add BrandService and ProductService with basic HTTP methods and tests

client/src/app/services/brand/brand.service.spec.ts

@@ -0,0 +1,16 @@
+import { TestBed } from '@angular/core/testing';
+
+import { BrandService } from './brand.service';
+
+describe('BrandService', () => {
+  let service: BrandService;
+
+  beforeEach(() => {
+    TestBed.configureTestingModule({});
+    service = TestBed.inject(BrandService);
+  });
+
+  it('should be created', () => {
+    expect(service).toBeTruthy();
+  });
+});

client/src/app/services/brand/brand.service.ts

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+import {inject, Injectable} from '@angular/core';
+import {HttpClient} from '@angular/common/http';
+import {Brand} from '../../models/brand/brand';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class BrandService {
+
+  private readonly http = inject(HttpClient);
+  private readonly BASE_URL = 'http://localhost:3000/brands';
+
+  getBrands() {
+    return this.http.get<Brand[]>(this.BASE_URL, {withCredentials: true});
+  }
+}

client/src/app/services/product/product.service.spec.ts

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+import { TestBed } from '@angular/core/testing';
+
+import { ProductService } from './product.service';
+
+describe('ProductService', () => {
+  let service: ProductService;
+
+  beforeEach(() => {
+    TestBed.configureTestingModule({});
+    service = TestBed.inject(ProductService);
+  });
+
+  it('should be created', () => {
+    expect(service).toBeTruthy();
+  });
+});

client/src/app/services/product/product.service.ts

@@ -0,0 +1,13 @@
+import {inject, Injectable} from '@angular/core';
+import {HttpClient} from '@angular/common/http';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class ProductService {
+
+  private readonly http = inject(HttpClient);
+  private readonly BASE_URL = 'http://localhost:3000/api/products';
+
+  constructor() { }
+}