public void Can_Check_Author_Exists(string authorId, bool expected)
{
// Arrange
var id = authorId;
if (authorId == "FirstID")
{
id = LookupRepo.GetEntities <Author>().FirstOrDefault()?.Id.ToString();
}
// Act
var result = _authorManager.AuthorExists(id);
// Assert
Assert.Equal(result, expected);
}
