public void shouldReturnTrueIfCommandsValidForRCommand()
{
RoverEngine roverEngine = new RoverEngine();
bool isValid = roverEngine.isCommandValid('R');
Assert.True(isValid);
}
public void shouldReturnFalseIfCommandsNotValid()
{
RoverEngine roverEngine = new RoverEngine();
bool isValid = roverEngine.isCommandValid('P');
Assert.False(isValid);
}