Issue 35 - Write Unit Tests and e2e for HelpSection component

[Joranhezon]

Fixes #35

Description
I've added a snapshot test to check if page's UI is accurate. Also, created some tests to check modals's active attributes before and after the click on it's respective button. Additionally, I created a TEST.MD file to document useful tips and common errors that I found while setting up my environment. Still need to add e2e tests.

Checklist:

• My pull request has a descriptive title (not a vague title like Update index.md).
• My pull request targets the master branch of the repository.
• My commit messages follow best practices.
• I added tests for the changes I made (if applicable).
• I added or updated documentation (if applicable).
• I tried running the project locally and verified that there are no
  visible errors.

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[akmadian]

Two things:

1. Could you please move the TEST.md file into ./test/
2. Please move HelpSection.spec.js into ./test/unit/specs/components/

Thanks!

[Joranhezon]

I'll fix those right away!

Changes made!

[Joranhezon]

@akmadian should I also move e2e tests to ./test/e2e/specs/components/ ?

[akmadian]

Yes @Joranhezon, please do

[Joranhezon]

Hi @akmadian sorry for the wait! I got caught up in some university projects, but here it is! I made an e2e test for every link in each pop up of HelpSection, checking if they were redirecting to the correct page. I also updated TEST.md to document a command to run only e2e tests.

[akmadian]

Thanks, @Joranhezon! Merging now :)