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shared_list.rb
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module Shared
module List
def setup
(1..4).each do |counter|
node = ListMixin.new parent_id: 5
node.pos = counter
node.save!
end
end
def test_reordering
assert_equal [1, 2, 3, 4], ListMixin.where(parent_id: 5).order('pos').map(&:id)
ListMixin.where(id: 2).first.move_lower
assert_equal [1, 3, 2, 4], ListMixin.where(parent_id: 5).order('pos').map(&:id)
ListMixin.where(id: 2).first.move_higher
assert_equal [1, 2, 3, 4], ListMixin.where(parent_id: 5).order('pos').map(&:id)
ListMixin.where(id: 1).first.move_to_bottom
assert_equal [2, 3, 4, 1], ListMixin.where(parent_id: 5).order('pos').map(&:id)
ListMixin.where(id: 1).first.move_to_top
assert_equal [1, 2, 3, 4], ListMixin.where(parent_id: 5).order('pos').map(&:id)
ListMixin.where(id: 2).first.move_to_bottom
assert_equal [1, 3, 4, 2], ListMixin.where(parent_id: 5).order('pos').map(&:id)
ListMixin.where(id: 4).first.move_to_top
assert_equal [4, 1, 3, 2], ListMixin.where(parent_id: 5).order('pos').map(&:id)
end
def test_move_to_bottom_with_next_to_last_item
assert_equal [1, 2, 3, 4], ListMixin.where(parent_id: 5).order('pos').map(&:id)
ListMixin.where(id: 3).first.move_to_bottom
assert_equal [1, 2, 4, 3], ListMixin.where(parent_id: 5).order('pos').map(&:id)
end
def test_next_prev
assert_equal ListMixin.where(id: 2).first, ListMixin.where(id: 1).first.lower_item
assert_nil ListMixin.where(id: 1).first.higher_item
assert_equal ListMixin.where(id: 3).first, ListMixin.where(id: 4).first.higher_item
assert_nil ListMixin.where(id: 4).first.lower_item
end
def test_injection
item = ListMixin.new(parent_id: 1)
assert_equal({ parent_id: 1 }, item.scope_condition)
assert_equal "pos", item.position_column
end
def test_insert
new = ListMixin.create(parent_id: 20)
assert_equal 1, new.pos
assert new.first?
assert new.last?
new = ListMixin.create(parent_id: 20)
assert_equal 2, new.pos
assert !new.first?
assert new.last?
new = ListMixin.create(parent_id: 20)
assert_equal 3, new.pos
assert !new.first?
assert new.last?
new = ListMixin.create(parent_id: 0)
assert_equal 1, new.pos
assert new.first?
assert new.last?
end
def test_insert_at
new = ListMixin.create(parent_id: 20)
assert_equal 1, new.pos
new = ListMixin.create(parent_id: 20)
assert_equal 2, new.pos
new = ListMixin.create(parent_id: 20)
assert_equal 3, new.pos
new4 = ListMixin.create(parent_id: 20)
assert_equal 4, new4.pos
new4.insert_at(3)
assert_equal 3, new4.pos
new.reload
assert_equal 4, new.pos
new.insert_at(2)
assert_equal 2, new.pos
new4.reload
assert_equal 4, new4.pos
new5 = ListMixin.create(parent_id: 20)
assert_equal 5, new5.pos
new5.insert_at(1)
assert_equal 1, new5.pos
new4.reload
assert_equal 5, new4.pos
end
def test_delete_middle
assert_equal [1, 2, 3, 4], ListMixin.where(parent_id: 5).order('pos').map(&:id)
ListMixin.where(id: 2).first.destroy
assert_equal [1, 3, 4], ListMixin.where(parent_id: 5).order('pos').map(&:id)
assert_equal 1, ListMixin.where(id: 1).first.pos
assert_equal 2, ListMixin.where(id: 3).first.pos
assert_equal 3, ListMixin.where(id: 4).first.pos
ListMixin.where(id: 1).first.destroy
assert_equal [3, 4], ListMixin.where(parent_id: 5).order('pos').map(&:id)
assert_equal 1, ListMixin.where(id: 3).first.pos
assert_equal 2, ListMixin.where(id: 4).first.pos
end
def test_with_string_based_scope
new = ListWithStringScopeMixin.create(parent_id: 500)
assert_equal 1, new.pos
assert new.first?
assert new.last?
end
def test_nil_scope
new1, new2, new3 = ListMixin.create, ListMixin.create, ListMixin.create
new2.move_higher
assert_equal [new2, new1, new3].map(&:id), ListMixin.where(parent_id: nil).order('pos').map(&:id)
end
def test_update_position_when_scope_changes
assert_equal [1, 2, 3, 4], ListMixin.where(parent_id: 5).order('pos').map(&:id)
parent = ListMixin.create(parent_id: 6)
ListMixin.where(id: 2).first.move_within_scope(6)
assert_equal 2, ListMixin.where(id: 2).first.pos
assert_equal [1, 3, 4], ListMixin.where(parent_id: 5).order('pos').map(&:id)
assert_equal 1, ListMixin.where(id: 1).first.pos
assert_equal 2, ListMixin.where(id: 3).first.pos
assert_equal 3, ListMixin.where(id: 4).first.pos
ListMixin.where(id: 2).first.move_within_scope(5)
assert_equal [1, 3, 4, 2], ListMixin.where(parent_id: 5).order('pos').map(&:id)
end
def test_remove_from_list_should_then_fail_in_list?
assert_equal true, ListMixin.where(id: 1).first.in_list?
ListMixin.where(id: 1).first.remove_from_list
assert_equal false, ListMixin.where(id: 1).first.in_list?
end
def test_remove_from_list_should_set_position_to_nil
assert_equal [1, 2, 3, 4], ListMixin.where(parent_id: 5).order('pos').map(&:id)
ListMixin.where(id: 2).first.remove_from_list
assert_equal [2, 1, 3, 4], ListMixin.where(parent_id: 5).order('pos').map(&:id)
assert_equal 1, ListMixin.where(id: 1).first.pos
assert_equal nil, ListMixin.where(id: 2).first.pos
assert_equal 2, ListMixin.where(id: 3).first.pos
assert_equal 3, ListMixin.where(id: 4).first.pos
end
def test_remove_before_destroy_does_not_shift_lower_items_twice
assert_equal [1, 2, 3, 4], ListMixin.where(parent_id: 5).order('pos').map(&:id)
ListMixin.where(id: 2).first.remove_from_list
ListMixin.where(id: 2).first.destroy
assert_equal [1, 3, 4], ListMixin.where(parent_id: 5).order('pos').map(&:id)
assert_equal 1, ListMixin.where(id: 1).first.pos
assert_equal 2, ListMixin.where(id: 3).first.pos
assert_equal 3, ListMixin.where(id: 4).first.pos
end
def test_before_destroy_callbacks_do_not_update_position_to_nil_before_deleting_the_record
assert_equal [1, 2, 3, 4], ListMixin.where(parent_id: 5).order('pos').map(&:id)
# We need to trigger all the before_destroy callbacks without actually
# destroying the record so we can see the affect the callbacks have on
# the record.
# NOTE: Hotfix for rails3 ActiveRecord
list = ListMixin.where(id: 2).first
if list.respond_to?(:run_callbacks)
# Refactored to work according to Rails3 ActiveRSupport Callbacks <http://api.rubyonrails.org/classes/ActiveSupport/Callbacks.html>
list.run_callbacks(:destroy) if rails_3
list.run_callbacks(:before_destroy) if !rails_3
else
list.send(:callback, :before_destroy)
end
assert_equal [1, 2, 3, 4], ListMixin.where(parent_id: 5).order('pos').map(&:id)
assert_equal 1, ListMixin.where(id: 1).first.pos
assert_equal 2, ListMixin.where(id: 2).first.pos
assert_equal 2, ListMixin.where(id: 3).first.pos
assert_equal 3, ListMixin.where(id: 4).first.pos
end
def test_before_create_callback_adds_to_bottom
assert_equal [1, 2, 3, 4], ListMixin.where(parent_id: 5).order('pos').map(&:id)
new = ListMixin.create(parent_id: 5)
assert_equal 5, new.pos
assert !new.first?
assert new.last?
assert_equal [1, 2, 3, 4, 5], ListMixin.where(parent_id: 5).order('pos').map(&:id)
end
def test_before_create_callback_adds_to_given_position
assert_equal [1, 2, 3, 4], ListMixin.where(parent_id: 5).order('pos').map(&:id)
new = ListMixin.new(parent_id: 5)
new.pos = 1
new.save!
assert_equal 1, new.pos
assert new.first?
assert !new.last?
assert_equal [5, 1, 2, 3, 4], ListMixin.where(parent_id: 5).order('pos').map(&:id)
new = ListMixin.new(parent_id: 5)
new.pos = 3
new.save!
assert_equal 3, new.pos
assert !new.first?
assert !new.last?
assert_equal [5, 1, 6, 2, 3, 4], ListMixin.where(parent_id: 5).order('pos').map(&:id)
end
def test_non_persisted_records_dont_get_lock_called
new = ListMixin.new(parent_id: 5)
new.destroy
end
end
end