feat(mock-doc): try adding Node to mock-doc (#1947)

src/mock-doc/global.ts

@@ -93,6 +93,7 @@ const WINDOW_PROPS = [
   'Event',
   'Element',
   'HTMLElement',
+  'Node',
   'NodeList',
   'KeyboardEvent',
   'MouseEvent'

src/mock-doc/window.ts

@@ -2,7 +2,7 @@ import { createConsole } from './console';
 import { MockCustomElementRegistry, resetCustomElementRegistry } from './custom-element-registry';
 import { MockCustomEvent, MockEvent, MockKeyboardEvent, MockMouseEvent, addEventListener, dispatchEvent, removeEventListener, resetEventListeners } from './event';
 import { MockDocument, resetDocument } from './document';
-import { MockElement, MockHTMLElement, MockNodeList} from './node';
+import { MockElement, MockHTMLElement, MockNode, MockNodeList } from './node';
 import { MockHistory } from './history';
 import { MockLocation } from './location';
 import { MockNavigator } from './navigator';
@@ -14,6 +14,7 @@ import { URL } from 'url';
 const historyMap = new WeakMap<MockWindow, MockHistory>();
 const elementCstrMap = new WeakMap<MockWindow, any>();
 const htmlElementCstrMap = new WeakMap<MockWindow, any>();
+const nodeCstrMap = new WeakMap<MockWindow, any>();
 const nodeListCstrMap = new WeakMap<MockWindow, any>();
 const localStorageMap = new WeakMap<MockWindow, MockStorage>();
 const locMap = new WeakMap<MockWindow, MockLocation>();
@@ -213,6 +214,20 @@ export class MockWindow {
     return ElementCstr;
   }
 
+  get Node() {
+    let NodeCstr = nodeCstrMap.get(this);
+    if (NodeCstr == null) {
+      const ownerDocument = this.document;
+      NodeCstr = class extends MockNode {
+        constructor() {
+          super(ownerDocument, 0, 'test', '');
+          throw (new Error('Illegal constructor: cannot constructor'));
+        }
+      };
+      return NodeCstr;
+    }
+  }
+
   get NodeList() {
     let NodeListCstr = nodeListCstrMap.get(this);
     if (NodeListCstr == null) {

src/runtime/test/globals.spec.tsx

@@ -40,10 +40,12 @@ describe('globals', () => {
       class CmpEl {
         // @ts-ignore
         private protoEl: any;
+        private protoNode: any;
         private protoNodeList: any;
 
         constructor() {
           this.protoEl = Element.prototype;
+          this.protoNode = Node.prototype;
           this.protoNodeList = NodeList.prototype;
         }
       }
@@ -53,6 +55,14 @@ describe('globals', () => {
         html: `<cmp-el></cmp-el>`
       });
     });
+
+    it('allows access to the Node prototype', async () => {
+      expect(page.rootInstance.protoNode).toEqual(Node.prototype);
+      expect(page.rootInstance.protoNode).toEqual((page.win as any).Node.prototype);
+      expect(page.rootInstance.protoNode).toEqual((window as any).Node.prototype);
+      expect(page.rootInstance.protoNode).toEqual((global as any).Node.prototype);
+      expect(page.rootInstance.protoNode).toBeTruthy();
+    });
     it('allows access to the NodeList prototype', async () => {
       expect(page.rootInstance.protoNodeList).toEqual(NodeList.prototype);
       expect(page.rootInstance.protoNodeList).toEqual((page.win as any).NodeList.prototype);