public void OneIteration(
[ValueSource("CountRange")] int count)
{
var source = new SinglePassSequence<int>(Enumerable.Range(1, count));
var expected = Enumerable.Range(1, count);
Assert.That(source.SequenceEqual(expected));
}
public void MultipleIterations(
[Random(Int32.MinValue, Int32.MaxValue, 1)] int seed
, [Range(5, 20, 15)] int iterators
, [Range(20, 2000, 1980)] int range)
{
Random rnd = new Random(seed);
var source = new SinglePassSequence<int>(Enumerable.Range(1, range));
var enumerators = Enumerable.Range(1, iterators).Select(x => source.GetEnumerator()).ToList();
var resultBuffers = Enumerable.Range(1, iterators).Select(x => new List<int>(range)).ToList();
while (enumerators.Count > 0)
{
int e = rnd.Next(enumerators.Count);
if (enumerators[e].MoveNext())
{
resultBuffers[e].Add(enumerators[e].Current);
}
else
{
Assert.That(Enumerable.Range(1, range).SequenceEqual(resultBuffers[e]));
resultBuffers.RemoveAt(e);
enumerators[e].Dispose();
enumerators.RemoveAt(e);
}
}
}
public void Example8()
{
var source = new SinglePassSequence<int>(Enumerable.Range(1, 100));
var result = source
.Zip(source.Skip(1), (l, r) => Tuple.Create(l, r))
.Zip(source.Skip(2), (l, r) => Tuple.Create(l.Item1, l.Item2, r))
.Skip(10)
.Take(2);
var expected = new List<Tuple<int, int, int>> {
Tuple.Create(11, 12, 13)
, Tuple.Create(12, 13, 14)
};
Assert.That(result.SequenceEqual(expected));
}
