Partially-Implemented Interfaces in Go

This article discusses the use of partially-implemented interfaces in Go, where developers can provide a mock implementation of an interface by only implementing the methods required by a specific function. This is made possible by interface embedding in Go, where embedding an interface in a struct automatically promotes all of its methods to the embedding struct.

The author notes that while this approach can be useful in certain scenarios, developers should be cautious as it may result in runtime errors if not used carefully. It is also recommended to avoid large interfaces in the first place, as they may weaken the abstraction and make it harder to implement and maintain.