Pytest for various functions added

[staru09]

Related to #22

[Aaditya-G]

@staru09 can you please share test results, along with the coverage you have provided.

also, a few tests are being skipped, can you please check that too?

[staru09]

Update:- The tests were skipped because I think they weren't configured properly so working on this, will be adding it to the PR.

[staru09]

@Aaditya-G can you tell me more about what this application expects as input of these fields, specially the ones before openai key field

[Aaditya-G]

@staru09

• api url : a string, the url will be used
• api key : this will be a header sent to the code to verify that the request came from whistleblower, it is a string
• both request body input field and response body output field can either be either a key-value pair or a json.

[staru09]

@Aaditya-G I have added tests for the core functions, please check if this works

[Aaditya-G]

LGTM