RSpec Matchers

Additional RSpec test matchers that help you write more expressive examples

A long-lived project that still receives updates
Shoulda Matchers provides RSpec- and Minitest-compatible one-liners to test common Rails functionality that, if written by hand, would be much longer, more complex, and error-prone.
The project is in a healthy, maintained state
RSpec matcher to check that an expression changed its result in arbitrary seconds. Useful for expecting value which changes asynchronously.