fix(mock-doc): title.text

Author: adamdbradley

src/mock-doc/element.ts

@@ -38,6 +38,9 @@ export function createElement(ownerDocument: any, tagName: string) {
 
     case 'template':
       return new MockTemplateElement(ownerDocument);
+
+    case 'title':
+      return new MockTitleElement(ownerDocument);
   }
 
   if (ownerDocument != null && tagName.includes('-')) {
@@ -230,6 +233,21 @@ export class MockTemplateElement extends MockElement {
 }
 
 
+class MockTitleElement extends MockElement {
+  constructor(ownerDocument: any) {
+    super(ownerDocument, 'title');
+  }
+
+  get text() {
+    return this.textContent;
+  }
+  set text(value: string) {
+    this.textContent = value;
+  }
+}
+
+
+
 function fullUrl(elm: MockElement, attrName: string) {
   const val = elm.getAttribute(attrName) || '';
   if (elm.ownerDocument != null) {

src/mock-doc/test/element.spec.ts

@@ -7,6 +7,20 @@ describe('element', () => {
     doc = new MockDocument();
   });
 
+  it('document.title', () => {
+    document.title = 'Hello Title';
+    expect(document.title).toBe('Hello Title');
+
+    const titleElm = document.head.querySelector('title');
+    expect(titleElm.textContent).toBe('Hello Title');
+    expect(titleElm.text).toBe('Hello Title');
+
+    titleElm.text = 'Hello Text';
+    expect(document.title).toBe('Hello Text');
+    expect(titleElm.text).toBe('Hello Text');
+    expect(titleElm.textContent).toBe('Hello Text');
+  });
+
   it('isConnected nested true', () => {
     const elmParent = document.createElement('div');
     const elmChild = document.createElement('div');