public static void Should_add_an_item_in_hashtable()
        {
            // arrange
            var hashtable = new Hashtable <string>();
            var item      = "oi";

            // act
            hashtable.Add(item);

            // assert
            Assert.Equal(1, hashtable.Count());
            Assert.True(hashtable.Exist(item));
        }
        public static void Should_remove_an_item_in_hashtable()
        {
            // arrange
            var hashtable = new Hashtable <string>();
            var item      = "oi";

            hashtable.Add(item);

            // act
            hashtable.Remove(item);

            // assert
            Assert.Equal(0, hashtable.Count());
            Assert.False(hashtable.Exist(item));
        }
 //Busca quantidade de médicos
 public int CountDoctor()
 {
     return(_doctors.Count());
 }
 //Busca quantidade de clientes
 public int CountCustomer()
 {
     return(_customers.Count());
 }