require 'helper' describe Arel::Nodes::Sum do describe "as" do it 'should alias the sum' do table = Arel::Table.new :users table[:id].sum.as('foo').to_sql.must_be_like %{ SUM("users"."id") AS foo } end end describe 'equality' do it 'is equal with equal ivars' do array = [Arel::Nodes::Sum.new('foo'), Arel::Nodes::Sum.new('foo')] assert_equal 1, array.uniq.size end it 'is not equal with different ivars' do array = [Arel::Nodes::Sum.new('foo'), Arel::Nodes::Sum.new('foo!')] assert_equal 2, array.uniq.size end end describe 'order' do it 'should order the sum' do table = Arel::Table.new :users table[:id].sum.desc.to_sql.must_be_like %{ SUM("users"."id") DESC } end end end