spy

A simple modern mocking library that uses the spy pattern and checks method's existence and arity.

Types

Docs

Guides

Zeitwerk

Namespace

Optimized

Getting Started

Learn more about the Spy gem.

Learn more about how to install and configure the gem

Learn more about the details

Learn more about the gem in the written guides

Learn more about the classes and modules

Test, play and inspect the gem for yourself

irb(main):001:0>

Run a Ruby playground with the spy gem pre-installed

Play