defaulting postgres port

Signed-off-by: Sarad Mohanan <sarad.mohanan@gmail.com>

tests/test_postgresql.py

@@ -152,7 +152,10 @@ def test_special_char_password(self):
  )
 
  # verify connection method with URL string unquoted after it's verified
- db_url = f"postgresql://{db_config['user']}:{db_config['password']}@{db_config['host']}:{db_config['port']}/{db_config['dbname']}"
+ db_url = (
+ f"postgresql://{db_config['user']}:{db_config['password']}@{db_config['host']}:"
+ f"{db_config.get('port', 5432)}/{db_config['dbname']}"
+ )
 
  connection_verified = connect(db_url)
  assert connection_verified._args.get("password") == password