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# frozen_string_literal: true
require 'test/unit'
require 'rubygems'
require 'active_record'
$:.unshift File.dirname(__FILE__) + '/../lib'
require File.dirname(__FILE__) + '/../init'
class Test::Unit::TestCase
def assert_queries(num = 1)
$query_count = 0
yield
ensure
assert_equal num, $query_count, "#{$query_count} instead of #{num} queries were executed."
end
def assert_no_queries(&block)
assert_queries(0, &block)
end
end
ActiveRecord::Base.establish_connection(:adapter => "sqlite3", :dbfile => ":memory:")
# AR keeps printing annoying schema statements
$stdout = StringIO.new
def setup_db
ActiveRecord::Base.logger
ActiveRecord::Schema.define(:version => 1) do
create_table :mixins do |t|
t.column :type, :string
t.column :parent_id, :integer
end
end
end
def teardown_db
ActiveRecord::Base.connection.tables.each do |table|
ActiveRecord::Base.connection.drop_table(table)
end
end
class Mixin < ActiveRecord::Base
end
class TreeMixin < Mixin
acts_as_tree :foreign_key => "parent_id", :order => "id"
end
class TreeMixinWithoutOrder < Mixin
acts_as_tree :foreign_key => "parent_id"
end
class RecursivelyCascadedTreeMixin < Mixin
acts_as_tree :foreign_key => "parent_id"
has_one :first_child, :class_name => 'RecursivelyCascadedTreeMixin', :foreign_key => :parent_id
end
class TreeTest < Test::Unit::TestCase
def setup
setup_db
@root1 = TreeMixin.create!
@root_child1 = TreeMixin.create! :parent_id => @root1.id
@child1_child = TreeMixin.create! :parent_id => @root_child1.id
@root_child2 = TreeMixin.create! :parent_id => @root1.id
@root2 = TreeMixin.create!
@root3 = TreeMixin.create!
end
def teardown
teardown_db
end
def test_children
assert_equal @root1.children, [@root_child1, @root_child2]
assert_equal @root_child1.children, [@child1_child]
assert_equal @child1_child.children, []
assert_equal @root_child2.children, []
end
def test_parent
assert_equal @root_child1.parent, @root1
assert_equal @root_child1.parent, @root_child2.parent
assert_nil @root1.parent
end
def test_delete
assert_equal 6, TreeMixin.count
@root1.destroy
assert_equal 2, TreeMixin.count
@root2.destroy
@root3.destroy
assert_equal 0, TreeMixin.count
end
def test_insert
@extra = @root1.children.create
assert @extra
assert_equal @extra.parent, @root1
assert_equal 3, @root1.children.size
assert @root1.children.include?(@extra)
assert @root1.children.include?(@root_child1)
assert @root1.children.include?(@root_child2)
end
def test_ancestors
assert_equal [], @root1.ancestors
assert_equal [@root1], @root_child1.ancestors
assert_equal [@root_child1, @root1], @child1_child.ancestors
assert_equal [@root1], @root_child2.ancestors
assert_equal [], @root2.ancestors
assert_equal [], @root3.ancestors
end
def test_root
assert_equal @root1, TreeMixin.root
assert_equal @root1, @root1.root
assert_equal @root1, @root_child1.root
assert_equal @root1, @child1_child.root
assert_equal @root1, @root_child2.root
assert_equal @root2, @root2.root
assert_equal @root3, @root3.root
end
def test_roots
assert_equal [@root1, @root2, @root3], TreeMixin.roots
end
def test_siblings
assert_equal [@root2, @root3], @root1.siblings
assert_equal [@root_child2], @root_child1.siblings
assert_equal [], @child1_child.siblings
assert_equal [@root_child1], @root_child2.siblings
assert_equal [@root1, @root3], @root2.siblings
assert_equal [@root1, @root2], @root3.siblings
end
def test_self_and_siblings
assert_equal [@root1, @root2, @root3], @root1.self_and_siblings
assert_equal [@root_child1, @root_child2], @root_child1.self_and_siblings
assert_equal [@child1_child], @child1_child.self_and_siblings
assert_equal [@root_child1, @root_child2], @root_child2.self_and_siblings
assert_equal [@root1, @root2, @root3], @root2.self_and_siblings
assert_equal [@root1, @root2, @root3], @root3.self_and_siblings
end
end
class TreeTestWithEagerLoading < Test::Unit::TestCase
def setup
teardown_db
setup_db
@root1 = TreeMixin.create!
@root_child1 = TreeMixin.create! :parent_id => @root1.id
@child1_child = TreeMixin.create! :parent_id => @root_child1.id
@root_child2 = TreeMixin.create! :parent_id => @root1.id
@root2 = TreeMixin.create!
@root3 = TreeMixin.create!
@rc1 = RecursivelyCascadedTreeMixin.create!
@rc2 = RecursivelyCascadedTreeMixin.create! :parent_id => @rc1.id
@rc3 = RecursivelyCascadedTreeMixin.create! :parent_id => @rc2.id
@rc4 = RecursivelyCascadedTreeMixin.create! :parent_id => @rc3.id
end
def teardown
teardown_db
end
def test_eager_association_loading
roots = TreeMixin.find(:all, :include => :children, :conditions => "mixins.parent_id IS NULL", :order => "mixins.id")
assert_equal [@root1, @root2, @root3], roots
assert_no_queries do
assert_equal 2, roots[0].children.size
assert_equal 0, roots[1].children.size
assert_equal 0, roots[2].children.size
end
end
def test_eager_association_loading_with_recursive_cascading_three_levels_has_many
root_node = RecursivelyCascadedTreeMixin.find(:first, :include => { :children => { :children => :children } }, :order => 'mixins.id')
assert_equal @rc4, assert_no_queries { root_node.children.first.children.first.children.first }
end
def test_eager_association_loading_with_recursive_cascading_three_levels_has_one
root_node = RecursivelyCascadedTreeMixin.find(:first, :include => { :first_child => { :first_child => :first_child } }, :order => 'mixins.id')
assert_equal @rc4, assert_no_queries { root_node.first_child.first_child.first_child }
end
def test_eager_association_loading_with_recursive_cascading_three_levels_belongs_to
leaf_node = RecursivelyCascadedTreeMixin.find(:first, :include => { :parent => { :parent => :parent } }, :order => 'mixins.id DESC')
assert_equal @rc1, assert_no_queries { leaf_node.parent.parent.parent }
end
end
class TreeTestWithoutOrder < Test::Unit::TestCase
def setup
setup_db
@root1 = TreeMixinWithoutOrder.create!
@root2 = TreeMixinWithoutOrder.create!
end
def teardown
teardown_db
end
def test_root
assert [@root1, @root2].include?(TreeMixinWithoutOrder.root)
end
def test_roots
assert_equal [], [@root1, @root2] - TreeMixinWithoutOrder.roots
end
end