Skip to content
This repository

HTTPS clone URL

Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP

Disables observers during testing, allowing you to write model tests that are completely decoupled from the observer. Also lets you enable observers for a certain block of code, so that you can write observer tests

branch: master

Fetching latest commit…

Octocat-spinner-32-eaf2f5

Cannot retrieve the latest commit at this time

Octocat-spinner-32 lib
Octocat-spinner-32 spec
Octocat-spinner-32 .gitignore
Octocat-spinner-32 Gemfile
Octocat-spinner-32 History.rdoc
Octocat-spinner-32 README.rdoc
Octocat-spinner-32 no_peeping_toms.gemspec
README.rdoc

no_peeping_toms

This plugin disables observers in your specs, so that model specs can run in complete isolation.

Installation

Add to your Gemfile:

gem 'no_peeping_toms', :git => 'git://github.com/alindeman/no_peeping_toms.git'

and run `bundle install`.

no_peeping_toms >= 2.0.0 only supports on Rails 3. If you need Rails 2 support, use 1.1.0: `gem install no_peeping_toms -v 1.1.0`

Usage

To disable observers, place the following code in your test.rb, or spec_helper.rb, or wherever:

ActiveRecord::Observer.disable_observers

You can easily reenable observers:

ActiveRecord::Observer.enable_observers

You can choose to run some code with specific observers turned on. This is useful when spec'ing an observer. For example, if you write the following observer:

class PersonObserver < ActiveRecord::Observer
  def before_update(person)
    old_person = Person.find person.id
    if old_person.name != person.name
      NameChange.create! :person => person, :old_name => old_person.name, :new_name => person.name
    end
  end
end

You can spec the Person class in complete isolation.

describe Person, " when changing a name" do
  before(:each) do
    @person = Person.create! :name => "Pat Maddox"
  end

  # By default, don't run any observers
  it "should not register a name change" do
    lambda { @person.update_attribute :name, "Don Juan Demarco" }.should_not change(NameChange, :count)
  end

  # Run only a portion of code with certain observers turned on
  it "should register a name change with the person observer turned on" do
    ActiveRecord::Observer.with_observers(:person_observer) do
      lambda { @person.update_attribute :name, "Don Juan Demarco" }.should change(NameChange, :count).by(1)
    end

    lambda { @person.update_attribute :name, "Man Without a Name" }.should_not change(NameChange, :count)
  end
end

Credits

  • Brandon Keepers

  • Corey Haines

  • Drew Olson

  • Jeff Siegel

  • Zach Dennis

  • Andy Lindeman

  • Ryan McGeary

Copyright © 2007-2011 Pat Maddox, released under the MIT license.

Something went wrong with that request. Please try again.