test: Added mock tests on guest-profile (#16)

client/src/app/users/user-guest-profile/user-guest-profile.component.spec.ts

+import { HttpClientTestingModule } from '@angular/common/http/testing';
 import { ComponentFixture, TestBed } from '@angular/core/testing';
-
+import { ActivatedRoute } from '@angular/router';
+import { RouterTestingModule } from '@angular/router/testing';
+import { User } from 'src/app/models/user.model';
+import { UserService } from '../user.service';
 import { UserGuestProfileComponent } from './user-guest-profile.component';
 
 describe('UserGuestProfileComponent', () => {
   let component: UserGuestProfileComponent;
   let fixture: ComponentFixture<UserGuestProfileComponent>;
-
+  let mockPostService;
+  const dateNow = new Date();
+  
   beforeEach(async () => {
+    // UserService mock setup
+    mockPostService = jasmine.createSpyObj(['getUser']);
+    mockPostService.getUser.and.returnValue(
+      new Promise<User>(
+        (resolve) => {
+          resolve(new User({
+            userId: 1,
+            username: "Test",
+            email: "test@email.com",
+            password: "testPassword",
+            create_time: dateNow,
+          }));
+        })
+    );
+
     await TestBed.configureTestingModule({
-      declarations: [ UserGuestProfileComponent ]
+      declarations: [ UserGuestProfileComponent ],
+      imports: [ HttpClientTestingModule, RouterTestingModule ],
+      providers: [
+        { provide: ActivatedRoute, useValue: { snapshot: {params: {id: 1}}}},
+        { provide: UserService, useValue: mockPostService }
+      ]
     })
     .compileComponents();
   });
@@ -22,4 +48,20 @@ describe('UserGuestProfileComponent', () => {
   it('should create', () => {
     expect(component).toBeTruthy();
   });
-});
+
+  it('should get user with id from url parameter', async () => {
+    // Waits for ngOnInit and checks that we get user
+    expect(component.user).not.toBeNull();
+
+    fixture.whenStable().then(() => {
+      expect(mockPostService.getUser).toHaveBeenCalledWith(1);
+      expect(component.user).toEqual(new User({
+        userId: 1,
+        username: "Test",
+        email: "test@email.com",
+        password: "testPassword",
+        create_time: dateNow,
+      }));
+    });
+  });
+});
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