#!/usr/bin/pugs
use v6;
use Test;
plan 13;
use Perl6::Value::List;
{
# end of stream
my $a = Perl6::Value::List.from_single( 1 .. 2 );
is( $a.shift, 1, 'iter 0' );
is( $a.shift, 2, 'iter 1' );
is( $a.shift, undef, 'end' );
}
{
# end of lazy stream
my $a = Perl6::Value::List.from_range( start => 1, end => 2, step => 1 );
is( $a.shift, 1, 'iter 0' );
is( $a.shift, 2, 'iter 1' );
is( $a.shift, undef, 'end' );
}
{
# 'Iter' object
my $span = Perl6::Value::List.from_range( start => 0, end => Inf, step => 1 );
is( $span.shift, 0, 'iter 0' );
is( $span.shift, 1, 'iter 1' );
is( $span.pop, Inf, 'pop' );
is( $span.pop, Inf, 'pop' );
# reverse
my $rev = $span.reverse();
isa_ok( $rev, 'Perl6::Value::List', 'reversed' );
is( $rev.shift, Inf, 'shift reverse' );
is( $rev.pop, 2, 'pop reverse' );
}