React app using Context API for state management

Hi. General feedback on the implementation would be great, but I'm particularly interested how other members of the community would approach testing a UI like this using react-testing-library. I found that beyond testing components were rendering at the App component level and the daily/weekly/monthly values were changing, I struggled to think of additional scenarios. Also interested in how others would group their components in the src folder, eg. do you still split out containers when using all function components with hooks? Thanks!