public static void Main()
        {
            Battery bl5c      = new Battery("BL-5C", 300, 33, BatteryType.NiMH);
            GSM     nokia1100 = new GSM("1100", "NOKIA", 100, "Ivan Ivanov", bl5c, 1.3f);

            Console.WriteLine(nokia1100);

            GSM galayA5 = new GSM("Galaxy A5", "Samsung", 779.90f, "Penka Petkova", new Battery("2300mAh integrated", 100, 2300, BatteryType.LiPol), 4.5f);

            Console.WriteLine(galayA5);

            Battery iPhoneBat = new Battery("iPhone bat", 200, 2000, BatteryType.LiIon);
            GSM     iPhone    = new GSM("iPhone4S", "Apple", 1000f, "Happy Iphone Owner", iPhoneBat, 3.5f);

            Console.WriteLine(iPhone);
            GSM  lgA390 = new GSM("A390-Dual SIM", "LG", 115, "Kirov", new Battery("1700 mAh", 800, 1700, BatteryType.LiIon), 2.1f);
            Call call1  = new Call("10.10.14", "10:05", "088812346", 18);
            Call cal2   = new Call(DateTime.Now, "0899999999", 150);
            Call cal3   = new Call();

            lgA390.AddCall(call1);
            lgA390.AddCall(cal2);
            lgA390.AddCall(cal3);
            Console.WriteLine(lgA390);
            Console.WriteLine(lgA390.CalcCallsPrice(0.37f));

            //new GSM(" ", " ");
            //call1.CallTime = null;
            //bl5c.Capacity = -1;
            //iPhone.DisplaySize = -1;
        }
        public static void Main()
        {
            Battery bl5c = new Battery("BL-5C", 300, 33, BatteryType.NiMH);
            GSM nokia1100 = new GSM("1100", "NOKIA", 100, "Ivan Ivanov", bl5c, 1.3f);
            Console.WriteLine(nokia1100);

            GSM galayA5 = new GSM("Galaxy A5", "Samsung", 779.90f, "Penka Petkova", new Battery("2300mAh integrated", 100, 2300, BatteryType.LiPol), 4.5f);
            Console.WriteLine(galayA5);

            Battery iPhoneBat = new Battery("iPhone bat", 200, 2000, BatteryType.LiIon);
            GSM iPhone = new GSM("iPhone4S", "Apple", 1000f, "Happy Iphone Owner", iPhoneBat, 3.5f);
            Console.WriteLine(iPhone);
            GSM lgA390 = new GSM("A390-Dual SIM", "LG", 115, "Kirov", new Battery("1700 mAh", 800, 1700, BatteryType.LiIon), 2.1f);
            Call call1 = new Call("10.10.14", "10:05", "088812346", 18);
            Call cal2 = new Call(DateTime.Now, "0899999999", 150);
            Call cal3 = new Call();
            lgA390.AddCall(call1);
            lgA390.AddCall(cal2);
            lgA390.AddCall(cal3);
            Console.WriteLine(lgA390);
            Console.WriteLine(lgA390.CalcCallsPrice(0.37f));

            //new GSM(" ", " ");
            //call1.CallTime = null;
            //bl5c.Capacity = -1;
            //iPhone.DisplaySize = -1;
        }
 public void GSMCalls_ShouldStoreZeroCallsAndCalculatePrice0()
 {
     Battery battery=new Battery("BL-5C", 200, 1700, BatteryType.LiIon);
     GSM phone = new GSM("Samsung", "Galaxy 4", 550.34f, "Dimitar", battery, 5.0f);
     phone.AddCall(new Call());
     var result = phone.CalcCallsPrice(1.0f);
     float expected = 0.0f;
     Assert.AreEqual(expected, result, "Zero call should have price 0");
 }
        public void MyTestMethod()
        {
            Battery battery = new Battery("BL-5C", 200, 1700, BatteryType.LiIon);
            GSM phone = new GSM("Nokia", "1100", 100f, "Dimitar", battery, 1.5f);
            float callPrice = 2f;
            float expected = 0f;
            CallsGenerator calls=new CallsGenerator();
            for (int i = 0; i < calls.Calls.Length ; i++)
            {
                phone.AddCall(calls.Calls[i]);
                expected += calls.Calls[i].CallDuration / 60f;
            }

            expected *= callPrice;
            float result = phone.CalcCallsPrice(callPrice);
            Assert.AreEqual(expected, result, "All calls price should be correct "+expected);
        }