adding integration tests for festival service

web/src/app/integration-tests/festivals.service.integration.spec.ts

@@ -0,0 +1,55 @@
+// festivals.service.integration.spec.ts
+import { TestBed } from '@angular/core/testing';
+import { HttpClientTestingModule, HttpTestingController } from '@angular/common/http/testing';
+
+import { FestivalDataService } from '../core/data-services/festival-data.service';
+import { FestivalBand } from '../core/models/festival.model';
+import {FestivalsService} from "../festivals/festivals.service";
+
+describe('FestivalsService Integration', () => {
+  let service: FestivalsService;
+  let httpTestingController: HttpTestingController;
+
+  beforeEach(() => {
+    TestBed.configureTestingModule({
+      imports: [HttpClientTestingModule],
+      providers: [
+        FestivalsService,
+        FestivalDataService
+      ]
+    });
+
+    service = TestBed.inject(FestivalsService);
+    httpTestingController = TestBed.inject(HttpTestingController);
+  });
+
+  it('should test the model structure and types from the service', () => {
+    const testData: Array<{ name: string, bands: Array<{ name: string }> }> = [
+      { name: 'Any Festival', bands: [{ name: 'Any Band 1' }, { name: 'Any Band 2' }] },
+      { name: 'Another Festival', bands: [{ name: 'Any Band A' }, { name: 'Any Band B' }] }
+    ];
+
+    service.getFestivalsData().subscribe((festivalBands: FestivalBand[]) => {
+      expect(Array.isArray(festivalBands)).toBe(true);
+
+      festivalBands.forEach(band => {
+        expect(band).toEqual(jasmine.objectContaining({
+          bandName: jasmine.any(String),
+          festivalName: jasmine.any(String)
+        }));
+      });
+    });
+
+    const req = httpTestingController.expectOne((request) => true); // This is a simple catch-all for demo purposes.
+
+    expect(req.request.method).toEqual('GET');
+
+    req.flush(testData, { status: 200, statusText: 'OK' });
+
+    httpTestingController.verify();
+  });
+
+  afterEach(() => {
+    httpTestingController.verify();
+  });
+});