BETTERZON-83: FE unit testing (#35)

* BETTERZON-83: Making pre-generated unit tests work

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

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

@@ -1,25 +1,42 @@
-import { ComponentFixture, TestBed } from '@angular/core/testing';
+import {ComponentFixture, TestBed} from '@angular/core/testing';
 
-import { FooterComponent } from './footer.component';
+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 component: FooterComponent;
+    let fixture: ComponentFixture<FooterComponent>;
+    let router = {
+        navigate: jasmine.createSpy('navigate'),
+        routerState: jasmine.createSpy('routerState')
+    }
 
-  beforeEach(async () => {
-    await TestBed.configureTestingModule({
-      declarations: [ FooterComponent ]
-    })
-    .compileComponents();
-  });
+    beforeEach(async () => {
+        await TestBed.configureTestingModule({
+            providers: [{provide: Router, useValue: router}],
+            declarations: [FooterComponent],
+            imports: [
+                RouterTestingModule
+            ]
+        })
+            .compileComponents();
+    });
 
-  beforeEach(() => {
-    fixture = TestBed.createComponent(FooterComponent);
-    component = fixture.componentInstance;
-    fixture.detectChanges();
-  });
+    beforeEach(() => {
+        fixture = TestBed.createComponent(FooterComponent);
+        component = fixture.componentInstance;
+        fixture.detectChanges();
+    });
 
-  it('should create', () => {
-    expect(component).toBeTruthy();
-  });
+    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

@@ -1,25 +1,41 @@
-import { ComponentFixture, TestBed } from '@angular/core/testing';
+import {ComponentFixture, TestBed} from '@angular/core/testing';
 
-import { HeaderComponent } from './header.component';
+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 component: HeaderComponent;
+    let fixture: ComponentFixture<HeaderComponent>;
+    let router = {
+        navigate: jasmine.createSpy('navigate'),
+        navigateByUrl: (url: string) => {
+            return {
+                then: () => {}
+            }
+        }
+    }
 
-  beforeEach(async () => {
-    await TestBed.configureTestingModule({
-      declarations: [ HeaderComponent ]
-    })
-    .compileComponents();
-  });
+    beforeEach(async () => {
+        await TestBed.configureTestingModule({
+            providers: [{provide: Router, useValue: router}],
+            declarations: [HeaderComponent],
+            imports: [
+                RouterTestingModule,
+                MatMenuModule
+            ]
+        })
+            .compileComponents();
+    });
 
-  beforeEach(() => {
-    fixture = TestBed.createComponent(HeaderComponent);
-    component = fixture.componentInstance;
-    fixture.detectChanges();
-  });
+    beforeEach(() => {
+        fixture = TestBed.createComponent(HeaderComponent);
+        component = fixture.componentInstance;
+        fixture.detectChanges();
+    });
 
-  it('should create', () => {
-    expect(component).toBeTruthy();
-  });
+    it('should create', () => {
+        expect(component).toBeTruthy();
+    });
 });

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

@@ -1,25 +1,57 @@
-import { ComponentFixture, TestBed } from '@angular/core/testing';
+import {ComponentFixture, TestBed} from '@angular/core/testing';
 
-import { NewestPricesListComponent } from './newest-prices-list.component';
+import {NewestPricesListComponent} from './newest-prices-list.component';
+import {RouterTestingModule} from "@angular/router/testing";
+import {HttpClient} from "@angular/common/http";
+import {AbstractMockObservableService} from "../../mocks/mock.service";
+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;
+    }
+}
 
 describe('NewestPricesListComponent', () => {
-  let component: NewestPricesListComponent;
-  let fixture: ComponentFixture<NewestPricesListComponent>;
+    let component: NewestPricesListComponent;
+    let fixture: ComponentFixture<NewestPricesListComponent>;
+    let mockService;
 
-  beforeEach(async () => {
-    await TestBed.configureTestingModule({
-      declarations: [ NewestPricesListComponent ]
-    })
-    .compileComponents();
-  });
+    beforeEach(async () => {
+        mockService = new MockApiService();
+        await TestBed.configureTestingModule({
+            providers: [{provide: ApiService, useValue: mockService}],
+            declarations: [NewestPricesListComponent],
+            imports: [
+                RouterTestingModule
+            ]
+        })
+            .compileComponents();
+    });
 
-  beforeEach(() => {
-    fixture = TestBed.createComponent(NewestPricesListComponent);
-    component = fixture.componentInstance;
-    fixture.detectChanges();
-  });
+    beforeEach(() => {
+        fixture = TestBed.createComponent(NewestPricesListComponent);
+        component = fixture.componentInstance;
+        fixture.detectChanges();
+    });
 
-  it('should create', () => {
-    expect(component).toBeTruthy();
-  });
+    it('should create', () => {
+        expect(component).toBeTruthy();
+    });
 });

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

@@ -1,25 +1,75 @@
-import { ComponentFixture, TestBed } from '@angular/core/testing';
+import {ComponentFixture, TestBed} from '@angular/core/testing';
 
-import { ProductDetailsComponent } from './product-details.component';
+import {ProductDetailsComponent} from './product-details.component';
+import {RouterTestingModule} from "@angular/router/testing";
+import {AbstractMockObservableService} from "../../mocks/mock.service";
+import {ApiService} from "../../services/api.service";
+import {ChartComponent, NgApexchartsModule} from "ng-apexcharts";
+
+class MockApiService extends AbstractMockObservableService {
+    getProduct() {
+        this.content = {};
+        return this;
+    }
+
+    getLowestPrices() {
+        const price = {
+            price_id: 1,
+            product_id: 1,
+            vendor_id: 1,
+            price_in_cents: 123,
+            timestamp: new Date()
+        };
+        this.content = [price];
+        return this;
+    }
+
+    getAmazonPrice() {
+        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;
+    }
+}
 
 describe('ProductDetailsComponent', () => {
-  let component: ProductDetailsComponent;
-  let fixture: ComponentFixture<ProductDetailsComponent>;
+    let component: ProductDetailsComponent;
+    let fixture: ComponentFixture<ProductDetailsComponent>;
+    let mockService;
 
-  beforeEach(async () => {
-    await TestBed.configureTestingModule({
-      declarations: [ ProductDetailsComponent ]
-    })
-    .compileComponents();
-  });
+    beforeEach(async () => {
+        mockService = new MockApiService();
+        await TestBed.configureTestingModule({
+            providers: [{provide: ApiService, useValue: mockService}],
+            declarations: [ProductDetailsComponent],
+            imports: [
+                RouterTestingModule,
+                NgApexchartsModule
+            ]
+        })
+            .compileComponents();
+    });
 
-  beforeEach(() => {
-    fixture = TestBed.createComponent(ProductDetailsComponent);
-    component = fixture.componentInstance;
-    fixture.detectChanges();
-  });
+    beforeEach(() => {
+        fixture = TestBed.createComponent(ProductDetailsComponent);
+        component = fixture.componentInstance;
+        fixture.detectChanges();
+    });
 
-  it('should create', () => {
-    expect(component).toBeTruthy();
-  });
+    it('should create', () => {
+        expect(component).toBeTruthy();
+    });
 });

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

@@ -47,7 +47,7 @@ export class ProductDetailsComponent implements OnInit {
     }
 
     getProduct(): void {
-        this.apiService.getProduct(this.productId).subscribe(product => this.product = product);
+        this.apiService.getProduct(this.productId).subscribe(product => {this.product = product});
     }
 
     getPrices(): void {

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

@@ -1,25 +1,79 @@
-import { ComponentFixture, TestBed } from '@angular/core/testing';
+import {ComponentFixture, TestBed} from '@angular/core/testing';
 
-import { ProductListComponent } from './product-list.component';
+import {ProductListComponent} from './product-list.component';
+import {FooterComponent} from "../footer/footer.component";
+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;
+    }
+}
 
 describe('ProductListComponent', () => {
-  let component: ProductListComponent;
-  let fixture: ComponentFixture<ProductListComponent>;
+    let component: ProductListComponent;
+    let fixture: ComponentFixture<ProductListComponent>;
+    let mockService;
+    let router = {
+        navigate: jasmine.createSpy('navigate'),
+        routerState: jasmine.createSpy('routerState')
+    }
 
-  beforeEach(async () => {
-    await TestBed.configureTestingModule({
-      declarations: [ ProductListComponent ]
-    })
-    .compileComponents();
-  });
+    beforeEach(async () => {
+        mockService = new MockApiService();
+        await TestBed.configureTestingModule({
+            providers: [{provide: ApiService, useValue: mockService}, {provide: Router, useValue: router}],
+            declarations: [ProductListComponent],
+            imports: [
+                RouterTestingModule
+            ]
+        })
+            .compileComponents();
+    });
 
-  beforeEach(() => {
-    fixture = TestBed.createComponent(ProductListComponent);
-    component = fixture.componentInstance;
-    fixture.detectChanges();
-  });
+    beforeEach(() => {
+        fixture = TestBed.createComponent(ProductListComponent);
+        component = fixture.componentInstance;
+        fixture.detectChanges();
+    });
 
-  it('should create', () => {
-    expect(component).toBeTruthy();
-  });
+    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']);
+    });
 });