Unit tests for the utils available.

[esirK]

Description

Adds unittests for both gsheet helper and twitter stream listener.

Type of change

• New feature (non-breaking change which adds functionality)

Screenshots

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation

[kilemensi]

👍 @esirK

Quick review:
I'm all for unit tests but I'm more interested in integration tests & I believe those give us more bang for the buck. So rather than testing if GoogleSheetHelper has credentials set & what format those credentials are in, a more valuable test is can GoogleSheetHelper connect when given valid credentials? etc.

[kilemensi]

PS: If a PR is under draft @esirK, the assumption is you're still working on it privately & you don't need reviews from the team just yet 😎 .

[esirK]

PS: If a PR is under draft @esirK, the assumption is you're still working on it privately & you don't need reviews from the team just yet 😎 .

I had talked to @ascii-dev on writing unit tests but after writing them, I wanted to discuss with the rest of the team on whether we should do integration tests instead of just unit tests that's why I made the PR a draft.