Parameterized specs

[andrewminer]

In other BDD frameworks (e.g., mocha), one is able wrap the declaration of individual tests inside a loop so that each pass through the loop adds another set of tests. One example I've used is to walk through a whole set of classes ensuring they each obey some invariant of their common parent class. Another example is a library I've written which can have multiple implementations, but which should offer the same interface no matter what implementation it's using.

for Subclass in [SubclassAlpha, SubclassBravo, SubclassCharlie]:
    with description(f"using {subclass.__name__}:"):
        # add tests which create an instance of Subclass and test it

[nestorsalceda]

It's a good feature to think about.

Let me consider some implementation details.

Thanks!