Spotty Features

Show trends about your music listening habits over time using different audio features like acousticness, danceability, and energy, based on the tracks you save to your Spotify library. Also generate playlists like a given song or artist, but with the specified audio features.

How to Develop

You will need Homebrew installed in macOS.

Create a Spotify application and copy your app's client ID to src/public/config.json. Add http://localhost:3000/auth as a redirect URI in your Spotify app.

brew update
brew install yarn
yarn install
gulp
open http://localhost:3000

How to Test

yarn install
yarn test

This will run the style checker and the Jest tests. You can run just the style checker via yarn run style. You can run just the Jest tests via yarn run unit-test.

Snapshots are used -- see test/components/__snapshots__/ -- to test that a React component is rendered the same way consistently based on the props it's given. If you update a component, a test may fail because the snapshot is now different from what is rendered. Manually compare the two and if the change is expected, update the now out-of-date snapshot with yarn run unit-test -- -u.

See also:

• Shallow rendering with Enzyme
• Jest matchers
• ESLint rules
• XO style checker

How to Deploy to Heroku

In your Spotify application, you'll need to add your Heroku app's URL, with /auth, as a valid redirect URI. You probably want to add two redirect URIs: one with https and the other with http.

git push heroku master