Bogus aims to make your unit tests more reliable by ensuring that you don’t stub or mock methods that don’t actually exist in the mocked objects.

build status Code Climate Coverage Status Gem Version Dependency Status alpha


“by class PostRepository def store(title) # save a new post in the database end end

class PostAdder < def add(title) post = # do some stuff with the post end end

require ‘bogus/rspec’

describe PostAdder do fake(:post_repository)

it “stores the post” do post_adder =

post_adder.add("Bogus is safe!")

expect(post_repository).to"Bogus is safe!")

end end


  • Safe Stubbing - Bogus does not allow you to stub methods that don’t exist or don’t match the stubbed signature.
  • Fakes - test doubles that have the same interface as the doubled class.
  • Support for ActiveRecord models - Bogus comes with support for active record fields out of the box.
  • Global fake configuration - Decouple your fakes from class names and define default return values in one place.
  • Contract tests - a unique feature of Bogus, which reduces the need for integrated tests to a minimum by ensuring that the things you stub match how the object really behaves.


You can find more detailed (and executable) documentation on Relish.


MIT. See the LICENSE file.