mongoid-rspec

RSpec matchers for Mongoid.

Association Matchers

describe User do
  it { should have_many(:articles).with_foreign_key(:author_id) }

  it { should have_one(:record) }    

  it { should have_many :comments }
  
  #can also specify with_dependent to test if :dependent => :destroy/:destroy_all/:delete is set
  it { should have_many(:comments).with_dependent(:destroy) }
  #can verify autosave is set to true
  it { should have_many(:comments).with_autosave }

  it { should embed_one :profile }

  it { should have_and_belong_to_many(:children) }  
  it { should have_and_belong_to_many(:children).of_type(User) }
end

describe Profile do
  it { should be_embedded_in(:user).as_inverse_of(:profile) }
end

describe Article do
  it { should belong_to(:author).of_type(User).as_inverse_of(:articles) }
  it { should belong_to(:author).of_type(User).as_inverse_of(:articles).with_index }
  it { should embed_many(:comments) }
end

describe Comment do
  it { should be_embedded_in(:article).as_inverse_of(:comments) }
  it { should belong_to(:user).as_inverse_of(:comments) }
end

describe Record do
  it { should belong_to(:user).as_inverse_of(:record) }
end

Validation Matchers

describe Site do
  it { should validate_presence_of(:name) }
  it { should validate_uniqueness_of(:name) }
end

describe User do
    it { should validate_presence_of(:login) }
    it { should validate_uniqueness_of(:login).scoped_to(:site) }
    it { should validate_uniqueness_of(:email).case_insensitive.with_message("is already taken") }
    it { should validate_format_of(:login).to_allow("valid_login").not_to_allow("invalid login") }
    it { should validate_associated(:profile) }
    it { should validate_exclusion_of(:login).to_not_allow("super", "index", "edit") }
    it { should validate_inclusion_of(:role).to_allow("admin", "member") }
    it { should validate_confirmation_of(:email) }
    it { should validate_presence_of(:age).on(:create, :update) }
	# The on matcher can take var args or an array. Validations do not fail if on is not specified.
    it { should validate_numericality_of(:age).on(:create, :update) }
    it { should validate_inclusion_of(:age).to_allow(23..42).on([:create, :update]) }
    it { should validate_presence_of(:password).on(:create) }
  end

describe Article do
  it { should validate_length_of(:title).within(8..16) }
end

describe Profile do
  it { should validate_numericality_of(:age).greater_than(0) }
end    

describe MovieArticle do
  it { should validate_numericality_of(:rating).to_allow(:greater_than => 0).less_than_or_equal_to(5) }
  it { should validate_numericality_of(:classification).to_allow(:even => true, :only_integer => true, :nil => false) }    
end

describe Person do
   # in order to be able to use the custom_validate matcher, the custom validator class (in this case SsnValidator)
   # should redefine the kind method to return :custom, i.e. "def self.kind() :custom end"
  it { should custom_validate(:ssn).with_validator(SsnValidator) }
end

Others

describe User do
  it { should have_fields(:email, :login) }
  it { should have_field(:active).of_type(Boolean).with_default_value_of(false) }
  it { should have_fields(:birthdate, :registered_at).of_type(DateTime) }

  it { should have_index_for(:last_name) }
  it { should have_index_for(:email).with_options(:unique => true) }

  # useful if you use factory_girl and have Factory(:user) defined for User
  it { should save }
  
  it { should be_timestamped_document } # if you're declaring `include Mongoid::Timestamps`
  it { should be_versioned_document } # if you're declaring `include Mongoid::Versioning`
  it { should be_paranoid_document } # if you're declaring `include Mongoid::Paranoia`
  it { should be_multiparameted_document } # if you're declaring `include Mongoid::MultiParameterAttributes`
end

describe Log do
  it { should be_stored_in :logs }
end    

Use

add in Gemfile

gem 'mongoid-rspec'

drop in existing or dedicated support file in spec/support (spec/support/mongoid.rb)

RSpec.configure do |configuration|
  configuration.include Mongoid::Matchers
end

Acknowledgement

Thanks to Durran Jordan for providing the changes necessary to make this compatible with mongoid 2.0.0.rc, and for other contributors to this project.