792 lines
23 KiB
Ruby
792 lines
23 KiB
Ruby
require "cases/helper"
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require 'models/tag'
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require 'models/tagging'
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require 'models/post'
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require 'models/topic'
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require 'models/comment'
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require 'models/reply'
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require 'models/author'
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require 'models/comment'
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require 'models/entrant'
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require 'models/developer'
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require 'models/company'
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require 'models/bird'
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require 'models/car'
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require 'models/engine'
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require 'models/tyre'
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require 'models/minivan'
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class RelationTest < ActiveRecord::TestCase
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fixtures :authors, :topics, :entrants, :developers, :companies, :developers_projects, :accounts, :categories, :categorizations, :posts, :comments,
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:tags, :taggings, :cars, :minivans
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def test_do_not_double_quote_string_id
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van = Minivan.last
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assert van
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assert_equal van.id, Minivan.where(:minivan_id => van).to_a.first.minivan_id
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end
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def test_bind_values
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relation = Post.scoped
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assert_equal [], relation.bind_values
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relation2 = relation.bind 'foo'
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assert_equal %w{ foo }, relation2.bind_values
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assert_equal [], relation.bind_values
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end
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def test_two_named_scopes_with_includes_should_not_drop_any_include
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car = Car.incl_engines.incl_tyres.first
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assert_no_queries { car.tyres.length }
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assert_no_queries { car.engines.length }
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end
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def test_dynamic_finder
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x = Post.where('author_id = ?', 1)
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assert x.klass.respond_to?(:find_by_id), '@klass should handle dynamic finders'
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end
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def test_multivalue_where
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posts = Post.where('author_id = ? AND id = ?', 1, 1)
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assert_equal 1, posts.to_a.size
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end
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def test_scoped
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topics = Topic.scoped
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assert_kind_of ActiveRecord::Relation, topics
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assert_equal 4, topics.size
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end
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def test_to_json
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assert_nothing_raised { Bird.scoped.to_json }
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assert_nothing_raised { Bird.scoped.all.to_json }
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end
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def test_to_yaml
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assert_nothing_raised { Bird.scoped.to_yaml }
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assert_nothing_raised { Bird.scoped.all.to_yaml }
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end
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def test_to_xml
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assert_nothing_raised { Bird.scoped.to_xml }
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assert_nothing_raised { Bird.scoped.all.to_xml }
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end
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def test_scoped_all
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topics = Topic.scoped.all
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assert_kind_of Array, topics
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assert_no_queries { assert_equal 4, topics.size }
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end
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def test_loaded_all
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topics = Topic.scoped
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assert_queries(1) do
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2.times { assert_equal 4, topics.all.size }
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end
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assert topics.loaded?
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end
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def test_scoped_first
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topics = Topic.scoped.order('id ASC')
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assert_queries(1) do
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2.times { assert_equal "The First Topic", topics.first.title }
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end
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assert ! topics.loaded?
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end
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def test_loaded_first
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topics = Topic.scoped.order('id ASC')
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assert_queries(1) do
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topics.all # force load
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2.times { assert_equal "The First Topic", topics.first.title }
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end
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assert topics.loaded?
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end
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def test_reload
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topics = Topic.scoped
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assert_queries(1) do
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2.times { topics.to_a }
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end
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assert topics.loaded?
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original_size = topics.to_a.size
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Topic.create! :title => 'fake'
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assert_queries(1) { topics.reload }
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assert_equal original_size + 1, topics.size
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assert topics.loaded?
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end
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def test_finding_with_conditions
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assert_equal ["David"], Author.where(:name => 'David').map(&:name)
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assert_equal ['Mary'], Author.where(["name = ?", 'Mary']).map(&:name)
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assert_equal ['Mary'], Author.where("name = ?", 'Mary').map(&:name)
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end
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def test_finding_with_order
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topics = Topic.order('id')
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assert_equal 4, topics.to_a.size
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assert_equal topics(:first).title, topics.first.title
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end
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def test_finding_with_order_concatenated
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topics = Topic.order('author_name').order('title')
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assert_equal 4, topics.to_a.size
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assert_equal topics(:fourth).title, topics.first.title
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end
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def test_finding_with_order_and_take
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entrants = Entrant.order("id ASC").limit(2).to_a
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assert_equal 2, entrants.size
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assert_equal entrants(:first).name, entrants.first.name
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end
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def test_finding_with_complex_order_and_limit
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tags = Tag.includes(:taggings).order("REPLACE('abc', taggings.taggable_type, taggings.taggable_type)").limit(1).to_a
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assert_equal 1, tags.length
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end
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def test_finding_with_complex_order
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tags = Tag.includes(:taggings).order("REPLACE('abc', taggings.taggable_type, taggings.taggable_type)").to_a
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assert_equal 2, tags.length
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end
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def test_finding_with_order_limit_and_offset
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entrants = Entrant.order("id ASC").limit(2).offset(1)
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assert_equal 2, entrants.to_a.size
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assert_equal entrants(:second).name, entrants.first.name
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entrants = Entrant.order("id ASC").limit(2).offset(2)
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assert_equal 1, entrants.to_a.size
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assert_equal entrants(:third).name, entrants.first.name
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end
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def test_finding_with_group
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developers = Developer.group("salary").select("salary").to_a
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assert_equal 4, developers.size
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assert_equal 4, developers.map(&:salary).uniq.size
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end
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def test_select_with_block
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even_ids = Developer.scoped.select {|d| d.id % 2 == 0 }.map(&:id)
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assert_equal [2, 4, 6, 8, 10], even_ids.sort
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end
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def test_finding_with_hash_conditions_on_joined_table
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firms = DependentFirm.joins(:account).where({:name => 'RailsCore', :accounts => { :credit_limit => 55..60 }}).to_a
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assert_equal 1, firms.size
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assert_equal companies(:rails_core), firms.first
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end
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def test_find_all_with_join
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developers_on_project_one = Developer.joins('LEFT JOIN developers_projects ON developers.id = developers_projects.developer_id').
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where('project_id=1').to_a
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assert_equal 3, developers_on_project_one.length
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developer_names = developers_on_project_one.map { |d| d.name }
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assert developer_names.include?('David')
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assert developer_names.include?('Jamis')
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end
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def test_find_on_hash_conditions
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assert_equal Topic.find(:all, :conditions => {:approved => false}), Topic.where({ :approved => false }).to_a
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end
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def test_joins_with_string_array
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person_with_reader_and_post = Post.joins([
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"INNER JOIN categorizations ON categorizations.post_id = posts.id",
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"INNER JOIN categories ON categories.id = categorizations.category_id AND categories.type = 'SpecialCategory'"
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]
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).to_a
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assert_equal 1, person_with_reader_and_post.size
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end
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def test_scoped_responds_to_delegated_methods
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relation = Topic.scoped
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["map", "uniq", "sort", "insert", "delete", "update"].each do |method|
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assert_respond_to relation, method, "Topic.scoped should respond to #{method.inspect}"
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end
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end
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def test_respond_to_delegates_to_relation
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relation = Topic.scoped
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fake_arel = Struct.new(:responds) {
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def respond_to? method, access = false
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responds << [method, access]
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end
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}.new []
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relation.extend(Module.new { attr_accessor :arel })
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relation.arel = fake_arel
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relation.respond_to?(:matching_attributes)
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assert_equal [:matching_attributes, false], fake_arel.responds.first
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fake_arel.responds = []
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relation.respond_to?(:matching_attributes, true)
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assert_equal [:matching_attributes, true], fake_arel.responds.first
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end
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def test_respond_to_dynamic_finders
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relation = Topic.scoped
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["find_by_title", "find_by_title_and_author_name", "find_or_create_by_title", "find_or_initialize_by_title_and_author_name"].each do |method|
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assert_respond_to relation, method, "Topic.scoped should respond to #{method.inspect}"
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end
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end
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def test_respond_to_class_methods_and_named_scopes
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assert DeveloperOrderedBySalary.scoped.respond_to?(:all_ordered_by_name)
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assert Topic.scoped.respond_to?(:by_lifo)
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end
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def test_find_with_readonly_option
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Developer.scoped.each { |d| assert !d.readonly? }
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Developer.scoped.readonly.each { |d| assert d.readonly? }
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end
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def test_eager_association_loading_of_stis_with_multiple_references
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authors = Author.eager_load(:posts => { :special_comments => { :post => [ :special_comments, :very_special_comment ] } }).
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order('comments.body, very_special_comments_posts.body').where('posts.id = 4').to_a
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assert_equal [authors(:david)], authors
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assert_no_queries do
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authors.first.posts.first.special_comments.first.post.special_comments
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authors.first.posts.first.special_comments.first.post.very_special_comment
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end
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end
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def test_find_with_preloaded_associations
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assert_queries(2) do
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posts = Post.preload(:comments)
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assert posts.first.comments.first
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end
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assert_queries(2) do
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posts = Post.preload(:comments).to_a
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assert posts.first.comments.first
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end
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assert_queries(2) do
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posts = Post.preload(:author)
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assert posts.first.author
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end
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assert_queries(2) do
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posts = Post.preload(:author).to_a
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assert posts.first.author
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end
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assert_queries(3) do
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posts = Post.preload(:author, :comments).to_a
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assert posts.first.author
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assert posts.first.comments.first
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end
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end
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def test_find_with_included_associations
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assert_queries(2) do
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posts = Post.includes(:comments)
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assert posts.first.comments.first
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end
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assert_queries(2) do
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posts = Post.scoped.includes(:comments)
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assert posts.first.comments.first
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end
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assert_queries(2) do
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posts = Post.includes(:author)
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assert posts.first.author
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end
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assert_queries(3) do
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posts = Post.includes(:author, :comments).to_a
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assert posts.first.author
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assert posts.first.comments.first
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end
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end
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def test_default_scope_with_conditions_string
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assert_equal Developer.find_all_by_name('David').map(&:id).sort, DeveloperCalledDavid.scoped.map(&:id).sort
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assert_nil DeveloperCalledDavid.create!.name
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end
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def test_default_scope_with_conditions_hash
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assert_equal Developer.find_all_by_name('Jamis').map(&:id).sort, DeveloperCalledJamis.scoped.map(&:id).sort
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assert_equal 'Jamis', DeveloperCalledJamis.create!.name
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end
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def test_default_scoping_finder_methods
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developers = DeveloperCalledDavid.order('id').map(&:id).sort
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assert_equal Developer.find_all_by_name('David').map(&:id).sort, developers
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end
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def test_loading_with_one_association
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posts = Post.preload(:comments)
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post = posts.find { |p| p.id == 1 }
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assert_equal 2, post.comments.size
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assert post.comments.include?(comments(:greetings))
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post = Post.where("posts.title = 'Welcome to the weblog'").preload(:comments).first
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assert_equal 2, post.comments.size
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assert post.comments.include?(comments(:greetings))
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posts = Post.preload(:last_comment)
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post = posts.find { |p| p.id == 1 }
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assert_equal Post.find(1).last_comment, post.last_comment
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end
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def test_loading_with_one_association_with_non_preload
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posts = Post.eager_load(:last_comment).order('comments.id DESC')
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post = posts.find { |p| p.id == 1 }
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assert_equal Post.find(1).last_comment, post.last_comment
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end
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def test_dynamic_find_by_attributes
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david = authors(:david)
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author = Author.preload(:taggings).find_by_id(david.id)
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expected_taggings = taggings(:welcome_general, :thinking_general)
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assert_no_queries do
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assert_equal expected_taggings, author.taggings.uniq.sort_by { |t| t.id }
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end
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authors = Author.scoped
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assert_equal david, authors.find_by_id_and_name(david.id, david.name)
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assert_equal david, authors.find_by_id_and_name!(david.id, david.name)
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end
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def test_dynamic_find_by_attributes_bang
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author = Author.scoped.find_by_id!(authors(:david).id)
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assert_equal "David", author.name
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assert_raises(ActiveRecord::RecordNotFound) { Author.scoped.find_by_id_and_name!(20, 'invalid') }
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end
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def test_dynamic_find_all_by_attributes
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authors = Author.scoped
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davids = authors.find_all_by_name('David')
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assert_kind_of Array, davids
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assert_equal [authors(:david)], davids
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end
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def test_dynamic_find_or_initialize_by_attributes
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authors = Author.scoped
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lifo = authors.find_or_initialize_by_name('Lifo')
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assert_equal "Lifo", lifo.name
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assert !lifo.persisted?
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assert_equal authors(:david), authors.find_or_initialize_by_name(:name => 'David')
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end
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def test_dynamic_find_or_create_by_attributes
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authors = Author.scoped
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lifo = authors.find_or_create_by_name('Lifo')
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assert_equal "Lifo", lifo.name
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assert lifo.persisted?
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assert_equal authors(:david), authors.find_or_create_by_name(:name => 'David')
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end
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def test_find_id
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authors = Author.scoped
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david = authors.find(authors(:david).id)
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assert_equal 'David', david.name
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assert_raises(ActiveRecord::RecordNotFound) { authors.where(:name => 'lifo').find('42') }
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end
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def test_find_ids
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authors = Author.order('id ASC')
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results = authors.find(authors(:david).id, authors(:mary).id)
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assert_kind_of Array, results
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assert_equal 2, results.size
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assert_equal 'David', results[0].name
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assert_equal 'Mary', results[1].name
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assert_equal results, authors.find([authors(:david).id, authors(:mary).id])
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assert_raises(ActiveRecord::RecordNotFound) { authors.where(:name => 'lifo').find(authors(:david).id, '42') }
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assert_raises(ActiveRecord::RecordNotFound) { authors.find(['42', 43]) }
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end
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def test_find_in_empty_array
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authors = Author.scoped.where(:id => [])
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assert_blank authors.all
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end
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def test_where_with_ar_object
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author = Author.first
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authors = Author.scoped.where(:id => author)
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assert_equal 1, authors.all.length
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end
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def test_find_with_list_of_ar
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author = Author.first
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authors = Author.find([author])
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assert_equal author, authors.first
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end
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class Mary < Author; end
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def test_find_by_classname
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Author.create!(:name => Mary.name)
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assert_equal 1, Author.where(:name => Mary).size
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end
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def test_find_by_id_with_list_of_ar
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author = Author.first
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authors = Author.find_by_id([author])
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assert_equal author, authors
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end
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def test_find_all_using_where_twice_should_or_the_relation
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david = authors(:david)
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relation = Author.unscoped
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relation = relation.where(:name => david.name)
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relation = relation.where(:name => 'Santiago')
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relation = relation.where(:id => david.id)
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assert_equal [david], relation.all
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end
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def test_find_all_with_multiple_ors
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david = authors(:david)
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relation = [
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{ :name => david.name },
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{ :name => 'Santiago' },
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{ :name => 'tenderlove' },
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].inject(Author.unscoped) do |memo, param|
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memo.where(param)
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end
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assert_equal [david], relation.all
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end
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def test_exists
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davids = Author.where(:name => 'David')
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assert davids.exists?
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assert davids.exists?(authors(:david).id)
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assert ! davids.exists?(authors(:mary).id)
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assert ! davids.exists?("42")
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assert ! davids.exists?(42)
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fake = Author.where(:name => 'fake author')
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assert ! fake.exists?
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assert ! fake.exists?(authors(:david).id)
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end
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def test_last
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authors = Author.scoped
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assert_equal authors(:mary), authors.last
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end
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def test_destroy_all
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davids = Author.where(:name => 'David')
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# Force load
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assert_equal [authors(:david)], davids.to_a
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assert davids.loaded?
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assert_difference('Author.count', -1) { davids.destroy_all }
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assert_equal [], davids.to_a
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assert davids.loaded?
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end
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def test_delete_all
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davids = Author.where(:name => 'David')
|
|
|
|
assert_difference('Author.count', -1) { davids.delete_all }
|
|
assert ! davids.loaded?
|
|
end
|
|
|
|
def test_delete_all_loaded
|
|
davids = Author.where(:name => 'David')
|
|
|
|
# Force load
|
|
assert_equal [authors(:david)], davids.to_a
|
|
assert davids.loaded?
|
|
|
|
assert_difference('Author.count', -1) { davids.delete_all }
|
|
|
|
assert_equal [], davids.to_a
|
|
assert davids.loaded?
|
|
end
|
|
|
|
def test_select_argument_error
|
|
assert_raises(ArgumentError) { Developer.select }
|
|
end
|
|
|
|
def test_relation_merging
|
|
devs = Developer.where("salary >= 80000") & Developer.limit(2) & Developer.order('id ASC').where("id < 3")
|
|
assert_equal [developers(:david), developers(:jamis)], devs.to_a
|
|
|
|
dev_with_count = Developer.limit(1) & Developer.order('id DESC') & Developer.select('developers.*')
|
|
assert_equal [developers(:poor_jamis)], dev_with_count.to_a
|
|
end
|
|
|
|
def test_relation_merging_with_eager_load
|
|
relations = []
|
|
relations << (Post.order('comments.id DESC') & Post.eager_load(:last_comment) & Post.scoped)
|
|
relations << (Post.eager_load(:last_comment) & Post.order('comments.id DESC') & Post.scoped)
|
|
|
|
relations.each do |posts|
|
|
post = posts.find { |p| p.id == 1 }
|
|
assert_equal Post.find(1).last_comment, post.last_comment
|
|
end
|
|
end
|
|
|
|
def test_relation_merging_with_locks
|
|
devs = Developer.lock.where("salary >= 80000").order("id DESC") & Developer.limit(2)
|
|
assert_present devs.locked
|
|
end
|
|
|
|
def test_relation_merging_with_preload
|
|
[Post.scoped & Post.preload(:author), Post.preload(:author) & Post.scoped].each do |posts|
|
|
assert_queries(2) { assert posts.first.author }
|
|
end
|
|
end
|
|
|
|
def test_relation_merging_with_joins
|
|
comments = Comment.joins(:post).where(:body => 'Thank you for the welcome') & Post.where(:body => 'Such a lovely day')
|
|
assert_equal 1, comments.count
|
|
end
|
|
|
|
def test_count
|
|
posts = Post.scoped
|
|
|
|
assert_equal 7, posts.count
|
|
assert_equal 7, posts.count(:all)
|
|
assert_equal 7, posts.count(:id)
|
|
|
|
assert_equal 1, posts.where('comments_count > 1').count
|
|
assert_equal 5, posts.where(:comments_count => 0).count
|
|
end
|
|
|
|
def test_count_with_distinct
|
|
posts = Post.scoped
|
|
|
|
assert_equal 3, posts.count(:comments_count, :distinct => true)
|
|
assert_equal 7, posts.count(:comments_count, :distinct => false)
|
|
|
|
assert_equal 3, posts.select(:comments_count).count(:distinct => true)
|
|
assert_equal 7, posts.select(:comments_count).count(:distinct => false)
|
|
end
|
|
|
|
def test_count_explicit_columns
|
|
Post.update_all(:comments_count => nil)
|
|
posts = Post.scoped
|
|
|
|
assert_equal [0], posts.select('comments_count').where('id is not null').group('id').order('id').count.values.uniq
|
|
assert_equal 0, posts.where('id is not null').select('comments_count').count
|
|
|
|
assert_equal 7, posts.select('comments_count').count('id')
|
|
assert_equal 0, posts.select('comments_count').count
|
|
assert_equal 0, posts.count(:comments_count)
|
|
assert_equal 0, posts.count('comments_count')
|
|
end
|
|
|
|
def test_multiple_selects
|
|
post = Post.scoped.select('comments_count').select('title').order("id ASC").first
|
|
assert_equal "Welcome to the weblog", post.title
|
|
assert_equal 2, post.comments_count
|
|
end
|
|
|
|
def test_size
|
|
posts = Post.scoped
|
|
|
|
assert_queries(1) { assert_equal 7, posts.size }
|
|
assert ! posts.loaded?
|
|
|
|
best_posts = posts.where(:comments_count => 0)
|
|
best_posts.to_a # force load
|
|
assert_no_queries { assert_equal 5, best_posts.size }
|
|
end
|
|
|
|
def test_count_complex_chained_relations
|
|
posts = Post.select('comments_count').where('id is not null').group("author_id").where("comments_count > 0")
|
|
|
|
expected = { 1 => 2 }
|
|
assert_equal expected, posts.count
|
|
end
|
|
|
|
def test_any
|
|
posts = Post.scoped
|
|
|
|
assert_queries(3) do
|
|
assert posts.any? # Uses COUNT()
|
|
assert ! posts.where(:id => nil).any?
|
|
|
|
assert posts.any? {|p| p.id > 0 }
|
|
assert ! posts.any? {|p| p.id <= 0 }
|
|
end
|
|
|
|
assert posts.loaded?
|
|
end
|
|
|
|
def test_many
|
|
posts = Post.scoped
|
|
|
|
assert_queries(2) do
|
|
assert posts.many? # Uses COUNT()
|
|
assert posts.many? {|p| p.id > 0 }
|
|
assert ! posts.many? {|p| p.id < 2 }
|
|
end
|
|
|
|
assert posts.loaded?
|
|
end
|
|
|
|
def test_many_with_limits
|
|
posts = Post.scoped
|
|
|
|
assert posts.many?
|
|
assert ! posts.limit(1).many?
|
|
end
|
|
|
|
def test_build
|
|
posts = Post.scoped
|
|
|
|
post = posts.new
|
|
assert_kind_of Post, post
|
|
end
|
|
|
|
def test_scoped_build
|
|
posts = Post.where(:title => 'You told a lie')
|
|
|
|
post = posts.new
|
|
assert_kind_of Post, post
|
|
assert_equal 'You told a lie', post.title
|
|
end
|
|
|
|
def test_create
|
|
birds = Bird.scoped
|
|
|
|
sparrow = birds.create
|
|
assert_kind_of Bird, sparrow
|
|
assert !sparrow.persisted?
|
|
|
|
hen = birds.where(:name => 'hen').create
|
|
assert hen.persisted?
|
|
assert_equal 'hen', hen.name
|
|
end
|
|
|
|
def test_create_bang
|
|
birds = Bird.scoped
|
|
|
|
assert_raises(ActiveRecord::RecordInvalid) { birds.create! }
|
|
|
|
hen = birds.where(:name => 'hen').create!
|
|
assert_kind_of Bird, hen
|
|
assert hen.persisted?
|
|
assert_equal 'hen', hen.name
|
|
end
|
|
|
|
def test_explicit_create_scope
|
|
hens = Bird.where(:name => 'hen')
|
|
assert_equal 'hen', hens.new.name
|
|
|
|
hens = hens.create_with(:name => 'cock')
|
|
assert_equal 'cock', hens.new.name
|
|
end
|
|
|
|
def test_except
|
|
relation = Post.where(:author_id => 1).order('id ASC').limit(1)
|
|
assert_equal [posts(:welcome)], relation.all
|
|
|
|
author_posts = relation.except(:order, :limit)
|
|
assert_equal Post.where(:author_id => 1).all, author_posts.all
|
|
|
|
all_posts = relation.except(:where, :order, :limit)
|
|
assert_equal Post.all, all_posts.all
|
|
end
|
|
|
|
def test_only
|
|
relation = Post.where(:author_id => 1).order('id ASC').limit(1)
|
|
assert_equal [posts(:welcome)], relation.all
|
|
|
|
author_posts = relation.only(:where)
|
|
assert_equal Post.where(:author_id => 1).all, author_posts.all
|
|
|
|
all_posts = relation.only(:limit)
|
|
assert_equal Post.limit(1).all.first, all_posts.first
|
|
end
|
|
|
|
def test_anonymous_extension
|
|
relation = Post.where(:author_id => 1).order('id ASC').extending do
|
|
def author
|
|
'lifo'
|
|
end
|
|
end
|
|
|
|
assert_equal "lifo", relation.author
|
|
assert_equal "lifo", relation.limit(1).author
|
|
end
|
|
|
|
def test_named_extension
|
|
relation = Post.where(:author_id => 1).order('id ASC').extending(Post::NamedExtension)
|
|
assert_equal "lifo", relation.author
|
|
assert_equal "lifo", relation.limit(1).author
|
|
end
|
|
|
|
def test_order_by_relation_attribute
|
|
assert_equal Post.order(Post.arel_table[:title]).all, Post.order("title").all
|
|
end
|
|
|
|
def test_order_with_find_with_order
|
|
assert_equal 'zyke', CoolCar.order('name desc').find(:first, :order => 'id').name
|
|
assert_equal 'zyke', FastCar.order('name desc').find(:first, :order => 'id').name
|
|
end
|
|
|
|
def test_default_scope_order_with_named_scope_order
|
|
assert_equal 'zyke', CoolCar.order_using_new_style.limit(1).first.name
|
|
assert_equal 'zyke', CoolCar.order_using_old_style.limit(1).first.name
|
|
assert_equal 'zyke', FastCar.order_using_new_style.limit(1).first.name
|
|
assert_equal 'zyke', FastCar.order_using_old_style.limit(1).first.name
|
|
end
|
|
|
|
def test_order_using_scoping
|
|
car1 = CoolCar.order('id DESC').scoping do
|
|
CoolCar.find(:first, :order => 'id asc')
|
|
end
|
|
assert_equal 'zyke', car1.name
|
|
|
|
car2 = FastCar.order('id DESC').scoping do
|
|
FastCar.find(:first, :order => 'id asc')
|
|
end
|
|
assert_equal 'zyke', car2.name
|
|
end
|
|
|
|
def test_unscoped_block_style
|
|
assert_equal 'honda', CoolCar.unscoped { CoolCar.order_using_new_style.limit(1).first.name}
|
|
assert_equal 'honda', CoolCar.unscoped { CoolCar.order_using_old_style.limit(1).first.name}
|
|
|
|
assert_equal 'honda', FastCar.unscoped { FastCar.order_using_new_style.limit(1).first.name}
|
|
assert_equal 'honda', FastCar.unscoped { FastCar.order_using_old_style.limit(1).first.name}
|
|
end
|
|
|
|
def test_intersection_with_array
|
|
relation = Author.where(:name => "David")
|
|
rails_author = relation.first
|
|
|
|
assert_equal [rails_author], [rails_author] & relation
|
|
assert_equal [rails_author], relation & [rails_author]
|
|
end
|
|
end
|