fix: toHaveTextContent collect properly text of children nodes

[Grohden]

What:

I've fixed #60 but this also cover the fixes from #59 (I've also copied the PR author test... but if the author wishes to merge his changes first and then have me apply my changes and rewrite this PR I can do it)

I've also added a missing test to assure that toHaveTextContent fails when it should

Why:

Described in #60, but to summarize: toHaveTextContent wasn't collecting properly children nodes to find text

How:

I've made a simple recursive function that transverses all children collecting text childs and join them for the match comparison

Checklist:

• Documentation added to the docs (N/A)
• Typescript definitions updated (N/A) - signatures doesn't change
• Tests
• Ready to be merged: all the tests are passing, so I'm assuming that this PR only fixes the current behaviour.

• I've only used ramda compositions because this project seems to be using ramda, but if you wish I can rewrite things without ramda.
• For another PR: I would recommend using babel-transform-imports for ramda imports (transform import {target} from 'ramda' to import target from 'ramda/es/{target}'), this would speed up things a little for jest/babel as it would not need to bundle/collect a lot of unused ramda functions from the ramda index.js

[cam-shaw]

Oh yay! Using the code in the PR solves an issue I've been having.
This PR resolves an issue when using the React-i18n Trans component, and proving it a components object as a prop.

It'd be great if we could have this merged in, assuming it doesn't present too many flaws by digging 'n' levels deep.

[cam-shaw]

@brunohkbx @thymikee aside from conflicts, thoughts on this PR?

[Grohden]

Conflicts solved :D

[finnp]

Hey ☺️ any updates here from the maintainers? Having a toHaveTextContent that actually collects all the textNodes would be superb :)

[codecov]

Codecov Report

Merging #61 (1959684) into main (09d898d) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##              main       #61   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            8         8           
  Lines          149       143    -6     
  Branches        50        44    -6     
=========================================
- Hits           149       143    -6     

Flag	Coverage Δ
node-12	100.00% <100.00%> (ø)
node-14	100.00% <100.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
src/to-have-text-content.js	100.00% <100.00%> (ø)

📣 Codecov can now indicate which changes are the most critical in Pull Requests. Learn more

[github-actions]

🎉 This PR is included in version 4.0.7 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot 📦🚀