public void TestGetBookByID1()
{
int ID_Book = -1000;
BooksDAL bo = new BooksDAL();
Assert.Null(bo.GetBookById(ID_Book));
}
public Books GetBookById(int ID_Book)
{
return(B_BL.GetBookById(ID_Book));
}
public void TestGetBookByID(int ID_Book)
{
BooksDAL book = new BooksDAL();
Assert.NotNull(book.GetBookById(ID_Book));
}