Merge pull request #1 in CH/common_helper_encoder from byte_encoder to master

# By Peter Weidenbach
# Via Peter Weidenbach
* commit 'c62fa0d0':
  byte conversion added
  PEP8!

common_helper_encoder/json_encoder.py

 import json
 import datetime
+from base64 import standard_b64encode
+
 
 class ReportEncoder(json.JSONEncoder):
     def default(self, obj):
         if isinstance(obj, datetime.datetime):
             return obj.isoformat()
-        return json.JSONEncoder.default(self,obj)
+        elif isinstance(obj, bytes):
+            return standard_b64encode(obj).decode('utf-8')
+        return json.JSONEncoder.default(self, obj)

tests/test_json_encoder.py

+import unittest
+from common_helper_encoder.json_encoder import ReportEncoder
+
+
+class Test_json_encoder(unittest.TestCase):
+
+    def setUp(self):
+        self.encoder = ReportEncoder()
+
+    def test_byte_encoding(self):
+        input_data = b'TEST'
+        result = self.encoder.default(input_data)
+        self.assertEqual(result, "VEVTVA==", "base64 encoding not correct")
+
+
+if __name__ == "__main__":
+    unittest.main()