diff --git a/tests/Coduo/PHPHumanizer/Tests/DateTimeHumanizerTest.php b/tests/Coduo/PHPHumanizer/Tests/DateTimeHumanizerTest.php
index a50a16d..a4c441e 100644
--- a/tests/Coduo/PHPHumanizer/Tests/DateTimeHumanizerTest.php
+++ b/tests/Coduo/PHPHumanizer/Tests/DateTimeHumanizerTest.php
@@ -270,6 +270,16 @@ public function humanizeDataProvider()
     public function preciseDifferenceDataProvider()
     {
         return [
+             // Azerbaijani
+            ['2014-04-26 13:00:00', '2014-04-26 12:58:15', '1 dəqiqə, 45 saniyə əvvəl', 'az'],
+            ['2014-04-26 13:00:00', '2014-04-26 11:20:00', '1 saat, 40 dəqiqə əvvəl', 'az'],
+            ['2014-04-26 13:00:00', '2014-04-27 13:15:00', '1 gün, 15 dəqiqə sonra', 'az'],
+            ['2014-04-26 13:00:00', '2014-05-03 15:00:00', '7 gün, 2 saat sonra', 'az'],
+            ['2014-04-26 13:00:00', '2015-04-28 17:00:00', '1 il, 2 gün, 4 saat sonra', 'az'],
+            ['2014-04-26 13:00:00', '2014-04-28 23:00:00', '2 gün, 10 saat sonra', 'az'],
+            ['2014-04-26 13:00:00', '2014-04-25 11:20:00', '1 gün, 1 saat, 40 dəqiqə əvvəl', 'az'],
+            ['2014-04-26 13:00:00', '2016-04-27 13:00:00', '2 il, 1 gün sonra', 'az'],
+
             // English
             ['2014-04-26 13:00:00', '2014-04-26 12:58:15', '1 minute, 45 seconds ago', 'en'],
             ['2014-04-26 13:00:00', '2014-04-26 11:20:00', '1 hour, 40 minutes ago', 'en'],