Consuming external APIs from Ruby
Exercise 1: XML
On the Movie DB index, show a random actor who was born today:
- There's an RSS feed for this at http://rss.imdb.com/daily/born/
- Parse the RSS using Nokogiri
- Update it once a day (using whenever)
Exercise 2: JSON
Automatically retrieve the year of a movie for any new movie entered into MovieDB, using the themoviedb.org API. For the UI this means that there is no longer a "Year" field when creating a movie. It is automatically fetched and stored before the movie is created.
Write an RSpec test for this feature. Write multiple variants of this test, each using a different approach:
- Just call the real API from the example
- Use plain RSpec mocks ("stubs") to replace the HTTP request to the API with scripted behavior. Can you minimize the number of lines of code that now no longer run during tests?
- Mock out the network request to the API using Webmock
- Mock out the network request to the API using VCR. What happens when you change the movie title in the test?
Talk to your mentor about the pros and cons of each approach.