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#!./perl
BEGIN {
unless (-d 'blib') {
chdir 't' if -d 't';
@INC = '../lib';
require Config; import Config;
keys %Config; # Silence warning
if ($Config{extensions} !~ /\bList\/Util\b/) {
print "1..0 # Skip: List::Util was not built\n";
exit 0;
}
}
}
use Test::More tests => 6;
use List::Util qw(sum);
my $v = sum;
is( $v, undef, 'no args');
$v = sum(9);
is( $v, 9, 'one arg');
$v = sum(1,2,3,4);
is( $v, 10, '4 args');
$v = sum(-1);
is( $v, -1, 'one -1');
my $x = -3;
$v = sum($x, 3);
is( $v, 0, 'variable arg');
$v = sum(-3.5,3);
is( $v, -0.5, 'real numbers');