public void AddAuthor()
{
// Arrange
//var context = new BookRankingDbContext(DbConnectionFactory.CreateTransient());
var context = new Mock <IBookRankingDbContext>();
var mockMapper = new Mock <IMapper>();
var authorDTOMock = new Mock <AuthorDTO>();
var authorMock = new Mock <Author>();
mockMapper.Setup(m => m.Map <Author>(authorDTOMock.Object)).Returns(authorMock.Object);
var authors = new FakeDbSet <Author>();
context.Setup(c => c.Authors).Returns(authors);
var service = new AuthorService(context.Object, mockMapper.Object);
// Act
service.AddAuthor(authorDTOMock.Object);
// Assert
Assert.IsTrue(context.Object.Authors.Contains(authorMock.Object));
}