7 require Config; import Config;
8 keys %Config; # Silence warning
9 if ($Config{extensions} !~ /\bList\/Util\b/) {
10 print "1..0 # Skip: List::Util was not built\n";
17 use List::Util qw(reduce min);
18 use Test::More tests => 14;
22 is( $v, undef, 'no args');
24 $v = reduce { $a / $b } 756,3,7,4;
25 is( $v, 9, '4-arg divide');
27 $v = reduce { $a / $b } 6;
28 is( $v, 6, 'one arg');
30 @a = map { rand } 0 .. 20;
31 $v = reduce { $a < $b ? $a : $b } @a;
32 is( $v, min(@a), 'min');
34 @a = map { pack("C", int(rand(256))) } 0 .. 20;
35 $v = reduce { $a . $b } @a;
36 is( $v, join("",@a), 'concat');
43 $v = reduce { my $t="$a $b\n"; 0+add($a, $b) } 3, 2, 1;
44 is( $v, 6, 'call sub');
46 # Check that eval{} inside the block works correctly
47 $v = reduce { eval { die }; $a + $b } 0,1,2,3,4;
48 is( $v, 10, 'use eval{}');
50 $v = !defined eval { reduce { die if $b > 2; $a + $b } 0,1,2,3,4 };
53 sub foobar { reduce { (defined(wantarray) && !wantarray) ? $a+1 : 0 } 0,1,2,3 }
55 is( $v, 3, 'scalar context');
59 $v = reduce \&add2, 1,2,3;
60 is( $v, 6, 'sub reference');
62 $v = reduce { add2() } 3,4,5;
63 is( $v, 12, 'call sub');
66 $v = reduce { eval "$a + $b" } 1,2,3;
67 is( $v, 6, 'eval string');
70 $v = reduce { $a * $b } 1,2,3;
71 is( $a, 8, 'restore $a');
72 is( $b, 9, 'restore $b');