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require 'spec_helper'
module Arel
describe Join do
before do
@relation1 = Table.new(:users)
@relation2 = Table.new(:photos)
@predicate1 = @relation1[:id].eq(@relation2[:user_id])
@relation3 = Table.new(:users, :as => :super_users)
@relation4 = Table.new(:photos, :as => :super_photos)
@predicate2 = @relation3[:id].eq(@relation2[:user_id])
@predicate3 = @relation3[:id].eq(@relation4[:user_id])
end
describe '#to_sql' do
describe 'when joining with another relation' do
it 'manufactures sql joining the two tables on the predicate' do
sql = InnerJoin.new(@relation1, @relation2, @predicate1).to_sql
adapter_is :mysql do
sql.should be_like(%Q{
SELECT `users`.`id`, `users`.`name`, `photos`.`id`, `photos`.`user_id`, `photos`.`camera_id`
FROM `users`
INNER JOIN `photos` ON `users`.`id` = `photos`.`user_id`
})
end
adapter_is_not :mysql do
sql.should be_like(%Q{
SELECT "users"."id", "users"."name", "photos"."id", "photos"."user_id", "photos"."camera_id"
FROM "users"
INNER JOIN "photos" ON "users"."id" = "photos"."user_id"
})
end
end
describe 'when joining with another relation with an aliased table' do
it 'manufactures sql joining the two tables on the predicate respecting table aliasing' do
sql = InnerJoin.new(@relation3, @relation2, @predicate2).to_sql
adapter_is :mysql do
sql.should be_like(%Q{
SELECT `super_users`.`id`, `super_users`.`name`, `photos`.`id`, `photos`.`user_id`, `photos`.`camera_id`
FROM `users` AS `super_users`
INNER JOIN `photos` ON `super_users`.`id` = `photos`.`user_id`
})
end
adapter_is_not :mysql do
sql.should be_like(%Q{
SELECT "super_users"."id", "super_users"."name", "photos"."id", "photos"."user_id", "photos"."camera_id"
FROM "users" AS "super_users"
INNER JOIN "photos" ON "super_users"."id" = "photos"."user_id"
})
end
end
end
describe 'when joining with two relations with aliased tables' do
it 'manufactures sql joining the two tables on the predicate respecting table aliasing' do
sql = InnerJoin.new(@relation3, @relation4, @predicate3).to_sql
adapter_is :mysql do
sql.should be_like(%Q{
SELECT `super_users`.`id`, `super_users`.`name`, `super_photos`.`id`, `super_photos`.`user_id`, `super_photos`.`camera_id`
FROM `users` AS `super_users`
INNER JOIN `photos` AS `super_photos` ON `super_users`.`id` = `super_photos`.`user_id`
})
end
adapter_is_not :mysql do
sql.should be_like(%Q{
SELECT "super_users"."id", "super_users"."name", "super_photos"."id", "super_photos"."user_id", "super_photos"."camera_id"
FROM "users" AS "super_users"
INNER JOIN "photos" AS "super_photos" ON "super_users"."id" = "super_photos"."user_id"
})
end
end
end
end
describe 'when joining with a string' do
it "passes the string through to the where clause" do
sql = StringJoin.new(@relation1, "INNER JOIN asdf ON fdsa").to_sql
adapter_is :mysql do
sql.should be_like(%Q{
SELECT `users`.`id`, `users`.`name`
FROM `users`
INNER JOIN asdf ON fdsa
})
end
adapter_is_not :mysql do
sql.should be_like(%Q{
SELECT "users"."id", "users"."name"
FROM "users"
INNER JOIN asdf ON fdsa
})
end
end
end
end
end
end
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