Clarify the status of "slice"

And add tests

Changes

@@ -9,6 +9,7 @@ Revision history for ParaSeq
     - Updated status of ".invert" and added tests
     - Updated status of ".permutations" and added tests
     - Updated status of ".produce" and added tests
+    - Updated status of ".slice" and added tests
 
 0.0.7  2024-05-30T14:24:50+02:00
     - Added optimized ".batch" and tests

README.md

@@ -325,7 +325,7 @@ rotor
 slice
 -----
 
-[`.slice`](https://docs.raku.org/type/Seq#multi_method_slice)
+**Status**: the nature of the [`.slice`](https://docs.raku.org/type/Seq#multi_method_slice) method basically makes it impossible to hyper. Therefore, **no** specific hypering logic has been added for this method.
 
 snitch
 ------

doc/ParaSeq.rakudoc

@@ -409,7 +409,10 @@ have no specific hypering logic.
 
 =head2 slice
 
+B<Status>: the nature of the
 L<C<.slice>|https://docs.raku.org/type/Seq#multi_method_slice>
+method basically makes it impossible to hyper.  Therefore, B<no>
+specific hypering logic has been added for this method.
 
 =head2 snitch
 

t/43-slice.rakutest

@@ -0,0 +1,18 @@
+use Test;
+use ParaSeq;
+
+plan 4;
+
+my constant $elems  = 2_000_000;
+my constant @list   = (^$elems).List;
+my constant $slicer = 1,2,4...*;
+my constant @sliced  = @list.slice($slicer).List;
+my constant $batch  = 16;
+
+for 1, ParaSeq.default-degree {
+    my $seq := @list.&hyperize($batch, $_).slice($slicer);
+    isa-ok $seq, $_ == 1 ?? Seq !! ParaSeq;
+    is-deeply $seq.List, @sliced, ".slice with degree = $_";
+}
+
+# vim: expandtab shiftwidth=4