public void ChangeState()
{
TestStateMachine stateMachine = new TestStateMachine();
stateMachine.Start();
stateMachine.StartMachine();
Assert.That(stateMachine.GetState(), Is.EqualTo(StateMachineTestStates.Initial));
stateMachine.ChangeState(StateMachineTestStates.State);
Assert.That(stateMachine.GetState(), Is.EqualTo(StateMachineTestStates.State));
stateMachine.StopMachine();
stateMachine.StartMachine();
Assert.That(stateMachine.GetState(), Is.EqualTo(StateMachineTestStates.Initial));
}