public void ChooseWithLastChoiceByOpponentIsNoneReturnsCooperate()
{
// Arrange
var strategy = new TitForTatCooperationStrategy();
// Act
var choice = strategy.Choose(CooperationChoice.None);
// Assert
Assert.Equal(CooperationChoice.Cooperate, choice);
}
public void PlayWithNullLastMatchupResultThrowsArgumentNullException()
{
// Arrange
var strategyA = new TitForTatCooperationStrategy();
var strategyB = new TitForTatCooperationStrategy();
var cooperationChoicePayoff = new CooperationChoicesPayoff();
var cooperationStrategyMatchup = new CooperationStrategyMatchup(strategyA, strategyB, cooperationChoicePayoff);
CooperationStrategyMatchupResult nullLastMatchupResult = null;
// Act
// Assert
Assert.Throws<ArgumentNullException>(() => cooperationStrategyMatchup.Play(nullLastMatchupResult));
}
public void PlayWithLastMatchupResultReturnsCorrectCooperationStrategyMatchupResultForStrategyB()
{
// Arrange
var strategyA = new TitForTatCooperationStrategy();
var strategyB = new TitForTatCooperationStrategy();
var cooperationChoicePayoff = new CooperationChoicesPayoff();
var cooperationStrategyMatchup = new CooperationStrategyMatchup(strategyA, strategyB, cooperationChoicePayoff);
var lastMatchupResult = new CooperationStrategyMatchupResult(
new CooperationStrategyResult
{
Strategy = strategyA,
ChoiceMade = CooperationChoice.Cooperate,
Payoff =
cooperationChoicePayoff.Calculate(
CooperationChoice.Cooperate, CooperationChoice.Cooperate),
},
new CooperationStrategyResult
{
Strategy = strategyB,
ChoiceMade = CooperationChoice.Cooperate,
Payoff =
cooperationChoicePayoff.Calculate(
CooperationChoice.Cooperate, CooperationChoice.Cooperate),
});
// Act
var cooperationStrategyMatchupResult = cooperationStrategyMatchup.Play(lastMatchupResult);
// Assert
var correctCooperationStrategyResultForStrategyB = new CooperationStrategyResult
{
Strategy = strategyB,
ChoiceMade = CooperationChoice.Cooperate,
Payoff = CooperationChoicesPayoff.DefaultPayoffForCooperateAndCooperate
};
Assert.Equal(correctCooperationStrategyResultForStrategyB, cooperationStrategyMatchupResult.StrategyBResult);
}
