This repository hosts a sample of how to use the Node built-in test runner to
mock calls to the fetch and console.log functions.
The main script is in index.js run using node . and it is not adapted for
testability specifically in any way, it is just straight script-type code.
The test is in index.test.js run using node --test and it mocks the global
fetch as well as console.log functions and asserts the arguments they are
expected to be called with as well as provides the mock implementation.