public void Constructor_ExpectedValues(int referenceValue, ComparisonType comparisonType)
{
// Setup
var rng = MockRepository.GenerateStub <IRandomNumberGenerator>();
var die = MockRepository.GenerateStub <IAbstractDie>();
die.Stub(d => d.ProbabilityDistribution).Return(new DiscreteValueProbabilityDistribution(new[] { new ValueProbabilityPair(1, 1.0) }));
// Call
var thresholdCompare = new ThresholdCompare(die, comparisonType, referenceValue, rng);
// Assert
Assert.IsInstanceOf <IRollable <bool> >(thresholdCompare);
Assert.IsInstanceOf <IDiscreteBooleanRandomVariable>(thresholdCompare);
Assert.AreEqual(referenceValue, thresholdCompare.ReferenceValue);
Assert.AreEqual(comparisonType, thresholdCompare.ComparisonType);
}
public static Predicate <int> CombiningDelegate()
{
var zeroThreshold = new ThresholdCompare {
Threshold = 0
};
var tenThreshold = new ThresholdCompare {
Threshold = 10
};
var hundredThreshold = new ThresholdCompare {
Threshold = 100
};
Predicate <int> megaPredicate = zeroThreshold.IsGreaterThan;
megaPredicate += tenThreshold.IsGreaterThan;
megaPredicate += hundredThreshold.IsGreaterThan;
return(megaPredicate);
}
public static void Example_Instance()
{
var zeroThreshold = new ThresholdCompare {
Threshold = 0
};
var tenThreshold = new ThresholdCompare {
Threshold = 10
};
var hundredThreshold = new ThresholdCompare {
Threshold = 100
};
Predicate <int> greaterThanZero = zeroThreshold.IsGreaterThan;
Predicate <int> greaterThanTen = tenThreshold.IsGreaterThan;
Predicate <int> greaterThanHundred = hundredThreshold.IsGreaterThan;
Console.WriteLine("-1 is greater than zero? " + greaterThanZero(-1));
Console.WriteLine("11 is greater than ten? " + greaterThanTen(11));
Console.WriteLine("1000 is greater than hundred? " + greaterThanHundred(1000));
}
public void Roll_BasedOnProbabilityDistribution_ReturnExpectedResult(ComparisonType comparisonType)
{
// Setup
var spec = new[]
{
new ValueProbabilityPair(1, 0.25),
new ValueProbabilityPair(4, 0.5),
new ValueProbabilityPair(8, 0.25),
};
var die = MockRepository.GenerateStub <IAbstractDie>();
die.Stub(d => d.ProbabilityDistribution).Return(new DiscreteValueProbabilityDistribution(spec));
var rng = new TestingRandomNumberGenerator();
const int referenceValue = 4;
var thresholdCompare = new ThresholdCompare(die, comparisonType, referenceValue, rng);
double successProbability = thresholdCompare.ProbabilityDistribution.SuccessProbability;
var expectedValueAndProbabilities = new[]
{
Tuple.Create(true, 0.0),
Tuple.Create(true, successProbability - 0.1),
Tuple.Create(true, successProbability),
Tuple.Create(false, successProbability + 1e-6),
Tuple.Create(false, successProbability + 0.1),
Tuple.Create(false, 1.0),
};
rng.AddFactorValues(expectedValueAndProbabilities.Select(t => t.Item2));
foreach (Tuple <bool, double> expectedValueAndProbability in expectedValueAndProbabilities)
{
// Call
bool rolledResult = thresholdCompare.Roll();
// Assert
Assert.AreEqual(rolledResult, expectedValueAndProbability.Item1);
}
}
public void ProbabilityDistribution_DieGreaterThanOrEqualToReferenceValue_ReturnExpectedResult(
int referenceValue, double expectedSuccessProbability)
{
// Setup
var rng = MockRepository.GenerateStub <IRandomNumberGenerator>();
var spec = new[]
{
new ValueProbabilityPair(1, 0.25),
new ValueProbabilityPair(4, 0.5),
new ValueProbabilityPair(8, 0.25),
};
var die = MockRepository.GenerateStub <IAbstractDie>();
die.Stub(d => d.ProbabilityDistribution).Return(new DiscreteValueProbabilityDistribution(spec));
var thresholdCompare = new ThresholdCompare(die, ComparisonType.GreaterOrEqual, referenceValue, rng);
// Call
BooleanProbabilityDistribution distribution = thresholdCompare.ProbabilityDistribution;
// Assert
Assert.AreEqual(expectedSuccessProbability, distribution.SuccessProbability);
}
