static void Main(string[] args)
{
HelloWorldWriterType helloWorldWriterType = (HelloWorldWriterType)Enum.Parse(typeof(HelloWorldWriterType), ConfigurationManager.AppSettings["WriterType"] ?? "0");
IHelloWorldWriter writer = HelloWorldWriterFactory.GetInstance(helloWorldWriterType);
writer.Write("Hello World");
Environment.Exit(0);
}
public void GetInstance_Console_ReturnsAConsoleHelloWorldWriter()
{
IHelloWorldWriter writer = null;
writer = HelloWorldWriterFactory.GetInstance(HelloWorldWriterType.Console);
Assert.IsTrue(writer is IHelloWorldWriter);
Assert.IsTrue(writer is ConsoleHelloWorldWriter);
Assert.IsFalse(writer is DataBaseHelloWorldWriter);
}
public void GetInstance_Unkbown_ThrowsAnNotImplementedException()
{
Assert.Throws <NotImplementedException>(() => HelloWorldWriterFactory.GetInstance(HelloWorldWriterType.Unknown));
}
