Add test for offsets on epoch timestamps

charlatan/tests/data/special_tags.yaml

@@ -4,4 +4,6 @@ tomorrow: !now +1d
 
 current_epoch_time: !epoch_now
 
+tomorrow_epoch_time: !epoch_now +1d
+
 relationship: !rel tomorrow

charlatan/tests/test_yaml_parser.py

@@ -37,6 +37,14 @@ def test_epoch_now_tag(self):
 
         self.assertEqual(current_epoch_time, self.yaml['current_epoch_time'])
 
+    def test_epoch_now_tag_with_offset(self):
+        """Assert !epoch_now accepts an offset"""
+
+        tomorrow_datetime = self.current_time + datetime.timedelta(days=1)
+        tomorrow = datetime_to_epoch_timestamp(tomorrow_datetime)
+
+        self.assertEqual(tomorrow, self.yaml['tomorrow_epoch_time'])
+
     def test_rel_tag(self):
         """Assert !rel tag makes the value a relationship token"""