require 'spec_helper'

module Polyamorous
  describe JoinDependency do

    context 'with symbol joins' do
      subject { new_join_dependency Person, :articles => :comments }

      specify { subject.join_associations.should have(2).associations }
      specify { subject.join_associations.should be_all { |a| a.join_type == Arel::InnerJoin } }
    end

    context 'with has_many :through association' do
      subject { new_join_dependency Person, :authored_article_comments }

      specify { subject.join_associations.should have(1).association }
      specify { subject.join_associations.first.table_name.should eq 'comments' }
    end

    context 'with outer join' do
      subject { new_join_dependency Person, new_join(:articles, :outer) }

      specify { subject.join_associations.should have(1).association }
      specify { subject.join_associations.should be_all { |a| a.join_type == Arel::OuterJoin } }
    end

    context 'with nested outer joins' do
      subject { new_join_dependency Person, new_join(:articles, :outer) => new_join(:comments, :outer) }

      specify { subject.join_associations.should have(2).associations }
      specify { subject.join_associations.should be_all { |a| a.join_type == Arel::OuterJoin } }
    end

    context 'with polymorphic belongs_to join' do
      subject { new_join_dependency Note, new_join(:notable, :inner, Person) }

      specify { subject.join_associations.should have(1).association }
      specify { subject.join_associations.should be_all { |a| a.join_type == Arel::InnerJoin } }
      specify { subject.join_associations.first.table_name.should eq 'people' }

      it 'finds a join association respecting polymorphism' do
        parent = subject.join_base
        reflection = Note.reflect_on_association(:notable)
        subject.find_join_association_respecting_polymorphism(
          reflection, parent, Person
        ).should eq subject.join_associations.first
      end
    end

    context 'with polymorphic belongs_to join and nested symbol join' do
      subject { new_join_dependency Note, new_join(:notable, :inner, Person) => :comments }

      specify { subject.join_associations.should have(2).association }
      specify { subject.join_associations.should be_all { |a| a.join_type == Arel::InnerJoin } }
      specify { subject.join_associations.first.table_name.should eq 'people' }
      specify { subject.join_associations[1].table_name.should eq 'comments' }
    end

  end
end