public void Setup() { mapperMock = new Mock <IMapper>(); List <Book> books = new List <Book> { BookTestData.BookDummy() }; dbContextMock = new Mock <IDataContext>(); dbContextMock.Setup(p => p.Books).Returns(DbContextMock.GetQueryableMockDbSet <Book>(books)); dbContextMock.Setup(p => p.SaveChanges()).Returns(1); }