public void LowerPipe_InputOutput_VerifyNextInvoke()
{
var mock = new Mock <IPipeObject>();
var lower = new Lower();
// Set a mock object to the next pipe
lower.NextPipe = mock.Object;
string input = "HelLo";
// Do the work
lower.Invoke(input);
//Output
string expected = input.ToLower();
// Check if the next pipe's invoke method is called with right parameter
mock.Verify(i => i.Invoke(expected));
mock.VerifyNoOtherCalls();
}
public void OnEventLowered()
{
Lower.Invoke();
}