public void SelectReverseAggregated_FuncNull ()
{
IEnumerable<int> s = new[]{1};
Func<int, int, Tuple<int,int>> f = null;
s.SelectReverseAggregated (0, f);
}
public void SelectReverseAggregated ()
{
#region SelectReverseAggregated
IEnumerable<int> s = new []{1, 2, 3, 4};
Tuple<int, List<string>> r = s.SelectReverseAggregated (5,
(a,b) => Tuple.Create (a-b, "s" + (a-b)));
Assert.AreEqual (-5, r.Item1);
Assert.IsTrue (new[]{
"s1",
"s-2",
"s-4",
"s-5",
}.SequenceEqual (r.Item2));
r = new int[]{}.SelectReverseAggregated (42,
(a,b) => Tuple.Create (a-b, b.ToString ()));
Assert.AreEqual (42, r.Item1);
Assert.AreEqual (0, r.Item2.Count);
#endregion
}
public void SelectReverseAggregated ()
{
IEnumerable<int> s = new []{1, 2, 3, 4};
Assert.AreEqual (
"-5:s1,s-2,s-4,s-5",
s.SelectReverseAggregated (5,
(a,b) => Tuple.Create (a-b, "s" + (a-b)))
.Aggregate ((r, l) => r + ":" + l.Implode (",")));
Assert.AreEqual (
"42,0",
new int[]{}.SelectReverseAggregated (42,
(a,b) => Tuple.Create (a-b, b))
.Aggregate ((r, l) => r + "," + l.Count));
}