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# frozen_string_literal: true
require 'helper'
class Section < ActiveRecord::Base
has_many :items
acts_as_list
scope :visible, -> { where(visible: true) }
end
class Item < ActiveRecord::Base
belongs_to :section
acts_as_list scope: :section
scope :visible, -> { where(visible: true).joins(:section).merge(Section.visible) }
end
class JoinedTestCase < Minitest::Test
def setup
ActiveRecord::Base.connection.create_table :sections do |t|
t.column :position, :integer
t.column :visible, :boolean, default: true
end
ActiveRecord::Base.connection.create_table :items do |t|
t.column :position, :integer
t.column :section_id, :integer
t.column :visible, :boolean, default: true
end
ActiveRecord::Base.connection.schema_cache.clear!
[Section, Item].each(&:reset_column_information)
super
end
def teardown
teardown_db
super
end
end
# joining the relation returned by `#higher_items` or `#lower_items` to another table
# previously could result in ambiguous column names in the query
class TestHigherLowerItems < JoinedTestCase
def test_higher_items
section = Section.create
item1 = Item.create section: section
item2 = Item.create section: section
item3 = Item.create section: section
assert_equal item3.higher_items.visible, [item2, item1]
end
def test_lower_items
section = Section.create
item1 = Item.create section: section
item2 = Item.create section: section
item3 = Item.create section: section
assert_equal item1.lower_items.visible, [item2, item3]
end
end
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