hack around a parsing bug in earlier perls

this may preclude us from being able to implement bug-compatible engines
from both 5.12 and 5.14, but... shrug, can deal with that later if we
decide we care

1 files changed, 21 insertions, 0 deletions

diff --git a/t/slices.t b/t/slices.t
new file mode 100644
index 0000000..584dd43
--- /dev/null
+++ b/t/slices.t
@@ -0,0 +1,21 @@
+#!/usr/bin/env perl
+use strict;
+use warnings;
+use Test::More;
+
+my @nums = (1..10);
+
+{
+    use smartmatch sub {
+        return ref $_[0] eq 'ARRAY'
+            && ref $_[1] eq 'ARRAY'
+            && @{ $_[0] } == @{ $_[1] };
+    };
+    ok(@nums[0..-1] ~~ []);
+    ok(!(@nums[0..1] ~~ [0..2]));
+    ok(@nums[0..4] ~~ [1..5]);
+    ok(!(undef ~~ @nums[0..-1]));
+    ok(!(@nums[0..1] ~~ 2));
+}
+
+done_testing;