fix

src/app/services/core-service.service.spec.ts

@@ -0,0 +1,12 @@
+import { TestBed } from '@angular/core/testing';
+
+import { CoreServiceService } from './core-service.service';
+
+describe('CoreServiceService', () => {
+  beforeEach(() => TestBed.configureTestingModule({}));
+
+  it('should be created', () => {
+    const service: CoreServiceService = TestBed.get(CoreServiceService);
+    expect(service).toBeTruthy();
+  });
+});

src/app/services/core-service.service.ts

@@ -0,0 +1,9 @@
+import { Injectable } from '@angular/core';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class CoreServiceService {
+
+  constructor() { }
+}

src/app/services/session-data.service.spec.ts

@@ -0,0 +1,12 @@
+import { TestBed } from '@angular/core/testing';
+
+import { SessionDataService } from './session-data.service';
+
+describe('SessionDataService', () => {
+  beforeEach(() => TestBed.configureTestingModule({}));
+
+  it('should be created', () => {
+    const service: SessionDataService = TestBed.get(SessionDataService);
+    expect(service).toBeTruthy();
+  });
+});

src/app/services/session-data.service.ts

@@ -0,0 +1,9 @@
+import { Injectable } from '@angular/core';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class SessionDataService {
+
+  constructor() { }
+}