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require 'spec_helper'
module Arel
describe Order do
before do
@relation = Table.new(:users)
@attribute = @relation[:id]
end
describe '#to_sql' do
describe "when given an attribute" do
it "manufactures sql with an order clause populated by the attribute" do
sql = Order.new(@relation, [@attribute]).to_sql
adapter_is :mysql do
sql.should be_like(%Q{
SELECT `users`.`id`, `users`.`name`
FROM `users`
ORDER BY `users`.`id` ASC
})
end
adapter_is :oracle do
sql.should be_like(%Q{
SELECT "USERS"."ID", "USERS"."NAME"
FROM "USERS"
ORDER BY "USERS"."ID" ASC
})
distinct_attributes = ActiveRecord::Base.connection.distinct('"USERS"."NAME"', '"USERS"."ID"')
@relation.project(distinct_attributes).order(@relation[:id]).to_sql.should be_like(%Q{
SELECT DISTINCT "USERS"."NAME",
FIRST_VALUE("USERS"."ID") OVER (PARTITION BY "USERS"."NAME" ORDER BY "USERS"."ID") AS alias_0__
FROM "USERS"
ORDER BY alias_0__
})
distinct_attributes = ActiveRecord::Base.connection.distinct('"USERS"."NAME"', '"USERS"."ID" DESC')
@relation.project(distinct_attributes).order('"USERS"."ID" DESC').to_sql.should be_like(%Q{
SELECT DISTINCT "USERS"."NAME",
FIRST_VALUE("USERS"."ID") OVER (PARTITION BY "USERS"."NAME" ORDER BY "USERS"."ID" DESC) AS alias_0__
FROM "USERS"
ORDER BY alias_0__ DESC
})
end
adapter_is_not :mysql, :oracle do
sql.should be_like(%Q{
SELECT "users"."id", "users"."name"
FROM "users"
ORDER BY "users"."id" ASC
})
end
end
end
describe "when given multiple attributes" do
before do
@another_attribute = @relation[:name]
end
it "manufactures sql with an order clause populated by comma-separated attributes" do
sql = Order.new(@relation, [@attribute, @another_attribute]).to_sql
adapter_is :mysql do
sql.should be_like(%Q{
SELECT `users`.`id`, `users`.`name`
FROM `users`
ORDER BY `users`.`id` ASC, `users`.`name` ASC
})
end
adapter_is :oracle do
sql.should be_like(%Q{
SELECT "USERS"."ID", "USERS"."NAME"
FROM "USERS"
ORDER BY "USERS"."ID" ASC, "USERS"."NAME" ASC
})
end
adapter_is_not :mysql, :oracle do
sql.should be_like(%Q{
SELECT "users"."id", "users"."name"
FROM "users"
ORDER BY "users"."id" ASC, "users"."name" ASC
})
end
end
end
describe "when given a string" do
before do
@string = "asdf"
end
it "passes the string through to the order clause" do
sql = Order.new(@relation, [@string]).to_sql
adapter_is :mysql do
sql.should be_like(%Q{
SELECT `users`.`id`, `users`.`name`
FROM `users`
ORDER BY asdf
})
end
adapter_is :oracle do
sql.should be_like(%Q{
SELECT "USERS"."ID", "USERS"."NAME"
FROM "USERS"
ORDER BY asdf
})
end
adapter_is_not :mysql, :oracle do
sql.should be_like(%Q{
SELECT "users"."id", "users"."name"
FROM "users"
ORDER BY asdf
})
end
end
end
describe "when ordering an ordered relation" do
before do
@ordered_relation = Order.new(@relation, [@attribute])
@another_attribute = @relation[:name]
end
it "manufactures sql with the order clause of the last ordering preceding the first ordering" do
sql = Order.new(@ordered_relation, [@another_attribute]).to_sql
adapter_is :mysql do
sql.should be_like(%Q{
SELECT `users`.`id`, `users`.`name`
FROM `users`
ORDER BY `users`.`name` ASC, `users`.`id` ASC
})
end
adapter_is :oracle do
sql.should be_like(%Q{
SELECT "USERS"."ID", "USERS"."NAME"
FROM "USERS"
ORDER BY "USERS"."NAME" ASC, "USERS"."ID" ASC
})
end
adapter_is_not :mysql, :oracle do
sql.should be_like(%Q{
SELECT "users"."id", "users"."name"
FROM "users"
ORDER BY "users"."name" ASC, "users"."id" ASC
})
end
end
end
end
end
end
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