When writing tests you will often check that functions that return complex and nested objects are of a certain shape - but you normally just want to check one or two fields. A test that is only checking the values that are relevant is often easier to read, easier to maintain, and when it fails is much easier to debug.

This testing challenge is set up to simulate that. We basically want to show how to assert that a function's return value contains a couple of key/values... but we want to ignore the rest of the object (as it isn't relevant for our test).

There are a few approaches, and knowing how to use each one is important to help you write clean tests that are easy to read.