public void ShouldReturnNumberInSingleNumberArray()
{
int[] numbers = new int[] { 1 };
UniqueRandomNumberGenerator g = new UniqueRandomNumberGenerator(numbers);
int number = 0;
while (g.RemainingNumbersCount > 0)
{
number = g.NewRandomNumber();
}
int expected = numbers[0];
int actual = number;
Assert.AreEqual(expected, actual);
}
public void ShouldReturnNumberInSingleNumberRange()
{
int minNumber = 2;
int maxNumber = 2;
UniqueRandomNumberGenerator g = new UniqueRandomNumberGenerator(minNumber, maxNumber);
int number = 0;
while (g.RemainingNumbersCount > 0)
{
number = g.NewRandomNumber();
}
int expected = minNumber;
int actual = number;
Assert.AreEqual(expected, actual);
}
public void ShouldReturnEquivalentBagToNumberArray()
{
int[] numbers = new int[] { 1, 2, 3, 4, 3, 6, 4, 8, 17, 42, 6 };
ConcurrentBag<int> expected = new ConcurrentBag<int>(numbers);
ConcurrentBag<int> actual = new ConcurrentBag<int>();
UniqueRandomNumberGenerator g = new UniqueRandomNumberGenerator(numbers);
while (g.RemainingNumbersCount > 0)
{
int number = g.NewRandomNumber();
actual.Add(number);
}
CollectionAssert.IsEmpty(
actual.Except(expected),
"The bag of random numbers differs from the bag corresponding to the initial array.");
}
public void MinimumNumberInRangeGreaterThanMaximumNumber()
{
int minNumber = 3;
int maxNumber = 2;
UniqueRandomNumberGenerator g = new UniqueRandomNumberGenerator(minNumber, maxNumber);
}
public void ShouldReturnProperSubsetOfNumberRange()
{
int minNumber = 3;
int maxNumber = 15;
UniqueRandomNumberGenerator g = new UniqueRandomNumberGenerator(minNumber, maxNumber);
ReadOnlyCollection<int> numbers = g.RemainingNumbers;
HashSet<int> initialSet = new HashSet<int>(numbers);
const int GeneratedRandomNumberCount = 3;
// Sanity check on test data
Debug.Assert(
GeneratedRandomNumberCount < initialSet.Count,
String.Format("The generated random number count {0} must be less than the count of initial numbers {1} for this test.", GeneratedRandomNumberCount, initialSet.Count));
Debug.WriteLine("Random Numbers");
int number = 0;
HashSet<int> actual = new HashSet<int>();
for (int i = 1; i <= GeneratedRandomNumberCount; i++)
{
number = g.NewRandomNumber();
actual.Add(number);
}
Assert.IsTrue(
actual.IsProperSubsetOf(initialSet),
"Generated numbers should be a subset of the set corresponding to the initial range.");
}
public void ShouldReturnProperSubsetOfNumberArray()
{
int[] numbers = new int[] { 1, 2, 3, 4, 3, 6, 4, 8, 17, 42, 6 };
ConcurrentBag<int> initialBag = new ConcurrentBag<int>(numbers);
UniqueRandomNumberGenerator g = new UniqueRandomNumberGenerator(numbers);
const int GeneratedRandomNumberCount = 3;
// Sanity check on test data
Debug.Assert(
GeneratedRandomNumberCount < initialBag.Count,
String.Format("The generated random number count {0} must be less than the count of initial numbers {1} for this test.", GeneratedRandomNumberCount, initialBag.Count));
Debug.WriteLine("Random Numbers");
int number = 0;
ConcurrentBag<int> actualBag = new ConcurrentBag<int>();
for (int i = 1; i <= GeneratedRandomNumberCount; i++)
{
number = g.NewRandomNumber();
actualBag.Add(number);
}
HashSet<int> initialSet = new HashSet<int>(initialBag.AsEnumerable());
HashSet<int> actualSet = new HashSet<int>(actualBag.AsEnumerable());
Assert.IsTrue(
actualSet.IsProperSubsetOf(initialSet),
"Generated numbers should be a subset of the initial numbers.");
}