public void Correct_number_of_results(int size, int expected)
{
var set = new[] { 1, 2, 3, 4, 5 };
var combinations = new CombinationService().GetPermutations(set, size);
Assert.That(combinations.Count(), Is.EqualTo(expected));
}
public void Different_orderings_of_each_permutation_are_returned()
{
var set = new[] { 1, 2, 3, 4, 5 };
var combinations = new CombinationService().GetPermutations(set, 3);
var combinationsWithOneTwoAndThree = combinations.Where(combination => combination.Contains(1) && combination.Contains(2) && combination.Contains(3));
Assert.That(combinationsWithOneTwoAndThree.Count(), Is.EqualTo(6));
}
public void No_duplicates_in_any_combination()
{
var set = new[] { 1, 2, 3, 4, 5 };
var combinations = new CombinationService().GetPermutations(set, 3);
var duplicateCombinations = combinations.Where(combination => combination.Distinct().Count() != combination.Count());
Assert.That(duplicateCombinations.Count(), Is.EqualTo(0));
}
public CombinationServiceTests()
{
service = new CombinationService(
new DummyService(), new DummyService());
service.Start();
}
public CombinationServiceNetworkTests()
{
service = new CombinationService(
new NetworkService(), new NetworkService());
service.Start();
}
