
+
+    InternalsPrototype.addString = function(value1, value2) {
+        return value1 + value2;
+    }
+
+    InternalsPrototype.setIntegerToDocument = function(document, value) {
+        document.integer = value;
+    }
+
+    InternalsPrototype.getIntegerFromDocument = function(document) {
+        return document.integer;
+    }
+
+    InternalsPrototype.setIntegerToPrototype = function(value) {
+        this.integer = value;
+    }
+
+    InternalsPrototype.getIntegerFromPrototype = function() {
+        return this.integer;
+    }
+
+    InternalsPrototype.createElement = function(document) {
+        return document.createElement("div");
+    }
+
+    InternalsPrototype.appendChild = function(node1, node2) {
+        node1.appendChild(node2);
+    }
+
+    InternalsPrototype.firstChild = function(node) {
+        return node.firstChild;
+    }
+
+    InternalsPrototype.nextSibling = function(node) {
+        return node.nextSibling;
+    }
+
+    InternalsPrototype.innerHTML = function(node) {
+        return node.innerHTML;
+    }
+
+    InternalsPrototype.setInnerHTML = function(node, string) {
+        node.innerHTML = string;
+    }
+
+    InternalsPrototype.addClickListener = function(node) {
+        node.addEventListener("click", function () {
+            node.innerHTML = "clicked";
+        });
+    }
+
+    InternalsPrototype.clickNode = function(document, node) {
+        var event = new MouseEvent("click", { bubbles: true, cancelable: true, view: global });
+        node.dispatchEvent(event);
+    }
+
+    return InternalsPrototype;
+});