class AccountModel:
    def __init__(self, account_type, account_number, name, first_name, address, birthdate):
        # We will automatically generate the new id
        self.id = 0
        self.type = account_type
        self.number = account_number
        self.name = name
        self.first_name = first_name
        self.address = address
        self.birthdate = birthdate
        #We will automatically generate next 2 parameters based on client address.
        self.longitude = 0;
        self.latitude = 0;
class MessageModel:
    def __init__(self, message, duration, creation_date, message_category):
        # We will automatically generate the new id
        self.id = 0
        self.message = message
        self.duration = duration
        self.creation_date = creation_date
        self.message_category = message_category
        self.printed_times = 0
        self.printed_once = False


class AccountModel:
    def __init__(self, account_type, account_number, name, first_name, address, birthdate):
        # We will automatically generate the new id
        self.id = 0
        self.type = account_type
        self.number = account_number
        self.name = name
        self.first_name = first_name
        self.address = address
        self.birthdate = birthdate
        #We will automatically generate next 2 parameters based on client address.
        self.longitude = 0;
        self.latitude = 0;
--- 
+++ 
@@ -1,15 +1,3 @@
-class MessageModel:
-    def __init__(self, message, duration, creation_date, message_category):
-        # We will automatically generate the new id
-        self.id = 0
-        self.message = message
-        self.duration = duration
-        self.creation_date = creation_date
-        self.message_category = message_category
-        self.printed_times = 0
-        self.printed_once = False
-
-
 class AccountModel:
     def __init__(self, account_type, account_number, name, first_name, address, birthdate):
         # We will automatically generate the new id
Remove message model as unused

No need in test class as soon as we have working api 