diff --git a/t/range.t b/t/range.t
new file mode 100644
index 0000000..b5921cc
--- /dev/null
+++ b/t/range.t
@@ -0,0 +1,51 @@
+#!/usr/bin/env perl
+use strict;
+use warnings;
+use Test::More;
+
+use_ok('KorAP::Tokenizer::Range');
+
+my $range = KorAP::Tokenizer::Range->new;
+
+# Set a gap from 0 to 2, refering to position 0
+$range->gap(0, 2, 0);
+
+# Set a range from 3 to 14, refering to position 0
+$range->set(3, 14, 0);
+
+is($range->lookup(3), 0, 'Lookup is fine');
+
+# Set a gap from 15 to 16, refering to position 1
+$range->gap(15, 16, 1);
+$range->set(17, 20, 1);
+$range->set(21, 28, 2);
+
+is($range->lookup(3), 0, 'Lookup is fine');
+
+is($range->lookup(6), 0, 'Lookup is fine');
+is($range->lookup(14), 0, 'Lookup is fine');
+
+ok(!$range->lookup(1), 'Lookup is fine');
+ok(!$range->lookup(16), 'Lookup is fine');
+
+is($range->before(0), 0, 'Before is fine');
+is($range->before(1), 0, 'Before is fine');
+is($range->before(2), 0, 'Before is fine');
+is($range->before(3), 0, 'Before is fine');
+is($range->before(4), 0, 'Before is fine');
+is($range->before(15), 0, 'Before is fine');
+is($range->before(23), 1, 'Before is fine');
+ok(!$range->before(590), 'No range here');
+
+is($range->after(0), 0, 'After is fine');
+is($range->after(1), 0, 'After is fine');
+is($range->after(2), 0, 'After is fine');
+is($range->after(3), 0, 'After is fine');
+is($range->after(14), 0, 'After is fine');
+is($range->after(15), 1, 'After is fine');
+
+is($range->to_string,
+   '[0,2,!-1:0][3,14,0][15,16,!0:1][17,20,1][21,28,2][29,100,...]...',
+   'ToString is fine');
+done_testing;
+__END__