https://github.com/cldwalker/debugger/issues/28

README

https://github.com/cldwalker/debugger/issues/28

foo_spec.rb

require 'rspec'

describe 'foo' do
  it 'should foo' do
    debugger
    Object.stub!(:foo)
  end
end

Gemfile

source :rubygems

gem 'debugger'
gem 'rspec'

Gemfile.lock

GEM
  remote: http://rubygems.org/
  specs:
    columnize (0.3.6)
    debugger (1.1.3)
      columnize (>= 0.3.1)
      debugger-linecache (~> 1.1.1)
      debugger-ruby_core_source (~> 1.1.2)
    debugger-linecache (1.1.1)
      debugger-ruby_core_source (>= 1.1.1)
    debugger-ruby_core_source (1.1.3)
    diff-lcs (1.1.3)
    rspec (2.10.0)
      rspec-core (~> 2.10.0)
      rspec-expectations (~> 2.10.0)
      rspec-mocks (~> 2.10.0)
    rspec-core (2.10.1)
    rspec-expectations (2.10.0)
      diff-lcs (~> 1.1.3)
    rspec-mocks (2.10.1)

PLATFORMS
  ruby

DEPENDENCIES
  debugger
  rspec