Add a Jest setup

[jourdanrodrigues]

Issues

Closes #14 Closes #9 (was removed right after it was merged)

Description

This is solely to get the structure in and start raising the questions/patterns around it. Included a few unit tests around pure functions to kickstart. We can increment the structure later on by introducing RTL to test component rendering, but would be an overkill for this PR.

• Add tests for isUpperCase, getNewHsl, getGradientType, getDegrees and gradientParser
• Adjust gradientParser to accept RGB colors in the format of rgb(<r> <g> <b> / <a>)

[hxf31891]

@jourdanrodrigues Thanks for putting this together, I think it is a great idea. The project has gotten a lot more attention than I initially expected and it is probably passed time to start putting some of these things in place. Appreciate the help and looking forward to getting everything updated.