File: sum.t

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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 List::Util qw(sum);

print "1..6\n";

print "not " if defined sum;
print "ok 1\n";

print "not " unless sum(9) == 9;
print "ok 2\n";

print "not " unless sum(1,2,3,4) == 10;
print "ok 3\n";

print "not " unless sum(-1) == -1;
print "ok 4\n";

my $x = -3;

print "not " unless sum($x,3) == 0;
print "ok 5\n";

print "not " unless sum(-3.5,3) == -0.5;
print "ok 6\n";