diff --git a/t/LDAP.t b/t/LDAP.t
index f11fb60..a882953 100644
--- a/t/LDAP.t
+++ b/t/LDAP.t
@@ -7,12 +7,12 @@ use utf8;
 use LDV::LDAP;
 use File::Slurp;
 use Data::Dumper;
-use Test::More tests => 9;
+use Test::More tests => 13;
 
 my $hash = read_file('conf/ldv.conf');
 my $config = eval "$hash";
 SKIP: {
-  skip "Can't load config", 9 unless (ref($config) eq 'HASH');
+  skip "Can't load config", 13 unless (ref($config) eq 'HASH');
 
   my $ldap = LDV::LDAP->new($config->{ldap});
   isa_ok($ldap, "LDV::LDAP", "LDV::LDAP->new");
@@ -30,6 +30,12 @@ SKIP: {
   $attrs->{mail} = 'abigvalg@example.com';
   is_deeply($ldap->get("test20"), $attrs, "getting data of updated user");
 
+  my $pass = '{SSHA}K/LOxZB1fnNtQuRc1mApdoL7CGR2Akn/'; # 'test'
+  is($ldap->update("test20", {userPassword => $pass}), undef, "updating user password");
+  is($ldap->auth("test20", "test"),  1,     "check auth success");
+  is($ldap->auth("test20", "test1"), undef, "check auth falure (wrong pass)");
+  is($ldap->auth("test20", undef),   undef, "check auth falure (empty pass)");
+
   is($ldap->delete("test20"), undef, "deleting user");
 };