diff --git a/t/Array.t b/t/Array.t
new file mode 100644
index 0000000..1fe735e
--- /dev/null
+++ b/t/Array.t
@@ -0,0 +1,59 @@
+#!/usr/bin/perl
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+use strict;
+use warnings;
+
+use Test::More tests => 25;
+
+require_ok('NGCP::BulkProcessor::Array');
+
+NGCP::BulkProcessor::Array->import(qw(
+    contains
+    mergearrays
+    reversearray
+    removeduplicates
+));
+
+# Container functions
+is(contains(), 0);
+is(contains(undef, [], 0), 0);
+is(contains('foo', [ qw(aa bb cc) ], 0), 0);
+is(contains('foo', [ qw(aa bb cc) ], 1), 0);
+is(contains('foo', [ qw(aa bb foo cc) ], 0), 1);
+is(contains('foo', [ qw(aa bb FOO cc) ], 1), 1);
+
+is_deeply(mergearrays(), []);
+is_deeply(mergearrays([], []), []);
+is_deeply(mergearrays([ qw(aa bb) ], []), [ qw(aa bb) ]);
+is_deeply(mergearrays([ ], [ qw(aa bb) ]), [ qw(aa bb) ]);
+is_deeply(mergearrays([ qw(aa bb) ], [ qw(cc dd) ]), [ qw(aa bb cc dd) ]);
+
+is_deeply(reversearray(), []);
+is_deeply(reversearray([]), []);
+is_deeply(reversearray([ qw(aa bb cc) ], []), [ qw(cc bb aa) ]);
+
+is_deeply(removeduplicates(), []);
+is_deeply(removeduplicates([], 0), []);
+
+is_deeply(removeduplicates([ qw(aa bb cc) ], 0), [ qw(aa bb cc) ]);
+is_deeply(removeduplicates([ qw(aa bb aa cc aa) ], 0), [ qw(aa bb cc) ]);
+is_deeply(removeduplicates([ qw(aa aa bb bb cc cc) ], 0), [ qw(aa bb cc) ]);
+is_deeply(removeduplicates([ qw(aa bb aa cc bb cc) ], 0), [ qw(aa bb cc) ]);
+
+is_deeply(removeduplicates([ qw(Aa BB cC) ], 1), [ qw(Aa BB cC) ]);
+is_deeply(removeduplicates([ qw(aA BB Aa Cc aa) ], 1), [ qw(aA BB Cc) ]);
+is_deeply(removeduplicates([ qw(aA AA bB Bb CC cc) ], 1), [ qw(aA bB CC) ]);
+is_deeply(removeduplicates([ qw(AA bB Aa cc Bb CC) ], 1), [ qw(AA bB cc) ]);