public static void Main() { GSMTest.Init(); GSMTest.Check_Correct_ToString(); GSMTest.Check_Correct_IPhone4S_Info(); GSMCallHistoryTest.Init(); GSMCallHistoryTest.Display_Calls_Info(); GSMCallHistoryTest.Check_Correct_Calculate_Calls(); GSMCallHistoryTest.Check_Remove_Longest_And_Calculate_Calls(); GSMCallHistoryTest.Check_Clear_Call_History(); }