"Don't use shared examples"

[glaucocustodio]

What are your thoughts on https://evenbetterspecs.github.io/#dont-use-shared-examples?

[asavageiv]

How donyou ensure a set of classes conform to an interface? What if I add a method to the interface?

[glaucocustodio]

I would have a test for each class, even because all of them would have different implementations..

[v-yarotsky]

Having a test for each class cannot guarantee that both classes conform to the same interface.
Example from real life: 2 interchangeable data storage mechanisms for a service – postgres and dynamodb. I had 2 implementations, and one shared examples group included in their respective specs. Worked beautifully!