SoundSoftware Code Site

require File.dirname(__FILE__) + '/test_helper'

class Note < ActiveRecord::Base

  acts_as_nested_set :scope => [:notable_id, :notable_type]

end

class AwesomeNestedSetTest < Test::Unit::TestCase

  class Default < ActiveRecord::Base

    acts_as_nested_set

    set_table_name 'categories'

  end

  class Scoped < ActiveRecord::Base

    acts_as_nested_set :scope => :organization

    set_table_name 'categories'

  end

  def test_left_column_default

    assert_equal 'lft', Default.acts_as_nested_set_options[:left_column]

  end

  def test_right_column_default

    assert_equal 'rgt', Default.acts_as_nested_set_options[:right_column]

  end

  def test_parent_column_default

    assert_equal 'parent_id', Default.acts_as_nested_set_options[:parent_column]

  end

  def test_scope_default

    assert_nil Default.acts_as_nested_set_options[:scope]

  end

  def test_left_column_name

    assert_equal 'lft', Default.left_column_name

    assert_equal 'lft', Default.new.left_column_name

  end

  def test_right_column_name

    assert_equal 'rgt', Default.right_column_name

    assert_equal 'rgt', Default.new.right_column_name

  end

  def test_parent_column_name

    assert_equal 'parent_id', Default.parent_column_name

    assert_equal 'parent_id', Default.new.parent_column_name

  end

  def test_quoted_left_column_name

    quoted = Default.connection.quote_column_name('lft')

    assert_equal quoted, Default.quoted_left_column_name

    assert_equal quoted, Default.new.quoted_left_column_name

  end

  def test_quoted_right_column_name

    quoted = Default.connection.quote_column_name('rgt')

    assert_equal quoted, Default.quoted_right_column_name

    assert_equal quoted, Default.new.quoted_right_column_name

  end

  def test_left_column_protected_from_assignment

    assert_raises(ActiveRecord::ActiveRecordError) { Category.new.lft = 1 }

  end

  def test_right_column_protected_from_assignment

    assert_raises(ActiveRecord::ActiveRecordError) { Category.new.rgt = 1 }

  end

  def test_parent_column_protected_from_assignment

    assert_raises(ActiveRecord::ActiveRecordError) { Category.new.parent_id = 1 }

  end

  def test_colums_protected_on_initialize

    c = Category.new(:lft => 1, :rgt => 2, :parent_id => 3)

    assert_nil c.lft

    assert_nil c.rgt

    assert_nil c.parent_id

  end

  def test_scoped_appends_id

    assert_equal :organization_id, Scoped.acts_as_nested_set_options[:scope]

  end

  def test_roots_class_method

    assert_equal Category.find_all_by_parent_id(nil), Category.roots

  end

  def test_root_class_method

    assert_equal categories(:top_level), Category.root

  end

  def test_root

    assert_equal categories(:top_level), categories(:child_3).root

  end

  def test_root?

    assert categories(:top_level).root?

    assert categories(:top_level_2).root?

  end

  def test_leaves_class_method

    assert_equal Category.find(:all, :conditions => "#{Category.right_column_name} - #{Category.left_column_name} = 1"), Category.leaves

    assert_equal Category.leaves.count, 4

    assert (Category.leaves.include? categories(:child_1))

    assert (Category.leaves.include? categories(:child_2_1))

    assert (Category.leaves.include? categories(:child_3))

    assert (Category.leaves.include? categories(:top_level_2))

  end

  def test_leaf

    assert categories(:child_1).leaf?

    assert categories(:child_2_1).leaf?

    assert categories(:child_3).leaf?

    assert categories(:top_level_2).leaf?

    assert !categories(:top_level).leaf?

    assert !categories(:child_2).leaf?

  end

  def test_parent

    assert_equal categories(:child_2), categories(:child_2_1).parent

  end

  def test_self_and_ancestors

    child = categories(:child_2_1)

    self_and_ancestors = [categories(:top_level), categories(:child_2), child]

    assert_equal self_and_ancestors, child.self_and_ancestors

  end

  def test_ancestors

    child = categories(:child_2_1)

    ancestors = [categories(:top_level), categories(:child_2)]

    assert_equal ancestors, child.ancestors

  end

  def test_self_and_siblings

    child = categories(:child_2)

    self_and_siblings = [categories(:child_1), child, categories(:child_3)]

    assert_equal self_and_siblings, child.self_and_siblings

    assert_nothing_raised do

      tops = [categories(:top_level), categories(:top_level_2)]

      assert_equal tops, categories(:top_level).self_and_siblings

    end

  end

  def test_siblings

    child = categories(:child_2)

    siblings = [categories(:child_1), categories(:child_3)]

    assert_equal siblings, child.siblings

  end

  def test_leaves

    leaves = [categories(:child_1), categories(:child_2_1), categories(:child_3), categories(:top_level_2)]

    assert categories(:top_level).leaves, leaves

  end

  def test_level

    assert_equal 0, categories(:top_level).level

    assert_equal 1, categories(:child_1).level

    assert_equal 2, categories(:child_2_1).level

  end

  def test_has_children?

    assert categories(:child_2_1).children.empty?

    assert !categories(:child_2).children.empty?

    assert !categories(:top_level).children.empty?

  end

  def test_self_and_descendents

    parent = categories(:top_level)

    self_and_descendants = [parent, categories(:child_1), categories(:child_2),

      categories(:child_2_1), categories(:child_3)]

    assert_equal self_and_descendants, parent.self_and_descendants

    assert_equal self_and_descendants, parent.self_and_descendants.count

  end

  def test_descendents

    lawyers = Category.create!(:name => "lawyers")

    us = Category.create!(:name => "United States")

    us.move_to_child_of(lawyers)

    patent = Category.create!(:name => "Patent Law")

    patent.move_to_child_of(us)

    lawyers.reload

    assert_equal 1, lawyers.children.size

    assert_equal 1, us.children.size

    assert_equal 2, lawyers.descendants.size

  end

  def test_self_and_descendents

    parent = categories(:top_level)

    descendants = [categories(:child_1), categories(:child_2),

      categories(:child_2_1), categories(:child_3)]

    assert_equal descendants, parent.descendants

  end

  def test_children

    category = categories(:top_level)

    category.children.each {|c| assert_equal category.id, c.parent_id }

  end

  def test_is_or_is_ancestor_of?

    assert categories(:top_level).is_or_is_ancestor_of?(categories(:child_1))

    assert categories(:top_level).is_or_is_ancestor_of?(categories(:child_2_1))

    assert categories(:child_2).is_or_is_ancestor_of?(categories(:child_2_1))

    assert !categories(:child_2_1).is_or_is_ancestor_of?(categories(:child_2))

    assert !categories(:child_1).is_or_is_ancestor_of?(categories(:child_2))

    assert categories(:child_1).is_or_is_ancestor_of?(categories(:child_1))

  end

  def test_is_ancestor_of?

    assert categories(:top_level).is_ancestor_of?(categories(:child_1))

    assert categories(:top_level).is_ancestor_of?(categories(:child_2_1))

    assert categories(:child_2).is_ancestor_of?(categories(:child_2_1))

    assert !categories(:child_2_1).is_ancestor_of?(categories(:child_2))

    assert !categories(:child_1).is_ancestor_of?(categories(:child_2))

    assert !categories(:child_1).is_ancestor_of?(categories(:child_1))

  end

  def test_is_or_is_ancestor_of_with_scope

    root = Scoped.root

    child = root.children.first

    assert root.is_or_is_ancestor_of?(child)

    child.update_attribute :organization_id, 'different'

    assert !root.is_or_is_ancestor_of?(child)

  end

  def test_is_or_is_descendant_of?

    assert categories(:child_1).is_or_is_descendant_of?(categories(:top_level))

    assert categories(:child_2_1).is_or_is_descendant_of?(categories(:top_level))

    assert categories(:child_2_1).is_or_is_descendant_of?(categories(:child_2))

    assert !categories(:child_2).is_or_is_descendant_of?(categories(:child_2_1))

    assert !categories(:child_2).is_or_is_descendant_of?(categories(:child_1))

    assert categories(:child_1).is_or_is_descendant_of?(categories(:child_1))

  end

  def test_is_descendant_of?

    assert categories(:child_1).is_descendant_of?(categories(:top_level))

    assert categories(:child_2_1).is_descendant_of?(categories(:top_level))

    assert categories(:child_2_1).is_descendant_of?(categories(:child_2))

    assert !categories(:child_2).is_descendant_of?(categories(:child_2_1))

    assert !categories(:child_2).is_descendant_of?(categories(:child_1))

    assert !categories(:child_1).is_descendant_of?(categories(:child_1))

  end

  def test_is_or_is_descendant_of_with_scope

    root = Scoped.root

    child = root.children.first

    assert child.is_or_is_descendant_of?(root)

    child.update_attribute :organization_id, 'different'

    assert !child.is_or_is_descendant_of?(root)

  end

  def test_same_scope?

    root = Scoped.root

    child = root.children.first

    assert child.same_scope?(root)

    child.update_attribute :organization_id, 'different'

    assert !child.same_scope?(root)

  end

  def test_left_sibling

    assert_equal categories(:child_1), categories(:child_2).left_sibling

    assert_equal categories(:child_2), categories(:child_3).left_sibling

  end

  def test_left_sibling_of_root

    assert_nil categories(:top_level).left_sibling

  end

  def test_left_sibling_without_siblings

    assert_nil categories(:child_2_1).left_sibling

  end

  def test_left_sibling_of_leftmost_node

    assert_nil categories(:child_1).left_sibling

  end

  def test_right_sibling

    assert_equal categories(:child_3), categories(:child_2).right_sibling

    assert_equal categories(:child_2), categories(:child_1).right_sibling

  end

  def test_right_sibling_of_root

    assert_equal categories(:top_level_2), categories(:top_level).right_sibling

    assert_nil categories(:top_level_2).right_sibling

  end

  def test_right_sibling_without_siblings

    assert_nil categories(:child_2_1).right_sibling

  end

  def test_right_sibling_of_rightmost_node

    assert_nil categories(:child_3).right_sibling

  end

  def test_move_left

    categories(:child_2).move_left

    assert_nil categories(:child_2).left_sibling

    assert_equal categories(:child_1), categories(:child_2).right_sibling

    assert Category.valid?

  end

  def test_move_right

    categories(:child_2).move_right

    assert_nil categories(:child_2).right_sibling

    assert_equal categories(:child_3), categories(:child_2).left_sibling

    assert Category.valid?

  end

  def test_move_to_left_of

    categories(:child_3).move_to_left_of(categories(:child_1))

    assert_nil categories(:child_3).left_sibling

    assert_equal categories(:child_1), categories(:child_3).right_sibling

    assert Category.valid?

  end

  def test_move_to_right_of

    categories(:child_1).move_to_right_of(categories(:child_3))

    assert_nil categories(:child_1).right_sibling

    assert_equal categories(:child_3), categories(:child_1).left_sibling

    assert Category.valid?

  end

  def test_move_to_root

    categories(:child_2).move_to_root

    assert_nil categories(:child_2).parent

    assert_equal 0, categories(:child_2).level

    assert_equal 1, categories(:child_2_1).level

    assert_equal 1, categories(:child_2).left

    assert_equal 4, categories(:child_2).right

    assert Category.valid?

  end

  def test_move_to_child_of

    categories(:child_1).move_to_child_of(categories(:child_3))

    assert_equal categories(:child_3).id, categories(:child_1).parent_id

    assert Category.valid?

  end

  def test_move_to_child_of_appends_to_end

    child = Category.create! :name => 'New Child'

    child.move_to_child_of categories(:top_level)

    assert_equal child, categories(:top_level).children.last

  end

  def test_subtree_move_to_child_of

    assert_equal 4, categories(:child_2).left

    assert_equal 7, categories(:child_2).right

    assert_equal 2, categories(:child_1).left

    assert_equal 3, categories(:child_1).right

    categories(:child_2).move_to_child_of(categories(:child_1))

    assert Category.valid?

    assert_equal categories(:child_1).id, categories(:child_2).parent_id

    assert_equal 3, categories(:child_2).left

    assert_equal 6, categories(:child_2).right

    assert_equal 2, categories(:child_1).left

    assert_equal 7, categories(:child_1).right    

  end

  def test_slightly_difficult_move_to_child_of

    assert_equal 11, categories(:top_level_2).left

    assert_equal 12, categories(:top_level_2).right

    # create a new top-level node and move single-node top-level tree inside it.

    new_top = Category.create(:name => 'New Top')

    assert_equal 13, new_top.left

    assert_equal 14, new_top.right

    categories(:top_level_2).move_to_child_of(new_top)

    assert Category.valid?

    assert_equal new_top.id, categories(:top_level_2).parent_id

    assert_equal 12, categories(:top_level_2).left

    assert_equal 13, categories(:top_level_2).right

    assert_equal 11, new_top.left

    assert_equal 14, new_top.right    

  end

  def test_difficult_move_to_child_of

    assert_equal 1, categories(:top_level).left

    assert_equal 10, categories(:top_level).right

    assert_equal 5, categories(:child_2_1).left

    assert_equal 6, categories(:child_2_1).right

    # create a new top-level node and move an entire top-level tree inside it.

    new_top = Category.create(:name => 'New Top')

    categories(:top_level).move_to_child_of(new_top)

    categories(:child_2_1).reload

    assert Category.valid?  

    assert_equal new_top.id, categories(:top_level).parent_id

    assert_equal 4, categories(:top_level).left

    assert_equal 13, categories(:top_level).right

    assert_equal 8, categories(:child_2_1).left

    assert_equal 9, categories(:child_2_1).right    

  end

  #rebuild swaps the position of the 2 children when added using move_to_child twice onto same parent

  def test_move_to_child_more_than_once_per_parent_rebuild

    root1 = Category.create(:name => 'Root1')

    root2 = Category.create(:name => 'Root2')

    root3 = Category.create(:name => 'Root3')

    root2.move_to_child_of root1

    root3.move_to_child_of root1

    output = Category.roots.last.to_text

    Category.update_all('lft = null, rgt = null')

    Category.rebuild!

    assert_equal Category.roots.last.to_text, output

  end

  # doing move_to_child twice onto same parent from the furthest right first

  def test_move_to_child_more_than_once_per_parent_outside_in

    node1 = Category.create(:name => 'Node-1')

    node2 = Category.create(:name => 'Node-2')

    node3 = Category.create(:name => 'Node-3')

    node2.move_to_child_of node1

    node3.move_to_child_of node1

    output = Category.roots.last.to_text

    Category.update_all('lft = null, rgt = null')

    Category.rebuild!

    assert_equal Category.roots.last.to_text, output

  end

  def test_valid_with_null_lefts

    assert Category.valid?

    Category.update_all('lft = null')

    assert !Category.valid?

  end

  def test_valid_with_null_rights

    assert Category.valid?

    Category.update_all('rgt = null')

    assert !Category.valid?

  end

  def test_valid_with_missing_intermediate_node

    # Even though child_2_1 will still exist, it is a sign of a sloppy delete, not an invalid tree.

    assert Category.valid?

    Category.delete(categories(:child_2).id)

    assert Category.valid?

  end

  def test_valid_with_overlapping_and_rights

    assert Category.valid?

    categories(:top_level_2)['lft'] = 0

    categories(:top_level_2).save

    assert !Category.valid?

  end

  def test_rebuild

    assert Category.valid?

    before_text = Category.root.to_text

    Category.update_all('lft = null, rgt = null')

    Category.rebuild!

    assert Category.valid?

    assert_equal before_text, Category.root.to_text

  end

  def test_move_possible_for_sibling

    assert categories(:child_2).move_possible?(categories(:child_1))

  end

  def test_move_not_possible_to_self

    assert !categories(:top_level).move_possible?(categories(:top_level))

  end

  def test_move_not_possible_to_parent

    categories(:top_level).descendants.each do |descendant|

      assert !categories(:top_level).move_possible?(descendant)

      assert descendant.move_possible?(categories(:top_level))

    end

  end

  def test_is_or_is_ancestor_of?

    [:child_1, :child_2, :child_2_1, :child_3].each do |c|

      assert categories(:top_level).is_or_is_ancestor_of?(categories(c))

    end

    assert !categories(:top_level).is_or_is_ancestor_of?(categories(:top_level_2))

  end

  def test_left_and_rights_valid_with_blank_left

    assert Category.left_and_rights_valid?

    categories(:child_2)[:lft] = nil

    categories(:child_2).save(false)

    assert !Category.left_and_rights_valid?

  end

  def test_left_and_rights_valid_with_blank_right

    assert Category.left_and_rights_valid?

    categories(:child_2)[:rgt] = nil

    categories(:child_2).save(false)

    assert !Category.left_and_rights_valid?

  end

  def test_left_and_rights_valid_with_equal

    assert Category.left_and_rights_valid?

    categories(:top_level_2)[:lft] = categories(:top_level_2)[:rgt]

    categories(:top_level_2).save(false)

    assert !Category.left_and_rights_valid?

  end

  def test_left_and_rights_valid_with_left_equal_to_parent

    assert Category.left_and_rights_valid?

    categories(:child_2)[:lft] = categories(:top_level)[:lft]

    categories(:child_2).save(false)

    assert !Category.left_and_rights_valid?

  end

  def test_left_and_rights_valid_with_right_equal_to_parent

    assert Category.left_and_rights_valid?

    categories(:child_2)[:rgt] = categories(:top_level)[:rgt]

    categories(:child_2).save(false)

    assert !Category.left_and_rights_valid?

  end

  def test_moving_dirty_objects_doesnt_invalidate_tree

    r1 = Category.create

    r2 = Category.create

    r3 = Category.create

    r4 = Category.create

    nodes = [r1, r2, r3, r4]

    r2.move_to_child_of(r1)

    assert Category.valid?

    r3.move_to_child_of(r1)

    assert Category.valid?

    r4.move_to_child_of(r2)

    assert Category.valid?

  end

  def test_multi_scoped_no_duplicates_for_columns?

    assert_nothing_raised do

      Note.no_duplicates_for_columns?

    end

  end

  def test_multi_scoped_all_roots_valid?

    assert_nothing_raised do

      Note.all_roots_valid?

    end

  end

  def test_multi_scoped

    note1 = Note.create!(:body => "A", :notable_id => 2, :notable_type => 'Category')

    note2 = Note.create!(:body => "B", :notable_id => 2, :notable_type => 'Category')

    note3 = Note.create!(:body => "C", :notable_id => 2, :notable_type => 'Default')

    assert_equal [note1, note2], note1.self_and_siblings

    assert_equal [note3], note3.self_and_siblings

  end

  def test_multi_scoped_rebuild

    root = Note.create!(:body => "A", :notable_id => 3, :notable_type => 'Category')

    child1 = Note.create!(:body => "B", :notable_id => 3, :notable_type => 'Category')

    child2 = Note.create!(:body => "C", :notable_id => 3, :notable_type => 'Category')

    child1.move_to_child_of root

    child2.move_to_child_of root

    Note.update_all('lft = null, rgt = null')

    Note.rebuild!

    assert_equal Note.roots.find_by_body('A'), root

    assert_equal [child1, child2], Note.roots.find_by_body('A').children

  end

  def test_same_scope_with_multi_scopes

    assert_nothing_raised do

      notes(:scope1).same_scope?(notes(:child_1))

    end

    assert notes(:scope1).same_scope?(notes(:child_1))

    assert notes(:child_1).same_scope?(notes(:scope1))

    assert !notes(:scope1).same_scope?(notes(:scope2))

  end

  def test_quoting_of_multi_scope_column_names

    assert_equal ["\"notable_id\"", "\"notable_type\""], Note.quoted_scope_column_names

  end

  def test_equal_in_same_scope

    assert_equal notes(:scope1), notes(:scope1)

    assert_not_equal notes(:scope1), notes(:child_1)

  end

  def test_equal_in_different_scopes

    assert_not_equal notes(:scope1), notes(:scope2)

  end

end