JezK
Edit File: has_one_through_associations_test.rb
require "cases/helper" require 'models/club' require 'models/member_type' require 'models/member' require 'models/membership' require 'models/sponsor' require 'models/organization' require 'models/member_detail' class HasOneThroughAssociationsTest < ActiveRecord::TestCase fixtures :member_types, :members, :clubs, :memberships, :sponsors, :organizations def setup @member = members(:groucho) end def test_has_one_through_with_has_one assert_equal clubs(:boring_club), @member.club end def test_has_one_through_with_has_many assert_equal clubs(:moustache_club), @member.favourite_club end def test_creating_association_creates_through_record new_member = Member.create(:name => "Chris") new_member.club = Club.create(:name => "LRUG") assert_not_nil new_member.current_membership assert_not_nil new_member.club end def test_replace_target_record new_club = Club.create(:name => "Marx Bros") @member.club = new_club @member.reload assert_equal new_club, @member.club end def test_replacing_target_record_deletes_old_association assert_no_difference "Membership.count" do new_club = Club.create(:name => "Bananarama") @member.club = new_club @member.reload end end def test_has_one_through_polymorphic assert_equal clubs(:moustache_club), @member.sponsor_club end def has_one_through_to_has_many assert_equal 2, @member.fellow_members.size end def test_has_one_through_eager_loading members = assert_queries(3) do #base table, through table, clubs table Member.find(:all, :include => :club, :conditions => ["name = ?", "Groucho Marx"]) end assert_equal 1, members.size assert_not_nil assert_no_queries {members[0].club} end def test_has_one_through_eager_loading_through_polymorphic members = assert_queries(3) do #base table, through table, clubs table Member.find(:all, :include => :sponsor_club, :conditions => ["name = ?", "Groucho Marx"]) end assert_equal 1, members.size assert_not_nil assert_no_queries {members[0].sponsor_club} end def test_has_one_through_polymorphic_with_source_type assert_equal members(:groucho), clubs(:moustache_club).sponsored_member end def test_eager_has_one_through_polymorphic_with_source_type clubs = Club.find(:all, :include => :sponsored_member, :conditions => ["name = ?","Moustache and Eyebrow Fancier Club"]) # Only the eyebrow fanciers club has a sponsored_member assert_not_nil assert_no_queries {clubs[0].sponsored_member} end def test_has_one_through_nonpreload_eagerloading members = assert_queries(1) do Member.find(:all, :include => :club, :conditions => ["members.name = ?", "Groucho Marx"], :order => 'clubs.name') #force fallback end assert_equal 1, members.size assert_not_nil assert_no_queries {members[0].club} end def test_has_one_through_nonpreload_eager_loading_through_polymorphic members = assert_queries(1) do Member.find(:all, :include => :sponsor_club, :conditions => ["members.name = ?", "Groucho Marx"], :order => 'clubs.name') #force fallback end assert_equal 1, members.size assert_not_nil assert_no_queries {members[0].sponsor_club} end def test_has_one_through_nonpreload_eager_loading_through_polymorphic_with_more_than_one_through_record Sponsor.new(:sponsor_club => clubs(:crazy_club), :sponsorable => members(:groucho)).save! members = assert_queries(1) do Member.find(:all, :include => :sponsor_club, :conditions => ["members.name = ?", "Groucho Marx"], :order => 'clubs.name DESC') #force fallback end assert_equal 1, members.size assert_not_nil assert_no_queries { members[0].sponsor_club } assert_equal clubs(:crazy_club), members[0].sponsor_club end def test_uninitialized_has_one_through_should_return_nil_for_unsaved_record assert_nil Member.new.club end def test_assigning_association_correctly_assigns_target new_member = Member.create(:name => "Chris") new_member.club = new_club = Club.create(:name => "LRUG") assert_equal new_club, new_member.club.target end def test_has_one_through_proxy_should_not_respond_to_private_methods assert_raise(NoMethodError) { clubs(:moustache_club).private_method } assert_raise(NoMethodError) { @member.club.private_method } end def test_has_one_through_proxy_should_respond_to_private_methods_via_send clubs(:moustache_club).send(:private_method) @member.club.send(:private_method) end def test_assigning_to_has_one_through_preserves_decorated_join_record @organization = organizations(:nsa) assert_difference 'MemberDetail.count', 1 do @member_detail = MemberDetail.new(:extra_data => 'Extra') @member.member_detail = @member_detail @member.organization = @organization end assert_equal @organization, @member.organization assert @organization.members.include?(@member) assert_equal 'Extra', @member.member_detail.extra_data end def test_reassigning_has_one_through @organization = organizations(:nsa) @new_organization = organizations(:discordians) assert_difference 'MemberDetail.count', 1 do @member_detail = MemberDetail.new(:extra_data => 'Extra') @member.member_detail = @member_detail @member.organization = @organization end assert_equal @organization, @member.organization assert_equal 'Extra', @member.member_detail.extra_data assert @organization.members.include?(@member) assert !@new_organization.members.include?(@member) assert_no_difference 'MemberDetail.count' do @member.organization = @new_organization end assert_equal @new_organization, @member.organization assert_equal 'Extra', @member.member_detail.extra_data assert !@organization.members.include?(@member) assert @new_organization.members.include?(@member) end def test_preloading_has_one_through_on_belongs_to assert_not_nil @member.member_type @organization = organizations(:nsa) @member_detail = MemberDetail.new @member.member_detail = @member_detail @member.organization = @organization @member_details = assert_queries(3) do MemberDetail.find(:all, :include => :member_type) end @new_detail = @member_details[0] assert @new_detail.loaded_member_type? assert_not_nil assert_no_queries { @new_detail.member_type } end def test_save_of_record_with_loaded_has_one_through @club = @member.club assert_not_nil @club.sponsored_member assert_nothing_raised do Club.find(@club.id).save! Club.find(@club.id, :include => :sponsored_member).save! end @club.sponsor.destroy assert_nothing_raised do Club.find(@club.id).save! Club.find(@club.id, :include => :sponsored_member).save! end end end