Test pointy blocks with definite returns.

Already worked, but didn't see any tests for it.

Author: jnthn

S06-signature/definite-return.t

@@ -2,7 +2,7 @@ use v6;
 
 use Test;
 
-plan 17;
+plan 19;
 
 # L<S06/Signatures>
 
@@ -122,6 +122,16 @@ constant indiana-pi = 3;
     is return-fifteen(), indiana-pi, 'can return indiana-pi';
 }
 
+{
+    my $pointy = -> --> 42 { };
+    is $pointy(), 42, 'pointy can have definite return type that is an integer';
+}
+
+{
+    my $pointy = -> --> Nil { sin(1) };
+    ok $pointy() === Nil, 'pointy can have definite return type of Nil';
+}
+
 # returns vs -->
 # indefinite vs immutable vs mutable
 # what are some wacky immutable values that we could return? (*)