initial codebase

src/app/home/home-routing.module.ts

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+import { NgModule } from '@angular/core';
+import { Routes, RouterModule } from '@angular/router';
+
+import { Route, extract } from '@app/core';
+import { HomeComponent } from './home.component';
+
+const routes: Routes = [
+  Route.withShell([
+    { path: '', redirectTo: '/home', pathMatch: 'full' },
+    { path: 'home', component: HomeComponent, data: { title: extract('Home') } }
+  ])
+];
+
+@NgModule({
+  imports: [RouterModule.forChild(routes)],
+  exports: [RouterModule],
+  providers: []
+})
+export class HomeRoutingModule { }

src/app/home/home.component.html

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+<div class="container-fluid">
+  <div class="text-center">
+      <img class="logo" src="assets/images/mifos_lg-logo.jpg"/>
+    <!-- <app-loader [isLoading]="isLoading"></app-loader>
+    <q [hidden]="isLoading">{{quote}}</q> -->
+  </div>
+</div>

src/app/home/home.component.scss

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+.logo {
+  width: 500px;
+}
+
+q {
+  font-style: italic;
+  font-size: 1.2rem;
+  quotes: "« " " »";
+}

src/app/home/home.component.spec.ts

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+import { async, ComponentFixture, TestBed } from '@angular/core/testing';
+import { HttpClientTestingModule } from '@angular/common/http/testing';
+
+import { CoreModule } from '@app/core';
+import { SharedModule } from '@app/shared';
+import { HomeComponent } from './home.component';
+import { QuoteService } from './quote.service';
+
+describe('HomeComponent', () => {
+  let component: HomeComponent;
+  let fixture: ComponentFixture<HomeComponent>;
+
+  beforeEach(async(() => {
+    TestBed.configureTestingModule({
+        imports: [
+          CoreModule,
+          SharedModule,
+          HttpClientTestingModule
+        ],
+        declarations: [HomeComponent],
+        providers: [QuoteService]
+      })
+      .compileComponents();
+  }));
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(HomeComponent);
+    component = fixture.componentInstance;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+});

src/app/home/home.component.ts

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+import { Component, OnInit } from '@angular/core';
+import { finalize } from 'rxjs/operators';
+
+import { QuoteService } from './quote.service';
+
+@Component({
+  selector: 'app-home',
+  templateUrl: './home.component.html',
+  styleUrls: ['./home.component.scss']
+})
+export class HomeComponent implements OnInit {
+
+  quote: string;
+  isLoading: boolean;
+
+  constructor(private quoteService: QuoteService) { }
+
+  ngOnInit() {
+    this.isLoading = true;
+    this.quoteService.getRandomQuote({ category: 'dev' })
+      .pipe(finalize(() => { this.isLoading = false; }))
+      .subscribe((quote: string) => { this.quote = quote; });
+  }
+
+}

src/app/home/home.module.ts

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+import { NgModule } from '@angular/core';
+import { CommonModule } from '@angular/common';
+import { TranslateModule } from '@ngx-translate/core';
+
+import { CoreModule } from '@app/core';
+import { SharedModule } from '@app/shared';
+import { HomeRoutingModule } from './home-routing.module';
+import { HomeComponent } from './home.component';
+import { QuoteService } from './quote.service';
+
+@NgModule({
+  imports: [
+    CommonModule,
+    TranslateModule,
+    CoreModule,
+    SharedModule,
+    HomeRoutingModule
+  ],
+  declarations: [
+    HomeComponent
+  ],
+  providers: [
+    QuoteService
+  ]
+})
+export class HomeModule { }

src/app/home/quote.service.spec.ts

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+import { TestBed, inject, async } from '@angular/core/testing';
+import { HttpClientTestingModule, HttpTestingController } from '@angular/common/http/testing';
+
+import { CoreModule, HttpCacheService } from '@app/core';
+import { QuoteService } from './quote.service';
+
+describe('QuoteService', () => {
+  let quoteService: QuoteService;
+  let httpMock: HttpTestingController;
+
+  beforeEach(async(() => {
+    TestBed.configureTestingModule({
+      imports: [
+        CoreModule,
+        HttpClientTestingModule
+      ],
+      providers: [
+        HttpCacheService,
+        QuoteService
+      ]
+    });
+  }));
+
+  beforeEach(inject([
+    HttpCacheService,
+    QuoteService,
+    HttpTestingController
+  ], (htttpCacheService: HttpCacheService,
+      _quoteService: QuoteService,
+      _httpMock: HttpTestingController) => {
+
+    quoteService = _quoteService;
+    httpMock = _httpMock;
+
+    htttpCacheService.cleanCache();
+  }));
+
+  afterEach(() => {
+    httpMock.verify();
+  });
+
+  describe('getRandomQuote', () => {
+    it('should return a random Chuck Norris quote', () => {
+      // Arrange
+      const mockQuote = { value: 'a random quote' };
+
+      // Act
+      const randomQuoteSubscription = quoteService.getRandomQuote({ category: 'toto' });
+
+      // Assert
+      randomQuoteSubscription.subscribe((quote: string) => {
+        expect(quote).toEqual(mockQuote.value);
+      });
+      httpMock.expectOne({}).flush(mockQuote);
+    });
+
+    it('should return a string in case of error', () => {
+      // Act
+      const randomQuoteSubscription = quoteService.getRandomQuote({ category: 'toto' });
+
+      // Assert
+      randomQuoteSubscription.subscribe((quote: string) => {
+        expect(typeof quote).toEqual('string');
+        expect(quote).toContain('Error');
+      });
+      httpMock.expectOne({}).flush(null, {
+        status: 500,
+        statusText: 'error'
+      });
+    });
+  });
+});

src/app/home/quote.service.ts

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+import { Injectable } from '@angular/core';
+import { HttpClient } from '@angular/common/http';
+import { Observable, of } from 'rxjs';
+import { map, catchError } from 'rxjs/operators';
+
+const routes = {
+  quote: (c: RandomQuoteContext) => `/jokes/random?category=${c.category}`
+};
+
+export interface RandomQuoteContext {
+  // The quote's category: 'dev', 'explicit'...
+  category: string;
+}
+
+@Injectable()
+export class QuoteService {
+
+  constructor(private httpClient: HttpClient) { }
+
+  getRandomQuote(context: RandomQuoteContext): Observable<string> {
+    return this.httpClient
+      .cache()
+      .get(routes.quote(context))
+      .pipe(
+        map((body: any) => body.value),
+        catchError(() => of('Error, could not load joke :-('))
+      );
+  }
+
+}