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associations_spec.rb
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associations_spec.rb
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require 'spec_helper'
require 'active_record'
describe ActiveHash::Base, "associations" do
before do
class Country < ActiveRecord::Base
extend ActiveHash::Associations::ActiveRecordExtensions
establish_connection :adapter => "sqlite3", :database => ":memory:"
connection.create_table(:countries, :force => true) {}
end
class School < ActiveRecord::Base
extend ActiveHash::Associations::ActiveRecordExtensions
establish_connection :adapter => "sqlite3", :database => ":memory:"
connection.create_table(:schools, :force => true) do |t|
t.integer :city_id
end
end
class City < ActiveHash::Base
include ActiveHash::Associations
end
class Author < ActiveHash::Base
include ActiveHash::Associations
end
class SchoolStatus < ActiveHash::Base
end
class Book < ActiveRecord::Base
establish_connection :adapter => "sqlite3", :database => ":memory:"
connection.create_table(:books, :force => true) do |t|
t.integer :author_id
t.boolean :published
end
if Object.const_defined?(:ActiveModel)
scope :published, {:conditions => {:published => true}}
else
named_scope :published, {:conditions => {:published => true}}
end
end
end
after do
Object.send :remove_const, :City
Object.send :remove_const, :Author
Object.send :remove_const, :Country
Object.send :remove_const, :School
Object.send :remove_const, :Book
end
describe "#has_many" do
context "with ActiveRecord children" do
before do
@included_book_1 = Book.create! :author_id => 1, :published => true
@included_book_2 = Book.create! :author_id => 1, :published => false
@excluded_book = Book.create! :author_id => 2, :published => true
end
it "find the correct records" do
Author.has_many :books
author = Author.create :id => 1
author.books.should == [@included_book_1, @included_book_2]
end
it "return a scope so that we can apply further scopes" do
Author.has_many :books
author = Author.create :id => 1
author.books.published.should == [@included_book_1]
end
end
context "with ActiveHash children" do
before do
Author.field :city_id
@included_author_1 = Author.create :city_id => 1
@included_author_2 = Author.create :city_id => 1
@excluded_author = Author.create :city_id => 2
end
it "find the correct records" do
City.has_many :authors
city = City.create :id => 1
city.authors.should == [@included_author_1, @included_author_2]
end
it "uses the correct class name when passed" do
City.has_many :writers, :class_name => "Author"
city = City.create :id => 1
city.writers.should == [@included_author_1, @included_author_2]
end
end
end
describe ActiveHash::Associations::ActiveRecordExtensions do
describe "#belongs_to_active_hash" do
context "setting by id" do
it "finds the correct records" do
School.belongs_to_active_hash :city
city = City.create
school = School.create :city_id => city.id
school.city.should == city
end
it "returns nil when the record does not exist" do
School.belongs_to_active_hash :city
school = School.create! :city_id => nil
school.city.should be_nil
end
end
context "setting by association" do
it "finds the correct records" do
School.belongs_to_active_hash :city
city = City.create
school = School.create :city => city
school.city.should == city
end
it "returns nil when the record does not exist" do
School.belongs_to_active_hash :city
school = School.create! :city => nil
school.city.should be_nil
end
end
it "finds active record metadata for this association" do
School.belongs_to_active_hash :city
association = School.reflect_on_association(:city)
association.should_not be_nil
association.klass.name.should == City.name
end
it "handles classes ending with an 's'" do
School.belongs_to_active_hash :school_status
association = School.reflect_on_association(:school_status)
association.should_not be_nil
association.klass.name.should == SchoolStatus.name
end
end
end
describe "#belongs_to" do
context "with an ActiveRecord parent" do
it "find the correct records" do
City.belongs_to :country
country = Country.create
city = City.create :country_id => country.id
city.country.should == country
end
it "returns nil when the record does not exist" do
City.belongs_to :country
city = City.create :country_id => 123
city.country.should be_nil
end
end
context "with an ActiveHash parent" do
it "find the correct records" do
Author.belongs_to :city
city = City.create
author = Author.create :city_id => city.id
author.city.should == city
end
it "returns nil when the record does not exist" do
Author.belongs_to :city
author = Author.create :city_id => 123
author.city.should be_nil
end
end
describe "#parent=" do
before do
Author.belongs_to :city
@city = City.create :id => 1
end
it "sets the underlying id of the parent" do
author = Author.new
author.city = @city
author.city_id.should == @city.id
end
it "works from hash assignment" do
author = Author.new :city => @city
author.city_id.should == @city.id
author.city.should == @city
end
it "works with nil" do
author = Author.new :city => @city
author.city_id.should == @city.id
author.city.should == @city
author.city = nil
author.city_id.should be_nil
author.city.should be_nil
end
end
describe "with a different foreign key" do
before do
Author.belongs_to :residence, :class_name => "City", :foreign_key => "city_id"
@city = City.create :id => 1
end
it "works" do
author = Author.new
author.residence = @city
author.city_id.should == @city.id
end
end
end
describe "#has_one" do
context "with ActiveRecord children" do
before do
Author.has_one :book
end
it "find the correct records" do
book = Book.create! :author_id => 1, :published => true
author = Author.create :id => 1
author.book.should == book
end
it "returns nil when there is no record" do
author = Author.create :id => 1
author.book.should be_nil
end
end
context "with ActiveHash children" do
before do
City.has_one :author
Author.field :city_id
end
it "find the correct records" do
city = City.create :id => 1
author = Author.create :city_id => 1
city.author.should == author
end
it "returns nil when there are no records" do
city = City.create :id => 1
city.author.should be_nil
end
end
end
describe "#marked_for_destruction?" do
it "should return false" do
City.new.marked_for_destruction?.should == false
end
end
end