let masterService: MasterService;
let valueServiceSpy: jasmine.SpyObj<ValueService>;

beforeEach(() => {
  const spy = jasmine.createSpyObj('ValueService', ['getValue']);

  TestBed.configureTestingModule({
    // Provide both the service-to-test and its (spy) dependency
    providers: [
      MasterService,
      { provide: ValueService, useValue: spy }
    ]
  });
  // Inject both the service-to-test and its (spy) dependency
  masterService = TestBed.inject(MasterService);
  valueServiceSpy = TestBed.inject(ValueService);
});

 valueServiceSpy = TestBed.inject(ValueService);

Error:(35, 5) TS2322: Type 'ValueService' is not assignable to type 'SpyObj<ValueService>'.
  Type 'ValueService' is not assignable to type '{ testMethod: (() => string) & Spy<() => string>; }'.
    Types of property 'testMethod' are incompatible.
      Type '() => string' is not assignable to type '(() => string) & Spy<() => string>'.
        Type '() => string' is missing the following properties from type 'Spy<() => string>': and, calls, withArgs