Class: ListTest

Inherits:
ActiveSupport::TestCase
  • Object
show all
Defined in:
test/acts_as_list_test.rb

Instance Method Summary collapse

Instance Method Details

#setup ⇒ Object 



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# File 'test/acts_as_list_test.rb', line 10

def setup
  setup_db
  (1..4).each { |counter| ListMixin.create! :pos => counter, :parent_id => 5 }
end

#teardown ⇒ Object 



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# File 'test/acts_as_list_test.rb', line 15

def teardown
  teardown_db
end

#test_delete_middle ⇒ Object 



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# File 'test/acts_as_list_test.rb', line 119

def test_delete_middle
  assert_equal [1, 2, 3, 4], ListMixin.find(:all, :conditions => 'parent_id = 5', :order => 'pos').map(&:id)

  ListMixin.find(2).destroy

  assert_equal [1, 3, 4], ListMixin.find(:all, :conditions => 'parent_id = 5', :order => 'pos').map(&:id)

  assert_equal 1, ListMixin.find(1).pos
  assert_equal 2, ListMixin.find(3).pos
  assert_equal 3, ListMixin.find(4).pos

  ListMixin.find(1).destroy

  assert_equal [3, 4], ListMixin.find(:all, :conditions => 'parent_id = 5', :order => 'pos').map(&:id)

  assert_equal 1, ListMixin.find(3).pos
  assert_equal 2, ListMixin.find(4).pos
end

#test_delete_middle_with_holes ⇒ Object

special thanks to openhood on github



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# File 'test/acts_as_list_test.rb', line 211

def test_delete_middle_with_holes
  # first we check everything is at expected place
  assert_equal [1, 2, 3, 4], ListMixin.find(:all, :conditions => 'parent_id = 5', :order => 'pos').map(&:id)

  # then we create a hole in the list, say you're working with existing data in which you already have holes
  # or your scope is very complex
  ListMixin.delete(2)

  # we ensure the hole is really here
  assert_equal [1, 3, 4], ListMixin.find(:all, :conditions => 'parent_id = 5', :order => 'pos').map(&:id)
  assert_equal 1, ListMixin.find(1).pos
  assert_equal 3, ListMixin.find(3).pos
  assert_equal 4, ListMixin.find(4).pos

  # can we retrieve lower item despite the hole?
  assert_equal 3, ListMixin.find(1).lower_item.id

  # can we move an item lower jumping more than one position?
  ListMixin.find(1).move_lower
  assert_equal [3, 1, 4], ListMixin.find(:all, :conditions => 'parent_id = 5', :order => 'pos').map(&:id)
  assert_equal 2, ListMixin.find(3).pos
  assert_equal 3, ListMixin.find(1).pos
  assert_equal 4, ListMixin.find(4).pos

  # create another hole
  ListMixin.delete(1)

  # can we retrieve higher item despite the hole?
  assert_equal 3, ListMixin.find(4).higher_item.id

  # can we move an item higher jumping more than one position?
  ListMixin.find(4).move_higher
  assert_equal [4, 3], ListMixin.find(:all, :conditions => 'parent_id = 5', :order => 'pos').map(&:id)
  assert_equal 2, ListMixin.find(4).pos
  assert_equal 3, ListMixin.find(3).pos
end

#test_injection ⇒ Object 



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# File 'test/acts_as_list_test.rb', line 54

def test_injection
  item = ListMixin.new(:parent_id => 1)
  assert_equal ["parent_id = 1"], item.scope_condition    
  assert_equal "pos", item.position_column
end

#test_insert ⇒ Object 



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# File 'test/acts_as_list_test.rb', line 60

def test_insert    
  new = ListMixin.create(:parent_id => 20)
  # insert as last    
  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

#test_insert_at ⇒ Object 



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# File 'test/acts_as_list_test.rb', line 83

def test_insert_at 
  # insert as last    
  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

#test_move_to_bottom_with_next_to_last_item ⇒ Object 



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# File 'test/acts_as_list_test.rb', line 41

def test_move_to_bottom_with_next_to_last_item
  assert_equal [1, 2, 3, 4], ListMixin.find(:all, :conditions => 'parent_id = 5', :order => 'pos').map(&:id)
  ListMixin.find(3).move_to_bottom
  assert_equal [1, 2, 4, 3], ListMixin.find(:all, :conditions => 'parent_id = 5', :order => 'pos').map(&:id)
end

#test_move_to_higher_in_list ⇒ Object 



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# File 'test/acts_as_list_test.rb', line 180

def test_move_to_higher_in_list
  assert_equal [1, 2, 3, 4], ListMixin.find(:all, :conditions => 'parent_id = 5', :order => 'pos').map(&:id)
  item = ListMixin.find(2)
  item.move_to(1)
  assert_equal [2, 1, 3, 4], ListMixin.find(:all, :conditions => 'parent_id = 5', :order => 'pos').map(&:id)    
  item.move_to(-2)
  assert_equal [2, 1, 3, 4], ListMixin.find(:all, :conditions => 'parent_id = 5', :order => 'pos').map(&:id)
  assert_equal 1, item.pos
end

#test_move_to_lower_in_list ⇒ Object 



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# File 'test/acts_as_list_test.rb', line 170

def test_move_to_lower_in_list
  assert_equal [1, 2, 3, 4], ListMixin.find(:all, :conditions => 'parent_id = 5', :order => 'pos').map(&:id)
  item = ListMixin.find(2)
  item.move_to(3)
  assert_equal [1, 3, 2, 4], ListMixin.find(:all, :conditions => 'parent_id = 5', :order => 'pos').map(&:id)
  item.move_to(7)
  assert_equal [1, 3, 4, 2], ListMixin.find(:all, :conditions => 'parent_id = 5', :order => 'pos').map(&:id)
  assert_equal 4, item.pos
end

#test_next_prev ⇒ Object 



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# File 'test/acts_as_list_test.rb', line 47

def test_next_prev
  assert_equal ListMixin.find(2), ListMixin.find(1).lower_item
  assert_nil ListMixin.find(1).higher_item
  assert_equal ListMixin.find(3), ListMixin.find(4).higher_item
  assert_nil ListMixin.find(4).lower_item
end

#test_nil_scope ⇒ Object 



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# File 'test/acts_as_list_test.rb', line 145

def test_nil_scope
  new1, new2, new3 = ListMixin.create, ListMixin.create, ListMixin.create
  new2.move_higher
  assert_equal [new2, new1, new3], ListMixin.find(:all, :conditions => 'parent_id IS NULL', :order => 'pos')
end

#test_remove_before_destroy_does_not_shift_lower_items_twice ⇒ Object 



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# File 'test/acts_as_list_test.rb', line 190

def test_remove_before_destroy_does_not_shift_lower_items_twice 
  assert_equal [1, 2, 3, 4], ListMixin.find(:all, :conditions => 'parent_id = 5', :order => 'pos').map(&:id)

  ListMixin.find(2).remove_from_list 
  ListMixin.find(2).destroy 

  assert_equal [1, 3, 4], ListMixin.find(:all, :conditions => 'parent_id = 5', :order => 'pos').map(&:id)

  assert_equal 1, ListMixin.find(1).pos
  assert_equal 2, ListMixin.find(3).pos
  assert_equal 3, ListMixin.find(4).pos
end

#test_remove_from_list_should_set_position_to_nil ⇒ Object 



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# File 'test/acts_as_list_test.rb', line 157

def test_remove_from_list_should_set_position_to_nil 
  assert_equal [1, 2, 3, 4], ListMixin.find(:all, :conditions => 'parent_id = 5', :order => 'pos').map(&:id)

  ListMixin.find(2).remove_from_list 

  assert_equal [2, 1, 3, 4], ListMixin.find(:all, :conditions => 'parent_id = 5', :order => 'pos').map(&:id)

  assert_equal 1,   ListMixin.find(1).pos
  assert_equal nil, ListMixin.find(2).pos
  assert_equal 2,   ListMixin.find(3).pos
  assert_equal 3,   ListMixin.find(4).pos
end

#test_remove_from_list_should_then_fail_in_list? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'test/acts_as_list_test.rb', line 151

def test_remove_from_list_should_then_fail_in_list? 
  assert_equal true, ListMixin.find(1).in_list?
  ListMixin.find(1).remove_from_list
  assert_equal false, ListMixin.find(1).in_list?
end

#test_reordering ⇒ Object 



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# File 'test/acts_as_list_test.rb', line 19

def test_reordering
  assert_equal [1, 2, 3, 4], ListMixin.find(:all, :conditions => 'parent_id = 5', :order => 'pos').map(&:id)

  ListMixin.find(2).move_lower
  assert_equal [1, 3, 2, 4], ListMixin.find(:all, :conditions => 'parent_id = 5', :order => 'pos').map(&:id)

  ListMixin.find(2).move_higher
  assert_equal [1, 2, 3, 4], ListMixin.find(:all, :conditions => 'parent_id = 5', :order => 'pos').map(&:id)

  ListMixin.find(1).move_to_bottom
  assert_equal [2, 3, 4, 1], ListMixin.find(:all, :conditions => 'parent_id = 5', :order => 'pos').map(&:id)

  ListMixin.find(1).move_to_top
  assert_equal [1, 2, 3, 4], ListMixin.find(:all, :conditions => 'parent_id = 5', :order => 'pos').map(&:id)

  ListMixin.find(2).move_to_bottom
  assert_equal [1, 3, 4, 2], ListMixin.find(:all, :conditions => 'parent_id = 5', :order => 'pos').map(&:id)

  ListMixin.find(4).move_to_top
  assert_equal [4, 1, 3, 2], ListMixin.find(:all, :conditions => 'parent_id = 5', :order => 'pos').map(&:id)
end

#test_should_not_trigger_unexpected_callbacks_on_destroy ⇒ Object 



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# File 'test/acts_as_list_test.rb', line 203

def test_should_not_trigger_unexpected_callbacks_on_destroy
  element = ListMixin.find(2)
  assert !element.before_save_triggered
  element.destroy
  assert !element.before_save_triggered
end

#test_with_string_based_scope ⇒ Object 



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# File 'test/acts_as_list_test.rb', line 138

def test_with_string_based_scope
  new = ListWithStringScopeMixin.create(:parent_id => 500)
  assert_equal 1, new.pos
  assert new.first?
  assert new.last?
end