checklist.day

Spy

JSON →
library 1.0.5 ·ruby
✓ verified Jun 18, 2026
testing

A modern mocking library that raises errors on stubbing nonexistent methods or wrong arity.

Resources

docswww.rubydoc.info/gems/spy/ ↗
githubgithub.com/ryanong/spy ↗

API endpoints

full doc /v1/registry/spy
install /v1/registry/spy/install