public void ChooseWithLastChoiceByOpponentIsNoneReturnsCooperate()
{
// Arrange
var strategy = new NaiveCooperationStrategy();
// Act
var choice = strategy.Choose(CooperationChoice.None);
// Assert
Assert.Equal(CooperationChoice.Cooperate, choice);
}
public void StrategyReturnsStrategySuppliedToConstructor()
{
// Arrange
var cooperationStrategy = new NaiveCooperationStrategy();
// Act
var cooperationStrategyFitness = new CooperationStrategyFitness(cooperationStrategy, 0);
// Assert
Assert.Equal(cooperationStrategy, cooperationStrategyFitness.Strategy);
}
public void ConstructorWithNullStrategyBThrowsArgumentNullException()
{
// Arrange
var strategyA = new NaiveCooperationStrategy();
CooperationStrategy nullStrategyB = null;
var cooperationChoicePayoff = new CooperationChoicesPayoff();
// Act
// Assert
Assert.Throws<ArgumentNullException>(() => new CooperationStrategyMatchup(strategyA, nullStrategyB, cooperationChoicePayoff));
}
public void CooperationChoicePayoffsReturnsCooperationChoicePayoffsSuppliedToConstructor()
{
// Arrange
var strategyA = new NaiveCooperationStrategy();
var strategyB = new EvilCooperationStrategy();
var cooperationChoicePayoff = new CooperationChoicesPayoff();
// Act
var cooperationStrategyMatchup = new CooperationStrategyMatchup(strategyA, strategyB, cooperationChoicePayoff);
// Assert
Assert.Equal(cooperationChoicePayoff, cooperationStrategyMatchup.CooperationChoicesPayoff);
}
public void CooperationStrategyMatchupReturnsCooperationStrategyMatchupSuppliedToConstructor()
{
// Arrange
var strategyA = new NaiveCooperationStrategy();
var strategyB = new EvilCooperationStrategy();
var cooperationChoicePayoff = new CooperationChoicesPayoff();
var matchup = new CooperationStrategyMatchup(strategyA, strategyB, cooperationChoicePayoff);
// Act
var simulation = new CooperationStrategyMatchupSimulation(matchup);
// Assert
Assert.Equal(matchup, simulation.Matchup);
}
public void PlayReturnsCorrectCooperationStrategyMatchupResultForStrategyB()
{
// Arrange
var strategyA = new NaiveCooperationStrategy();
var strategyB = new EvilCooperationStrategy();
var cooperationChoicePayoff = new CooperationChoicesPayoff();
var cooperationStrategyMatchup = new CooperationStrategyMatchup(strategyA, strategyB, cooperationChoicePayoff);
// Act
var cooperationStrategyMatchupResult = cooperationStrategyMatchup.Play();
// Assert
var correctCooperationStrategyResultForStrategyB = new CooperationStrategyResult
{
Strategy = strategyB,
ChoiceMade = CooperationChoice.Defect,
Payoff = CooperationChoicesPayoff.DefaultPayoffForDefectAndCooperate,
};
Assert.Equal(correctCooperationStrategyResultForStrategyB, cooperationStrategyMatchupResult.StrategyBResult);
}
public void EqualsWithUnequalCooperationChoicesPayoffReturnsFalse()
{
// Arrange
var strategyA = new NaiveCooperationStrategy();
var strategyB = new EvilCooperationStrategy();
var cooperationStrategyMatchup = new CooperationStrategyMatchup(strategyA, strategyB, new CooperationChoicesPayoff());
var unequalCooperationStrategyMatchup = new CooperationStrategyMatchup(strategyA, strategyB, new CooperationChoicesPayoff { PayoffForCooperateAndCooperate = 20 });
// Act
var objectsAreEqual = cooperationStrategyMatchup.Equals(unequalCooperationStrategyMatchup);
// Assert
Assert.False(objectsAreEqual);
}
public void EqualsWithEqualStrategyReturnsTrue()
{
// Arrange
var strategy = new NaiveCooperationStrategy();
var cooperationStrategyResult = new CooperationStrategyResult { Strategy = strategy };
object equalCooperationStrategyResult = new CooperationStrategyResult { Strategy = strategy };
// Act
var objectsAreEqual = cooperationStrategyResult.Equals(equalCooperationStrategyResult);
// Assert
Assert.True(objectsAreEqual);
}
public void GetHashCodeWithEqualValuesReturnsEqualHashCodes()
{
// Arrange
var strategy = new NaiveCooperationStrategy();
var cooperationStrategyResult = new CooperationStrategyResult { Strategy = strategy, ChoiceMade = CooperationChoice.Defect, Payoff = CooperationChoicesPayoff.DefaultPayoffForDefectAndDefect };
var otherCooperationStrategyResult = new CooperationStrategyResult { Strategy = strategy, ChoiceMade = CooperationChoice.Defect, Payoff = CooperationChoicesPayoff.DefaultPayoffForDefectAndDefect };
// Act
var hashCode = cooperationStrategyResult.GetHashCode();
var otherHashCode = otherCooperationStrategyResult.GetHashCode();
// Assert
Assert.Equal(hashCode, otherHashCode);
}