Setup React Testing Library and add Initial Header Component

[gibsonliketheguitar]

Description

• Install RTL and Jest
• Wrote initial test for Header component

Related Issues

Resolves #499

Acceptance Criteria

• [x] Install Jest and React Testing Library

• [x] Set up Jest

• [x] Choose one file in the website package and write tests for it as a starting point

• [x] Try to reach a 100% coverage for this file

Checklist

• [x] I have followed all conventions outlined in our documentation.
• [x] I have fully tested my changes and confirmed that all new and existing tests pass.
• [x] I have written meaningful commit messages for all changes.
• [x] I have linted and formatted my changes to follow the code style of this repository.
• [ ] I have updated our documentation, accordingly.
• [x] I have checked currently opened pull requests to ensure that there are no pending pull request for the same changes or issues.
• [x] I have confirmed that this pull request fully meets the acceptance criteria for all related issues listed above.

Testing

 Header
    ✓ renders with branding (34 ms)
    ✓ renders with description (5 ms)
    ✓ renders with action button (14 ms)

Test Suites: 1 passed, 1 total
Tests:       3 passed, 3 total
Snapshots:   0 total
Time:        12.059 s
Ran all test suites.

File	% Stmts	% Branch	% Funcs	% Lines	Uncovered Line #s
website/src/widgets/header	66.66	100	50	80
header.tsx	100	100	100	100

[netlify[bot]]

‼️ Deploy request for lucky-parking-staging rejected.

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[gibsonliketheguitar]

[gibsonliketheguitar]

Further iterations on this would involve splitting the configuration to have a "base" and then possibly having another one for project-specific testing.

Do you have any resources to read about this. I'm pretty green horn with configuration and stuff