/// <summary>
/// Initializes a new instance of the <see cref="CooperationStrategyMatchupResult"/> class.
/// </summary>
/// <param name="strategyAResult">The result for strategy A.</param>
/// <param name="strategyBResult">The result for strategy B.</param>
public CooperationStrategyMatchupResult(
CooperationStrategyResult strategyAResult, CooperationStrategyResult strategyBResult)
{
Requires.NotNull(strategyAResult, "strategyAResult");
Requires.NotNull(strategyBResult, "strategyBResult");
this.StrategyAResult = strategyAResult;
this.StrategyBResult = strategyBResult;
}
public void ConstructorWithNullStrategyBChoiceThrowsArgumentNullException()
{
// Arrange
var strategyAResult = new CooperationStrategyResult();
CooperationStrategyResult nullStrategyBResult = null;
// Act
// Assert
Assert.Throws<ArgumentNullException>(() => new CooperationStrategyMatchupResult(strategyAResult, nullStrategyBResult));
}
public void StrategyBChoiceReturnsStrategyAChoideASuppliedToConstructor()
{
var strategyAResult = new CooperationStrategyResult();
var strategyBResult = new CooperationStrategyResult();
// Act
var matchupResult = new CooperationStrategyMatchupResult(strategyAResult, strategyBResult);
// Assert
Assert.Equal(strategyBResult, matchupResult.StrategyBResult);
}
public void EqualsWithEqualPayoffReturnsTrue()
{
// Arrange
var cooperationStrategyResult = new CooperationStrategyResult { Payoff = CooperationChoicesPayoff.DefaultPayoffForDefectAndDefect };
object equalCooperationStrategyResult = new CooperationStrategyResult { Payoff = CooperationChoicesPayoff.DefaultPayoffForDefectAndDefect };
// Act
var objectsAreEqual = cooperationStrategyResult.Equals(equalCooperationStrategyResult);
// Assert
Assert.True(objectsAreEqual);
}
public void EqualsWithEqualObjectReturnsTrue()
{
// Arrange
var cooperationStrategyResult = new CooperationStrategyResult();
var equalCooperationStrategyResult = new CooperationStrategyResult();
// Act
var objectsAreEqual = cooperationStrategyResult.Equals((object)equalCooperationStrategyResult);
// Assert
Assert.True(objectsAreEqual);
}
public void EqualsWithEqualChoiceMadeReturnsTrue()
{
// Arrange
var cooperationStrategyResult = new CooperationStrategyResult { ChoiceMade = CooperationChoice.Cooperate };
object equalCooperationStrategyResult = new CooperationStrategyResult { ChoiceMade = CooperationChoice.Cooperate };
// Act
var objectsAreEqual = cooperationStrategyResult.Equals(equalCooperationStrategyResult);
// Assert
Assert.True(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 GetHashCodeWithUnchangedNewInstancesReturnsEqualHashCodes()
{
// Arrange
var cooperationStrategyResult = new CooperationStrategyResult();
var otherCooperationStrategyResult = new CooperationStrategyResult();
// Act
var hashCode = cooperationStrategyResult.GetHashCode();
var otherHashCode = otherCooperationStrategyResult.GetHashCode();
// Assert
Assert.Equal(hashCode, otherHashCode);
}
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 GetHashCodeWithDifferentPayoffReturnsDifferentHashCodes()
{
// Arrange
var cooperationStrategyResult = new CooperationStrategyResult { Payoff = CooperationChoicesPayoff.DefaultPayoffForCooperateAndDefect };
var otherCooperationStrategyResult = new CooperationStrategyResult { Payoff = CooperationChoicesPayoff.DefaultPayoffForDefectAndCooperate };
// Act
var hashCode = cooperationStrategyResult.GetHashCode();
var otherHashCode = otherCooperationStrategyResult.GetHashCode();
// Assert
Assert.NotEqual(hashCode, otherHashCode);
}
public void GetHashCodeWithDifferentCooperationStrategiesReturnsDifferentHashCodes()
{
// Arrange
var cooperationStrategyResult = new CooperationStrategyResult { Strategy = new NaiveCooperationStrategy() };
var otherCooperationStrategyResult = new CooperationStrategyResult { Strategy = new EvilCooperationStrategy() };
// Act
var hashCode = cooperationStrategyResult.GetHashCode();
var otherHashCode = otherCooperationStrategyResult.GetHashCode();
// Assert
Assert.NotEqual(hashCode, otherHashCode);
}
public void GetHashCodeWithDifferentChoiceMadeReturnsDifferentHashCodes()
{
// Arrange
var cooperationStrategyResult = new CooperationStrategyResult { ChoiceMade = CooperationChoice.Cooperate };
var otherCooperationStrategyResult = new CooperationStrategyResult { ChoiceMade = CooperationChoice.Defect };
// Act
var hashCode = cooperationStrategyResult.GetHashCode();
var otherHashCode = otherCooperationStrategyResult.GetHashCode();
// Assert
Assert.NotEqual(hashCode, otherHashCode);
}
public void EqualsWithUnequalCooperationStrategyResultInstancesReturnsFalse()
{
// Arrange
var cooperationStrategyResult = new CooperationStrategyResult { Strategy = new NaiveCooperationStrategy() };
var unequalCooperationStrategyResult = new CooperationStrategyResult { Strategy = new NaiveCooperationStrategy() };
// Act
var objectsAreEqual = cooperationStrategyResult.Equals(unequalCooperationStrategyResult);
// Assert
Assert.False(objectsAreEqual);
}
public void EqualsWithUnequalChoiceMadeReturnsFalse()
{
// Arrange
var cooperationStrategyResult = new CooperationStrategyResult { ChoiceMade = CooperationChoice.Cooperate };
var unequalCooperationStrategyResult = new CooperationStrategyResult { ChoiceMade = CooperationChoice.Defect };
// Act
var objectsAreEqual = cooperationStrategyResult.Equals(unequalCooperationStrategyResult);
// Assert
Assert.False(objectsAreEqual);
}
public void EqualsWithUnchangedNewObjectInstancesReturnsTrue()
{
// Arrange
var cooperationStrategyResult = new CooperationStrategyResult();
var otherCooperationStrategyResult = new CooperationStrategyResult();
// Act
var objectsAreEqual = cooperationStrategyResult.Equals((object)otherCooperationStrategyResult);
// Assert
Assert.True(objectsAreEqual);
}
public void EqualsWithStrategyThatIsSameInstanceReturnsTrue()
{
// Arrange
var cooperationStrategyResult = new CooperationStrategyResult();
// Act
var objectsAreEqual = cooperationStrategyResult.Equals(cooperationStrategyResult);
// 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);
}
public void GetHashCodeWithNullStrategyDoesNotThrowException()
{
// Arrange
var cooperationStrategyResult = new CooperationStrategyResult { Strategy = null };
// Act
cooperationStrategyResult.GetHashCode();
// Assert
}
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);
}
public void EqualsWithNullObjectReturnsFalse()
{
// Arrange
var cooperationStrategyResult = new CooperationStrategyResult();
CooperationStrategyResult comparisonCooperationStrategyResult = null;
// Act
var objectsAreEqual = cooperationStrategyResult.Equals((object)comparisonCooperationStrategyResult);
// Assert
Assert.False(objectsAreEqual);
}