public void ChooseWithLastChoiceByOpponentIsNoneReturnsDefect()
{
// Arrange
var strategy = new EvilCooperationStrategy();
// Act
var choice = strategy.Choose(CooperationChoice.None);
// Assert
Assert.Equal(CooperationChoice.Defect, choice);
}
public void ConstructorWithNullStrategyAThrowsArgumentNullException()
{
// Arrange
CooperationStrategy nullStrategyA = null;
var strategyB = new EvilCooperationStrategy();
var cooperationChoicePayoff = new CooperationChoicesPayoff();
// Act
// Assert
Assert.Throws<ArgumentNullException>(() => new CooperationStrategyMatchup(nullStrategyA, strategyB, 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 EqualsWithUnequalStrategyBReturnsFalse()
{
// Arrange
var strategyA = new EvilCooperationStrategy();
var cooperationChoicesPayoff = new CooperationChoicesPayoff();
var cooperationStrategyMatchup = new CooperationStrategyMatchup(strategyA, new NaiveCooperationStrategy(), cooperationChoicesPayoff);
var unequalCooperationStrategyMatchup = new CooperationStrategyMatchup(strategyA, new EvilCooperationStrategy(), cooperationChoicesPayoff);
// Act
var objectsAreEqual = cooperationStrategyMatchup.Equals(unequalCooperationStrategyMatchup);
// Assert
Assert.False(objectsAreEqual);
}
public void EqualsWithSameObjectInstanceReturnsTrue()
{
// Arrange
var strategy = new EvilCooperationStrategy();
// Act
var objectsAreEqual = strategy.Equals((object)strategy);
// Assert
Assert.True(objectsAreEqual);
}
