Implement 'findNewAuthorities()'

[Patrick-Erichsen]

I was poking around in the codebase and noticed the commented instructions for building out findNewAuthorities() in LocationTracking.js.

I'm looking for a good first issue to tackle and thought I'd give this a go.

@penrods, it looks like you added the comments. Mind if I assign this to myself?

Outline

• Pull down the Healthcare Authorities list (see Settings.js)
• look at the GPS extent box of each authority and (if any of the GPS coordinates change) pop-up a notification that is basically:
  • There is a new "Healthcare Authority" for an area where you have been.
• Tapping that notification asks if they want to Add that Healthcare Authority under the Settings screen.

[Patrick-Erichsen]

If this work is a blocker on any other issues please let me know - I have experience developing React & React Native Web, but I'm pretty new to React Native and mobile in general. I don't want to hold anything else up if it takes longer than I anticipated.

[Patrick-Erichsen]

I spent a few hours today trying to figure out how to test rn-fetch-blog but couldn't get it to work.

I wanted to pull down our list of HCAs and verify that we're returning a valid YAML file that has an Authorities list, but it doesn't seem like there's a clean way to actually call RNFetchBlob in Jest without just mocking out the entire module (wkh237/react-native-fetch-blob#212).

If anyone has any thoughts on how to test this cleanly let me know.

[penrods]

Closing this one in favor of #425.