public void GetRandomWeightedItem_WithCollection_ReturnsCorrectItem(int randomNumber, int expectedItem)
{
var mockRandomNumberGenerator = new Mock <IRandomNumberGenerator>();
mockRandomNumberGenerator.Setup(x => x.GetRandomInteger(6)).Returns(randomNumber);
var randomItemSelector = new RandomItemSelector(mockRandomNumberGenerator.Object);
var items = new WeightedItem[]
{
new WeightedItem {
RandomizationWeight = 1
},
new WeightedItem {
RandomizationWeight = 2
},
new WeightedItem {
RandomizationWeight = 3
},
};
var item = randomItemSelector.GetRandomWeightedItem <WeightedItem>(items);
Assert.AreEqual(items[expectedItem], item);
mockRandomNumberGenerator.Verify(x => x.GetRandomInteger(6), Times.Once);
mockRandomNumberGenerator.VerifyNoOtherCalls();
}
private CharacterNameGenerator CreateCharacterNameGenerator(AncestryDetailsModel detailModel)
{
var mockRepository = new Mock <ICharacterNameRepository>();
mockRepository.Setup(x => x.GetAncestry(detailModel.Code)).ReturnsAsync(detailModel);
var rng = new RandomNumberGenerator();
var ris = new RandomItemSelector(rng);
var mockNumberGenerator = new Mock <IRandomNumberGenerator>();
var generator = new CharacterNameGenerator(mockRepository.Object, ris, rng);
return(generator);
}
public static void Main()
{
const int N = 100;
// Example #1
int[] allNumbers = new int[N];
for (int i = 0; i < allNumbers.Length; ++i)
{
allNumbers[i] = i + 1;
}
int[] excludedNumbers = { 5, 7, 17, 23 };
Console.WriteLine(RandomItemSelector.SelectRandomElement(allNumbers, excludedNumbers));
// Example #2
List <string> allStrings = new List <string>();
for (int i = 0; i < N; ++i)
{
allStrings.Add("Item #" + (i + 1));
}
string[] excludedStrings = { "Item #5", "Item #7", "Item #17", "Item #23" };
Console.WriteLine(RandomItemSelector.SelectRandomElement(allStrings, excludedStrings));
}
public void GetRandomWeightedItem_WithEmptyArray_Throws()
{
var randomItemSelector = new RandomItemSelector(new RandomNumberGenerator());
Assert.Throws <ArgumentException>(() => randomItemSelector.GetRandomWeightedItem <WeightedItem>(new WeightedItem[0]));
}
public RandomCrystalPositionGenerator()
{
selector = new RandomItemSelector(5);
}
