/// <summary> Selects the main branch from selected via GUI (passed with <paramref name="specification"/>) and <paramref name="availableBranches"/>. </summary>
/// <param name="specification"> The search specification. </param>
/// <param name="availableBranches"> Branches available after filtering with vehicle classes. </param>
/// <returns></returns>
private EBranch SelectMainBranch(Specification specification, IEnumerable <EBranch> availableBranches)
{
var mainBranch = _randomiser.GetRandom(specification.BranchSpecifications.Keys.Where(branch => branch.IsIn(availableBranches)), ERandomisationStep.MainBranchWhenSelectingByCategories);
LogDebug(ECoreLogMessage.Selected.Format(mainBranch));
if (mainBranch == EBranch.None)
{
LogWarn(EOrganizationLogMessage.NoVehiclesAvailableFor.Format(availableBranches.StringJoin(ESeparator.CommaAndSpace)));
return(EBranch.None);
}
return(mainBranch);
}
/// <summary> Randomizes contents of the collection using the given instance of a randomizer. </summary>
/// <typeparam name="T"> The type of collection elements. </typeparam>
/// <param name="collection"> The collection to randomize. </param>
/// <param name="randomizer"> The instance of a randomizer to randomize the collection with. </param>
/// <returns></returns>
public static IEnumerable <T> Randomize <T>(this IEnumerable <T> collection, IRandomiser randomizer)
{
var sourceList = collection.ToList();
var randomizedList = new List <T>();
while (randomizedList.Count() < collection.Count())
{
var selection = randomizer.GetRandom(sourceList);
randomizedList.Add(selection);
sourceList.Remove(selection);
}
return(randomizedList);
}
public void GetRandom_MustReturnEdgeCases()
{
// arrange
var observationCount = 1_000_000;
var minimumValue = 0;
var count = 100;
var numbers = Enumerable.Range(minimumValue, count);
var selectedNumbers = new List <double>();
// act
for (var observationNumber = 0; observationNumber < observationCount; observationNumber++)
{
selectedNumbers.Add(_randomizer.GetRandom(numbers));
}
// assert
selectedNumbers.Should().Contain(numbers.First());
selectedNumbers.Should().Contain(numbers.Last());
}
