Copy application code from older sample

Author: Dave Syer

src/app/app.component.html

@@ -1,20 +1,10 @@
-<!--The content below is only a placeholder and can be replaced.-->
-<div style="text-align:center">
+<div style="text-align:center"class="container">
   <h1>
-    Welcome to {{ title }}!
+    Welcome {{title}}!
   </h1>
-  <img width="300" alt="Angular Logo" src="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZpZXdCb3g9IjAgMCAyNTAgMjUwIj4KICAgIDxwYXRoIGZpbGw9IiNERDAwMzEiIGQ9Ik0xMjUgMzBMMzEuOSA2My4ybDE0LjIgMTIzLjFMMTI1IDIzMGw3OC45LTQzLjcgMTQuMi0xMjMuMXoiIC8+CiAgICA8cGF0aCBmaWxsPSIjQzMwMDJGIiBkPSJNMTI1IDMwdjIyLjItLjFWMjMwbDc4LjktNDMuNyAxNC4yLTEyMy4xTDEyNSAzMHoiIC8+CiAgICA8cGF0aCAgZmlsbD0iI0ZGRkZGRiIgZD0iTTEyNSA1Mi4xTDY2LjggMTgyLjZoMjEuN2wxMS43LTI5LjJoNDkuNGwxMS43IDI5LjJIMTgzTDEyNSA1Mi4xem0xNyA4My4zaC0zNGwxNy00MC45IDE3IDQwLjl6IiAvPgogIDwvc3ZnPg==">
+  <div class="container">
+    <p>Id: <span>{{data.id}}</span></p>
+    <p>Message: <span>{{data.content}}</span></p>
+  </div>
 </div>
-<h2>Here are some links to help you start: </h2>
-<ul>
-  <li>
-    <h2><a target="_blank" rel="noopener" href="https://angular.io/tutorial">Tour of Heroes</a></h2>
-  </li>
-  <li>
-    <h2><a target="_blank" rel="noopener" href="https://github.com/angular/angular-cli/wiki">CLI Documentation</a></h2>
-  </li>
-  <li>
-    <h2><a target="_blank" rel="noopener" href="https://blog.angular.io/">Angular blog</a></h2>
-  </li>
-</ul>
 

src/app/app.component.spec.ts

@@ -1,11 +1,13 @@
 import { TestBed, async } from '@angular/core/testing';
 import { AppComponent } from './app.component';
+import { HttpClientTestingModule, HttpTestingController } from '@angular/common/http/testing';
 describe('AppComponent', () => {
   beforeEach(async(() => {
     TestBed.configureTestingModule({
+      imports: [HttpClientTestingModule],
       declarations: [
         AppComponent
-      ],
+      ]
     }).compileComponents();
   }));
   it('should create the app', async(() => {
@@ -16,12 +18,19 @@ describe('AppComponent', () => {
   it(`should have as title 'app'`, async(() => {
     const fixture = TestBed.createComponent(AppComponent);
     const app = fixture.debugElement.componentInstance;
-    expect(app.title).toEqual('app');
+    expect(app.title).toEqual('Demo');
   }));
   it('should render title in a h1 tag', async(() => {
     const fixture = TestBed.createComponent(AppComponent);
     fixture.detectChanges();
     const compiled = fixture.debugElement.nativeElement;
-    expect(compiled.querySelector('h1').textContent).toContain('Welcome to app!');
+    expect(compiled.querySelector('h1').textContent).toContain('Welcome Demo!');
+  }));
+  it('should fetch data from backend', async(() => {
+    const http = TestBed.get(HttpTestingController);
+    const fixture = TestBed.createComponent(AppComponent);
+    const app = fixture.debugElement.componentInstance;
+    http.expectOne('resource').flush({id: 'XYZ', content: 'Hello'});
+    expect(app.data.content).toContain('Hello');
   }));
 });

src/app/app.component.ts

@@ -1,10 +1,15 @@
 import { Component } from '@angular/core';
+import { HttpClient } from '@angular/common/http';
 
 @Component({
   selector: 'app-root',
   templateUrl: './app.component.html',
   styleUrls: ['./app.component.css']
 })
 export class AppComponent {
-  title = 'app';
+  title = 'Demo';
+  data = {};
+  constructor(private http: HttpClient) {
+    http.get('resource').subscribe(data => this.data = data);
+  }
 }

src/app/app.module.ts

@@ -2,13 +2,15 @@ import { BrowserModule } from '@angular/platform-browser';
 import { NgModule } from '@angular/core';
 
 import { AppComponent } from './app.component';
+import { HttpClientModule } from '@angular/common/http';
 
 @NgModule({
   declarations: [
     AppComponent
   ],
   imports: [
-    BrowserModule
+    BrowserModule,
+    HttpClientModule
   ],
   providers: [],
   bootstrap: [AppComponent]