I'm using Rails since 2005, used RSpec all the time (and still do), and I must say the built-in testing framework (ExUnit) is "good enough" for me. I haven't felt the need to use something that would mimic RSpec more.

There is an RSpec clone called ESpec https://github.com/antonmi/espec.

I've used it in my own applications, however I would probably not recommend using it as it relies on a feature of the language (tuple modules) that might be removed in the next major version.

Elixir ships with a unit testing library called ExUnit, the documentation for which can be found here. https://hexdocs.pm/ex_unit/ExUnit.html

I've been programming Ruby and using RSpec for quite some time, but quite honestly I wouldn't use it for a new greenfield Ruby project tomorrow. I've consistently found that it's too difficult to teach and for a team to use effectively time and time again. I'd likely stick with MiniTest. Similarly as I wade into Elixir, I'm sticking with ExUnit. It's simple, concise, and gets the job done.

Hex (the package manager) is pretty great along with the rest of Elixir's core ecosystem (ExUnit, hexdocs, Mix, etc).

In Ruby-land I use RSpec almost exclusively but in Elixir I stick to ExUnit and it's great. I feel like there's not as much of a need for something RSpec like in Elixir-land due it being functional.

the package manager is here: https://hex.pm

with elixir having a lot of former and present rails devs in the eco-system - you can usually find "equivalent" packages("gems")..

say search for rspec https://hex.pm/packages?_utf8=&search=rspec&sort=recent_down...