BETTERZON-83: Writing unit tests for angular to improve code coverage

Frontend/angular.json

@@ -88,6 +88,7 @@
                         "tsConfig": "tsconfig.spec.json",
                         "karmaConfig": "karma.conf.js",
                         "codeCoverage": true,
+                        "codeCoverageExclude": ["src/app/mocks/mock.service.ts"],
                         "assets": [
                             "src/favicon.ico",
                             "src/assets"
@@ -128,6 +129,7 @@
                     }
                 }
             }
-    }},
+        }
+    },
     "defaultProject": "Betterzon"
 }

Frontend/src/app/app.component.spec.ts

@@ -28,6 +28,7 @@ describe('AppComponent', () => {
     it('should create the app', () => {
         const fixture = TestBed.createComponent(AppComponent);
         const app = fixture.componentInstance;
+        app.ngOnInit();
         expect(app).toBeTruthy();
     });
 

Frontend/src/app/app.routing.ts

@@ -11,7 +11,7 @@ import {ImprintComponent} from './pages/imprint/imprint.component';
 import {PrivacyComponent} from './pages/privacy/privacy.component';
 
 const routes: Routes = [
-    {path: '', component: LandingpageComponent},
+    {path: '', component: LandingpageComponent, pathMatch: 'full'},
     {path: 'search', component: ProductSearchPageComponent},
     {path: 'product/:id', component: ProductDetailPageComponent},
     {path: 'impressum', component: ImprintComponent},

Frontend/src/app/components/footer/footer.component.spec.ts

@@ -2,13 +2,21 @@ import {ComponentFixture, TestBed} from '@angular/core/testing';
 
 import {FooterComponent} from './footer.component';
 import {RouterTestingModule} from "@angular/router/testing";
+import {AppComponent} from "../../app.component";
+import {ImprintComponent} from "../../pages/imprint/imprint.component";
+import {ActivatedRoute, Router} from "@angular/router";
 
 describe('FooterComponent', () => {
     let component: FooterComponent;
     let fixture: ComponentFixture<FooterComponent>;
+    let router = {
+        navigate: jasmine.createSpy('navigate'),
+        routerState: jasmine.createSpy('routerState')
+    }
 
     beforeEach(async () => {
         await TestBed.configureTestingModule({
+            providers: [{provide: Router, useValue: router}],
             declarations: [FooterComponent],
             imports: [
                 RouterTestingModule
@@ -26,4 +34,9 @@ describe('FooterComponent', () => {
     it('should create', () => {
         expect(component).toBeTruthy();
     });
+
+    it('should navigate to /impressum when navigateImprint() is called', () => {
+        component.navigateImprint();
+        expect(router.navigate).toHaveBeenCalledWith(['/impressum']);
+    });
 });

Frontend/src/app/components/footer/footer.component.ts

@@ -17,7 +17,7 @@ export class FooterComponent implements OnInit {
   }
 
   navigateImprint(): void {
-      this.router.navigate([('/impressum/')]);
+      this.router.navigate([('/impressum')]);
   }
 
 }

Frontend/src/app/components/header/header.component.spec.ts

@@ -3,13 +3,23 @@ import {ComponentFixture, TestBed} from '@angular/core/testing';
 import {HeaderComponent} from './header.component';
 import {RouterTestingModule} from "@angular/router/testing";
 import {MatMenuModule} from "@angular/material/menu";
+import {Router} from "@angular/router";
 
 describe('HeaderComponent', () => {
     let component: HeaderComponent;
     let fixture: ComponentFixture<HeaderComponent>;
+    let router = {
+        navigate: jasmine.createSpy('navigate'),
+        navigateByUrl: (url: string) => {
+            return {
+                then: () => {}
+            }
+        }
+    }
 
     beforeEach(async () => {
         await TestBed.configureTestingModule({
+            providers: [{provide: Router, useValue: router}],
             declarations: [HeaderComponent],
             imports: [
                 RouterTestingModule,

Frontend/src/app/components/newest-prices-list/newest-prices-list.component.spec.ts

@@ -8,10 +8,22 @@ import {ApiService} from "../../services/api.service";
 
 class MockApiService extends AbstractMockObservableService {
     getCurrentPricePerVendor() {
+        this.content = [];
         return this;
     }
 
     getVendors() {
+        const vendor = {
+            vendor_id: 1,
+            name: 'Max Mustermann',
+            streetname: 'Musterstraße 69',
+            zip_code: '12345',
+            city: 'Musterhausen',
+            country_code: 'DE',
+            phone: '+49 123 4567890',
+            website: 'https://www.amazon.de',
+        };
+        this.content = [vendor];
         return this;
     }
 }

Frontend/src/app/components/product-details/product-details.component.spec.ts

@@ -30,7 +30,17 @@ class MockApiService extends AbstractMockObservableService {
     }
 
     getVendors() {
-        this.content = [];
+        const vendor = {
+            vendor_id: 1,
+            name: 'Max Mustermann',
+            streetname: 'Musterstraße 69',
+            zip_code: '12345',
+            city: 'Musterhausen',
+            country_code: 'DE',
+            phone: '+49 123 4567890',
+            website: 'https://www.amazon.de',
+        }
+        this.content = [vendor];
         return this;
     }
 }

Frontend/src/app/components/product-list/product-list.component.spec.ts

@@ -6,13 +6,16 @@ import {HeaderComponent} from "../header/header.component";
 import {RouterTestingModule} from "@angular/router/testing";
 import {ApiService} from "../../services/api.service";
 import {AbstractMockObservableService} from "../../mocks/mock.service";
+import {Router} from "@angular/router";
 
 class MockApiService extends AbstractMockObservableService {
     getProducts() {
+        this.content = [];
         return this;
     }
 
     getProductsByQuery() {
+        this.content = [];
         return this;
     }
 }
@@ -21,11 +24,15 @@ describe('ProductListComponent', () => {
     let component: ProductListComponent;
     let fixture: ComponentFixture<ProductListComponent>;
     let mockService;
+    let router = {
+        navigate: jasmine.createSpy('navigate'),
+        routerState: jasmine.createSpy('routerState')
+    }
 
     beforeEach(async () => {
         mockService = new MockApiService();
         await TestBed.configureTestingModule({
-            providers: [{provide: ApiService, useValue: mockService}],
+            providers: [{provide: ApiService, useValue: mockService}, {provide: Router, useValue: router}],
             declarations: [ProductListComponent],
             imports: [
                 RouterTestingModule
@@ -43,4 +50,30 @@ describe('ProductListComponent', () => {
     it('should create', () => {
         expect(component).toBeTruthy();
     });
+
+    it('should load products by search query when type is search', () => {
+        component.type = 'search';
+        component.loadParams();
+        expect(component.products).toBeTruthy();
+    });
+
+    it('should navigate to /product/xyz when navigateImprint() is called', () => {
+        const product = {
+            product_id: 1,
+            asin: 'ASIN',
+            is_active: true,
+            name: 'Super tolles Produkt',
+            short_description: 'Descr',
+            long_description: 'Descr',
+            image_guid: '123',
+            date_added: new Date(),
+            last_modified: new Date(),
+            manufacturer_id: 1,
+            selling_rank: '1',
+            category_id: 1
+        }
+
+        component.clickedProduct(product);
+        expect(router.navigate).toHaveBeenCalledWith(['/product/1']);
+    });
 });

Frontend/src/app/pages/landingpage/landingpage.component.spec.ts

@@ -2,13 +2,19 @@ import {ComponentFixture, TestBed} from '@angular/core/testing';
 
 import {LandingpageComponent} from './landingpage.component';
 import {RouterTestingModule} from "@angular/router/testing";
+import {Router} from "@angular/router";
 
 describe('LandingpageComponent', () => {
     let component: LandingpageComponent;
     let fixture: ComponentFixture<LandingpageComponent>;
+    let router = {
+        navigate: jasmine.createSpy('navigate'),
+        routerState: jasmine.createSpy('routerState')
+    }
 
     beforeEach(async () => {
         await TestBed.configureTestingModule({
+            providers: [{provide: Router, useValue: router}],
             declarations: [LandingpageComponent],
             imports: [
                 RouterTestingModule