Tests files should be in tests module

[yechielb2000]

For my opinion this files should be in test folder:

• test_server_mongo.py
• test_server_postgres.py
• import_test.py

#29 Fixed here

[yechielb2000]

Also if I may to add, Your code is super clean I admire it.

[noraa-july-stoke]

Thanks, I appreciate it. I left some notes in the PR for this. Please take a look.