discourse/spec/components/concern/positionable_spec.rb

80 lines
2.4 KiB
Ruby

require "spec_helper"
require_dependency "concern/positionable"
describe Concern::Positionable do
def positions
TestItem.order('position asc, id asc').pluck(:id)
end
context "move_to" do
before do
class TestItem < ActiveRecord::Base
include Concern::Positionable
end
Topic.exec_sql("create temporary table test_items(id int primary key, position int)")
end
after do
Topic.exec_sql("drop table test_items")
# import is making my life hard, we need to nuke this out of orbit
des = ActiveSupport::DescendantsTracker.class_variable_get :@@direct_descendants
des[ActiveRecord::Base].delete(TestItem)
end
it "can position stuff correctly" do
5.times do |i|
Topic.exec_sql("insert into test_items(id,position) values(#{i}, #{i})")
end
positions.should == [0,1,2,3,4]
TestItem.find(3).move_to(0)
positions.should == [3,0,1,2,4]
TestItem.pluck(:position).sort.should == [0,1,2,3,4]
TestItem.find(3).move_to(1)
positions.should == [0,3,1,2,4]
# this is somewhat odd, but when there is no such position, not much we can do
TestItem.find(1).move_to(5)
positions.should == [0,3,2,4,1]
TestItem.pluck(:position).sort.should == [0,1,2,3,4]
item = TestItem.new
item.id = 7
item.save
item.position.should be_nil
end
it "can set records to have null position" do
5.times do |i|
Topic.exec_sql("insert into test_items(id,position) values(#{i}, #{i})")
end
TestItem.find(2).use_default_position
TestItem.find(2).position.should be_nil
TestItem.find(1).move_to(4)
TestItem.order('id ASC').pluck(:position).should == [0,4,nil,2,3]
end
it "can maintain null positions when moving things around" do
5.times do |i|
Topic.exec_sql("insert into test_items(id,position) values(#{i}, null)")
end
TestItem.find(2).move_to(0)
TestItem.order('id asc').pluck(:position).should == [nil,nil,0,nil,nil]
TestItem.find(0).move_to(4)
TestItem.order('id asc').pluck(:position).should == [4,nil,0,nil,nil]
TestItem.find(2).move_to(1)
TestItem.order('id asc').pluck(:position).should == [4,nil,1,nil,nil]
TestItem.find(0).move_to(1)
TestItem.order('id asc').pluck(:position).should == [1,nil,2,nil,nil]
end
end
end