activerecord/test/cases/associations/association_scope_test.rb


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require 'cases/helper'
require 'models/post'
require 'models/author'

module ActiveRecord
  module Associations
    class AssociationScopeTest < ActiveRecord::TestCase
      test 'does not duplicate conditions' do
        scope = AssociationScope.scope(Author.new.association(:welcome_posts),
                                        Author.connection)
        wheres = scope.where_clause.predicates.map(&:right)
        binds = scope.where_clause.binds.map(&:last)
        wheres.reject! { |node|
          Arel::Nodes::BindParam === node
        }
        assert_equal wheres.uniq, wheres
        assert_equal binds.uniq, binds
      end
    end
  end
end