public void PutOnHold_Args()
{
// Setup
var sut = new ProcessingState("proja", _env.Settings)
{
SRState = ProcessingState.SendReceiveStates.IDLE
};
// Exercise
sut.PutOnHold("{0} {1}{2}", "Hello", "World", "!");
// Verify
Assert.That(sut.SRState, Is.EqualTo(ProcessingState.SendReceiveStates.HOLD));
Assert.That(sut.ErrorCode, Is.EqualTo((int)ProcessingState.ErrorCodes.Unspecified));
Assert.That(sut.ErrorMessage, Is.EqualTo("Hello World!"));
}