static void Main(string[] args)
{
IMessageSender sender = new SmsMessageSender();
Message message = new ShortMessage(sender);
message.SendMessage("Hello Friends");
IMessageSender sender2 = new MailMessageSender();
Message message2 = new LongMessage(sender);
message.SendMessage("Email message");
Console.ReadKey();
}
public void Test_message()
{
string longM = "this is a very very very long message...";
string shortM = "short SMS";
IMessageSender smsMessageSender = new SMSMessageSender();
IMessageSender emailMessageSender = new EmailMessageSender();
// Short message
ShortMessage shortMessage = new ShortMessage(smsMessageSender);
{
shortMessage.SendMessage(shortM);
Assert.That(shortMessage.GetMessageSentCount(), Is.EqualTo(1));
shortMessage.SendMessage(shortM);
shortMessage.SendMessage(shortM);
shortMessage.SendMessage(shortM);
shortMessage.SendMessage(shortM);
Assert.That(shortMessage.GetMessageSentCount(), Is.EqualTo(5));
Assert.That(shortMessage.GetSenderType(), Is.EqualTo(SenderType.SMS));
Assert.That(shortMessage.GetSenderType(), !Is.EqualTo(SenderType.Email));
}
// Null message
{
var ex = Assert.Throws <ArgumentNullException>(() => { shortMessage.SendMessage(string.Empty); });
Assert.That(ex.Message, Is.EqualTo("Invalid message. (Parameter 'message')"));
}
// Long message
{
var ex = Assert.Throws <ArgumentException>(() => { shortMessage.SendMessage(longM); });
Assert.That(ex.Message, Is.EqualTo("Invalid message: message is too long. (Parameter 'message')"));
}
// Long message
LongMessage longMessage = new LongMessage(emailMessageSender);
{
longMessage.SendMessage(longM);
Assert.That(longMessage.GetMessageSentCount(), Is.EqualTo(1));
longMessage.SendMessage(longM);
longMessage.SendMessage(longM);
Assert.That(longMessage.GetMessageSentCount(), Is.EqualTo(3));
Assert.That(longMessage.GetSenderType(), !Is.EqualTo(SenderType.SMS));
Assert.That(longMessage.GetSenderType(), Is.EqualTo(SenderType.Email));
}
// Null message
{
var ex = Assert.Throws <ArgumentNullException>(() => { longMessage.SendMessage(string.Empty); });
Assert.That(ex.Message, Is.EqualTo("Invalid message. (Parameter 'message')"));
}
// Short message
{
var ex = Assert.Throws <ArgumentException>(() => { longMessage.SendMessage(shortM); });
Assert.That(ex.Message, Is.EqualTo("Invalid message: message is too short. (Parameter 'message')"));
}
}