public void Constructor_ExpectedValues(double succesProbability)
{
// Call
var distribution = new BooleanProbabilityDistribution(succesProbability);
// Assert
Assert.AreEqual(succesProbability, distribution.SuccessProbability);
Assert.AreEqual(1.0 - succesProbability, distribution.FailureProbability);
}
/// <summary>
/// Initializes a new instance of the <see cref="ThresholdCompare"/> class.
/// </summary>
/// <param name="die">The die whose result should be compared.</param>
/// <param name="comparisonType">How the result of <paramref name="die"/> should be compared.</param>
/// <param name="referenceValue">To what value <paramref name="die"/> should be compared.</param>
/// <param name="rng">The random number generator.</param>
public ThresholdCompare(IAbstractDie die, ComparisonType comparisonType, int referenceValue, IRandomNumberGenerator rng)
{
Debug.Assert(die != null, "The die cannot be null.");
Debug.Assert(
comparisonType == ComparisonType.Greater || comparisonType == ComparisonType.GreaterOrEqual ||
comparisonType == ComparisonType.Smaller || comparisonType == ComparisonType.SmallerOrEqual,
"The comparison type must be a known member.");
Debug.Assert(rng != null, "The random number generator cannot be null.");
this.die = die;
ComparisonType = comparisonType;
ReferenceValue = referenceValue;
this.rng = rng;
double successProbability = CreateProbabilityDistribution(die, comparisonType, referenceValue);
ProbabilityDistribution = new BooleanProbabilityDistribution(successProbability);
Debug.Assert(ProbabilityDistribution != null, "The property ProbabilityDistribution should be initialized.");
}
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);
}
