public TimeRegistrationServiceTests() { var builder = new DbContextOptionsBuilder <SimpleProjectTimeTrackerDbContext>(); builder.UseInMemoryDatabase(Guid.NewGuid().ToString()); Options = builder.Options; DbContext = new SimpleProjectTimeTrackerDbContext(builder.Options); DbContext.Database.EnsureCreated(); DbContext.SeedDatabase(); var config = new MapperConfiguration(cfg => { cfg.AddProfile(new MappingProfile()); }); Mapper = config.CreateMapper(); Sut = new TimeRegistrationService(DbContext, Mapper); }