used python unittest for the tests

test/test_parse_v2_2.py

@@ -1,4 +1,4 @@
-"""Test parsing of a DSMR v2.2 telegram."""
+import unittest
 
 from dsmr_parser.parsers import TelegramParserV2_2
 from dsmr_parser import telegram_specifications
@@ -28,9 +28,10 @@ TELEGRAM_V2_2 = [
 ]
 
 
-def test_parse():
-    """Test if telegram parsing results in correct results."""
+class TelegramParserV2_2Test(unittest.TestCase):
+    """ Test parsing of a DSMR v2.2 telegram. """
 
+    def test_parse(self):
         parser = TelegramParserV2_2(telegram_specifications.V2_2)
         result = parser.parse(TELEGRAM_V2_2)
 

test/test_parse_v4_2.py

@@ -1,6 +1,6 @@
-"""Test parsing of a DSMR v4.2 telegram."""
-import datetime
 from decimal import Decimal
+import datetime
+import unittest
 
 import pytz
 
@@ -47,8 +47,10 @@ TELEGRAM_V4_2 = [
     '!5D83',
 ]
 
+class TelegramParserV4_2Test(unittest.TestCase):
+    """ Test parsing of a DSMR v4.2 telegram. """
 
-def test_parse():
+    def test_parse(self):
         parser = TelegramParser(telegram_specifications.V4)
         result = parser.parse(TELEGRAM_V4_2)