public static void ToLookup_CustomComparator(Labeled <ParallelQuery <int> > labeled, int count)
{
ParallelQuery <int> query = labeled.Item;
IntegerRangeSet seen = new IntegerRangeSet(0, count);
ILookup <int, int> lookup = query.ToLookup(x => x * 2, new ModularCongruenceComparer(count * 2));
Assert.All(lookup,
group => { seen.Add(group.Key / 2); Assert.Equal(group.Key, Assert.Single(group) * 2); });
seen.AssertComplete();
Assert.Empty(lookup[-1]);
}
public static void ToLookup_ElementSelector(Labeled <ParallelQuery <int> > labeled, int count)
{
ParallelQuery <int> query = labeled.Item;
IntegerRangeSet seen = new IntegerRangeSet(0, count);
ILookup <int, int> lookup = query.ToLookup(x => x, y => y * 2);
Assert.All(lookup,
group => { seen.Add(group.Key); Assert.Equal(group.Key * 2, Assert.Single(group)); });
seen.AssertComplete();
Assert.Empty(lookup[-1]);
}
public static void ToLookup_DuplicateKeys_ElementSelector(Labeled <ParallelQuery <int> > labeled, int count)
{
ParallelQuery <int> query = labeled.Item;
IntegerRangeSet seenOuter = new IntegerRangeSet(0, Math.Min(count, 2));
ILookup <int, int> lookup = query.ToLookup(x => x % 2, y => - y);
Assert.All(lookup,
group =>
{
seenOuter.Add(group.Key);
IntegerRangeSet seenInner = new IntegerRangeSet(0, (count + ((1 + group.Key) % 2)) / 2);
Assert.All(group, y => { Assert.Equal(group.Key, -y % 2); seenInner.Add(-y / 2); });
seenInner.AssertComplete();
});
seenOuter.AssertComplete();
Assert.Empty(lookup[-1]);
}
public static void ToLookup_DuplicateKeys_CustomComparator(Labeled <ParallelQuery <int> > labeled, int count)
{
ParallelQuery <int> query = labeled.Item;
IntegerRangeSet seenOuter = new IntegerRangeSet(0, Math.Min(count, 2));
ILookup <int, int> lookup = query.ToLookup(x => x, new ModularCongruenceComparer(2));
Assert.All(lookup,
group =>
{
seenOuter.Add(group.Key % 2);
IntegerRangeSet seenInner = new IntegerRangeSet(0, (count + ((1 + group.Key) % 2)) / 2);
Assert.All(group, y => { Assert.Equal(group.Key % 2, y % 2); seenInner.Add(y / 2); });
seenInner.AssertComplete();
});
seenOuter.AssertComplete();
if (count < 2)
{
Assert.Empty(lookup[-1]);
}
}