Add testing files

[willtheorangeguy]

Describe the Pull Request

Add tests for the main application.

[pep8speaks]

Hello @willtheorangeguy! Thanks for updating this PR. We checked the lines you've touched for PEP 8 issues, and found:

• In the file tests/test_main.py:

Line 2:80: E501 line too long (85 > 79 characters)
Line 10:1: E402 module level import not at top of file
Line 23:80: E501 line too long (171 > 79 characters)
Line 64:80: E501 line too long (82 > 79 characters)
Line 79:80: E501 line too long (82 > 79 characters)
Line 131:80: E501 line too long (83 > 79 characters)
Line 145:80: E501 line too long (86 > 79 characters)

Comment last updated at 2023-12-07 00:24:03 UTC