diff --git a/t/tokenization.t b/t/tokenization.t
new file mode 100644
index 0000000..3a89b18
--- /dev/null
+++ b/t/tokenization.t
@@ -0,0 +1,43 @@
+use strict;
+use warnings;
+use Test::More;
+use File::Basename 'dirname';
+use File::Spec::Functions qw/catfile/;
+use File::Temp 'tempfile';
+
+use FindBin;
+BEGIN {
+  unshift @INC, "$FindBin::Bin/../lib";
+};
+
+require_ok('KorAP::XML::TEI::Tokenization');
+
+# Test aggressive
+my $aggr = KorAP::XML::TEI::Tokenization::aggressive("Der alte Mann");
+is_deeply($aggr, [0,3,4,8,9, 13]);
+
+# Test conservative
+my $cons = KorAP::XML::TEI::Tokenization::conservative("Der alte Mann");
+is_deeply($cons, [0,3,4,8,9,13]);
+
+# Test data
+my $dataf = catfile(dirname(__FILE__), 'data', 'wikipedia.txt');
+my $data = '';
+
+ok(open(FH, '<' . $dataf), 'Open file');
+while (!eof(FH)) {
+  $data .= <FH>
+};
+close(FH);
+
+is(137166, length($data));
+
+$aggr = KorAP::XML::TEI::Tokenization::aggressive($data);
+is_deeply([@{$aggr}[0..7]], [1,7,8,12,14,18,19,22]);
+is(47242, scalar(@$aggr));
+
+$cons = KorAP::XML::TEI::Tokenization::conservative($data);
+is_deeply([@{$cons}[0..7]], [1,7,8,12,14,18,19,22]);
+is(43068, scalar(@$cons));
+
+done_testing;