Split associations_test.rb into multiple files based on association type. [Pratik]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@9233 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

1 files changed, 653 insertions, 0 deletions

diff --git a/activerecord/test/cases/associations/has_and_belongs_to_many_associations_test.rb b/activerecord/test/cases/associations/has_and_belongs_to_many_associations_test.rb
new file mode 100644
index 0000000000..7867727e2c
--- /dev/null
+++ b/activerecord/test/cases/associations/has_and_belongs_to_many_associations_test.rb
@@ -0,0 +1,653 @@
+require "cases/helper"
+require 'models/developer'
+require 'models/project'
+require 'models/company'
+require 'models/topic'
+require 'models/reply'
+require 'models/computer'
+require 'models/customer'
+require 'models/order'
+require 'models/categorization'
+require 'models/category'
+require 'models/post'
+require 'models/author'
+require 'models/comment'
+require 'models/tag'
+require 'models/tagging'
+require 'models/person'
+require 'models/reader'
+require 'models/parrot'
+require 'models/pirate'
+require 'models/treasure'
+require 'models/price_estimate'
+require 'models/club'
+require 'models/member'
+require 'models/membership'
+require 'models/sponsor'
+
+class ProjectWithAfterCreateHook < ActiveRecord::Base
+  set_table_name 'projects'
+  has_and_belongs_to_many :developers,
+    :class_name => "DeveloperForProjectWithAfterCreateHook",
+    :join_table => "developers_projects",
+    :foreign_key => "project_id",
+    :association_foreign_key => "developer_id"
+
+  after_create :add_david
+
+  def add_david
+    david = DeveloperForProjectWithAfterCreateHook.find_by_name('David')
+    david.projects << self
+  end
+end
+
+class DeveloperForProjectWithAfterCreateHook < ActiveRecord::Base
+  set_table_name 'developers'
+  has_and_belongs_to_many :projects,
+    :class_name => "ProjectWithAfterCreateHook",
+    :join_table => "developers_projects",
+    :association_foreign_key => "project_id",
+    :foreign_key => "developer_id"
+end
+
+
+class HasAndBelongsToManyAssociationsTest < ActiveRecord::TestCase
+  fixtures :accounts, :companies, :categories, :posts, :categories_posts, :developers, :projects, :developers_projects,
+           :parrots, :pirates, :treasures, :price_estimates
+
+  def test_has_and_belongs_to_many
+    david = Developer.find(1)
+
+    assert !david.projects.empty?
+    assert_equal 2, david.projects.size
+
+    active_record = Project.find(1)
+    assert !active_record.developers.empty?
+    assert_equal 3, active_record.developers.size
+    assert active_record.developers.include?(david)
+  end
+
+  def test_triple_equality
+    assert !(Array === Developer.find(1).projects)
+    assert Developer.find(1).projects === Array
+  end
+
+  def test_adding_single
+    jamis = Developer.find(2)
+    jamis.projects.reload # causing the collection to load
+    action_controller = Project.find(2)
+    assert_equal 1, jamis.projects.size
+    assert_equal 1, action_controller.developers.size
+
+    jamis.projects << action_controller
+
+    assert_equal 2, jamis.projects.size
+    assert_equal 2, jamis.projects(true).size
+    assert_equal 2, action_controller.developers(true).size
+  end
+
+  def test_adding_type_mismatch
+    jamis = Developer.find(2)
+    assert_raise(ActiveRecord::AssociationTypeMismatch) { jamis.projects << nil }
+    assert_raise(ActiveRecord::AssociationTypeMismatch) { jamis.projects << 1 }
+  end
+
+  def test_adding_from_the_project
+    jamis = Developer.find(2)
+    action_controller = Project.find(2)
+    action_controller.developers.reload
+    assert_equal 1, jamis.projects.size
+    assert_equal 1, action_controller.developers.size
+
+    action_controller.developers << jamis
+
+    assert_equal 2, jamis.projects(true).size
+    assert_equal 2, action_controller.developers.size
+    assert_equal 2, action_controller.developers(true).size
+  end
+
+  def test_adding_from_the_project_fixed_timestamp
+    jamis = Developer.find(2)
+    action_controller = Project.find(2)
+    action_controller.developers.reload
+    assert_equal 1, jamis.projects.size
+    assert_equal 1, action_controller.developers.size
+    updated_at = jamis.updated_at
+
+    action_controller.developers << jamis
+
+    assert_equal updated_at, jamis.updated_at
+    assert_equal 2, jamis.projects(true).size
+    assert_equal 2, action_controller.developers.size
+    assert_equal 2, action_controller.developers(true).size
+  end
+
+  def test_adding_multiple
+    aredridel = Developer.new("name" => "Aredridel")
+    aredridel.save
+    aredridel.projects.reload
+    aredridel.projects.push(Project.find(1), Project.find(2))
+    assert_equal 2, aredridel.projects.size
+    assert_equal 2, aredridel.projects(true).size
+  end
+
+  def test_adding_a_collection
+    aredridel = Developer.new("name" => "Aredridel")
+    aredridel.save
+    aredridel.projects.reload
+    aredridel.projects.concat([Project.find(1), Project.find(2)])
+    assert_equal 2, aredridel.projects.size
+    assert_equal 2, aredridel.projects(true).size
+  end
+
+  def test_adding_uses_default_values_on_join_table
+    ac = projects(:action_controller)
+    assert !developers(:jamis).projects.include?(ac)
+    developers(:jamis).projects << ac
+
+    assert developers(:jamis, :reload).projects.include?(ac)
+    project = developers(:jamis).projects.detect { |p| p == ac }
+    assert_equal 1, project.access_level.to_i
+  end
+
+  def test_habtm_attribute_access_and_respond_to
+    project = developers(:jamis).projects[0]
+    assert project.has_attribute?("name")
+    assert project.has_attribute?("joined_on")
+    assert project.has_attribute?("access_level")
+    assert project.respond_to?("name")
+    assert project.respond_to?("name=")
+    assert project.respond_to?("name?")
+    assert project.respond_to?("joined_on")
+    # given that the 'join attribute' won't be persisted, I don't
+    # think we should define the mutators
+    #assert project.respond_to?("joined_on=")
+    assert project.respond_to?("joined_on?")
+    assert project.respond_to?("access_level")
+    #assert project.respond_to?("access_level=")
+    assert project.respond_to?("access_level?")
+  end
+
+  def test_habtm_adding_before_save
+    no_of_devels = Developer.count
+    no_of_projects = Project.count
+    aredridel = Developer.new("name" => "Aredridel")
+    aredridel.projects.concat([Project.find(1), p = Project.new("name" => "Projekt")])
+    assert aredridel.new_record?
+    assert p.new_record?
+    assert aredridel.save
+    assert !aredridel.new_record?
+    assert_equal no_of_devels+1, Developer.count
+    assert_equal no_of_projects+1, Project.count
+    assert_equal 2, aredridel.projects.size
+    assert_equal 2, aredridel.projects(true).size
+  end
+
+  def test_habtm_saving_multiple_relationships
+    new_project = Project.new("name" => "Grimetime")
+    amount_of_developers = 4
+    developers = (0...amount_of_developers).collect {|i| Developer.create(:name => "JME #{i}") }.reverse
+
+    new_project.developer_ids = [developers[0].id, developers[1].id]
+    new_project.developers_with_callback_ids = [developers[2].id, developers[3].id]
+    assert new_project.save
+
+    new_project.reload
+    assert_equal amount_of_developers, new_project.developers.size
+    assert_equal developers, new_project.developers
+  end
+
+  def test_habtm_unique_order_preserved
+    assert_equal developers(:poor_jamis, :jamis, :david), projects(:active_record).non_unique_developers
+    assert_equal developers(:poor_jamis, :jamis, :david), projects(:active_record).developers
+  end
+
+  def test_build
+    devel = Developer.find(1)
+    proj = assert_no_queries { devel.projects.build("name" => "Projekt") }
+    assert !devel.projects.loaded?
+    
+    assert_equal devel.projects.last, proj
+    assert devel.projects.loaded?
+    
+    assert proj.new_record?
+    devel.save
+    assert !proj.new_record?
+    assert_equal devel.projects.last, proj
+    assert_equal Developer.find(1).projects.sort_by(&:id).last, proj  # prove join table is updated
+  end
+
+  def test_build_by_new_record
+    devel = Developer.new(:name => "Marcel", :salary => 75000)
+    proj1 = devel.projects.build(:name => "Make bed")
+    proj2 = devel.projects.build(:name => "Lie in it")
+    assert_equal devel.projects.last, proj2
+    assert proj2.new_record?
+    devel.save
+    assert !devel.new_record?
+    assert !proj2.new_record?
+    assert_equal devel.projects.last, proj2
+    assert_equal Developer.find_by_name("Marcel").projects.last, proj2  # prove join table is updated
+  end
+
+  def test_create
+    devel = Developer.find(1)
+    proj = devel.projects.create("name" => "Projekt")
+    assert !devel.projects.loaded?
+    
+    assert_equal devel.projects.last, proj
+    assert devel.projects.loaded?
+    
+    assert !proj.new_record?
+    assert_equal Developer.find(1).projects.sort_by(&:id).last, proj  # prove join table is updated
+  end
+
+  def test_create_by_new_record
+    devel = Developer.new(:name => "Marcel", :salary => 75000)
+    proj1 = devel.projects.build(:name => "Make bed")
+    proj2 = devel.projects.build(:name => "Lie in it")
+    assert_equal devel.projects.last, proj2
+    assert proj2.new_record?
+    devel.save
+    assert !devel.new_record?
+    assert !proj2.new_record?
+    assert_equal devel.projects.last, proj2
+    assert_equal Developer.find_by_name("Marcel").projects.last, proj2  # prove join table is updated
+  end
+
+  def test_creation_respects_hash_condition
+    post = categories(:general).post_with_conditions.build(:body => '')
+    
+    assert        post.save
+    assert_equal  'Yet Another Testing Title', post.title
+    
+    another_post = categories(:general).post_with_conditions.create(:body => '')
+
+    assert        !another_post.new_record?
+    assert_equal  'Yet Another Testing Title', another_post.title
+  end
+
+  def test_uniq_after_the_fact
+    dev = developers(:jamis)
+    dev.projects << projects(:active_record)
+    dev.projects << projects(:active_record)
+    
+    assert_equal 3, dev.projects.size
+    assert_equal 1, dev.projects.uniq.size
+  end
+
+  def test_uniq_before_the_fact
+    projects(:active_record).developers << developers(:jamis)
+    projects(:active_record).developers << developers(:david)
+    assert_equal 3, projects(:active_record, :reload).developers.size
+  end
+
+  def test_deleting
+    david = Developer.find(1)
+    active_record = Project.find(1)
+    david.projects.reload
+    assert_equal 2, david.projects.size
+    assert_equal 3, active_record.developers.size
+
+    david.projects.delete(active_record)
+
+    assert_equal 1, david.projects.size
+    assert_equal 1, david.projects(true).size
+    assert_equal 2, active_record.developers(true).size
+  end
+
+  def test_deleting_array
+    david = Developer.find(1)
+    david.projects.reload
+    david.projects.delete(Project.find(:all))
+    assert_equal 0, david.projects.size
+    assert_equal 0, david.projects(true).size
+  end
+
+  def test_deleting_with_sql
+    david = Developer.find(1)
+    active_record = Project.find(1)
+    active_record.developers.reload
+    assert_equal 3, active_record.developers_by_sql.size
+
+    active_record.developers_by_sql.delete(david)
+    assert_equal 2, active_record.developers_by_sql(true).size
+  end
+
+  def test_deleting_array_with_sql
+    active_record = Project.find(1)
+    active_record.developers.reload
+    assert_equal 3, active_record.developers_by_sql.size
+
+    active_record.developers_by_sql.delete(Developer.find(:all))
+    assert_equal 0, active_record.developers_by_sql(true).size
+  end
+
+  def test_deleting_all
+    david = Developer.find(1)
+    david.projects.reload
+    david.projects.clear
+    assert_equal 0, david.projects.size
+    assert_equal 0, david.projects(true).size
+  end
+
+  def test_removing_associations_on_destroy
+    david = DeveloperWithBeforeDestroyRaise.find(1)
+    assert !david.projects.empty?
+    assert_nothing_raised { david.destroy }
+    assert david.projects.empty?
+    assert DeveloperWithBeforeDestroyRaise.connection.select_all("SELECT * FROM developers_projects WHERE developer_id = 1").empty?
+  end
+
+  def test_additional_columns_from_join_table
+    assert_date_from_db Date.new(2004, 10, 10), Developer.find(1).projects.first.joined_on.to_date
+  end
+
+  def test_destroy_all
+    david = Developer.find(1)
+    david.projects.reload
+    assert !david.projects.empty?
+    david.projects.destroy_all
+    assert david.projects.empty?
+    assert david.projects(true).empty?
+  end
+
+  def test_deprecated_push_with_attributes_was_removed
+    jamis = developers(:jamis)
+    assert_raise(NoMethodError) do
+      jamis.projects.push_with_attributes(projects(:action_controller), :joined_on => Date.today)
+    end
+  end
+
+  def test_associations_with_conditions
+    assert_equal 3, projects(:active_record).developers.size
+    assert_equal 1, projects(:active_record).developers_named_david.size
+    assert_equal 1, projects(:active_record).developers_named_david_with_hash_conditions.size
+
+    assert_equal developers(:david), projects(:active_record).developers_named_david.find(developers(:david).id)
+    assert_equal developers(:david), projects(:active_record).developers_named_david_with_hash_conditions.find(developers(:david).id)
+    assert_equal developers(:david), projects(:active_record).salaried_developers.find(developers(:david).id)
+
+    projects(:active_record).developers_named_david.clear
+    assert_equal 2, projects(:active_record, :reload).developers.size
+  end
+
+  def test_find_in_association
+    # Using sql
+    assert_equal developers(:david), projects(:active_record).developers.find(developers(:david).id), "SQL find"
+
+    # Using ruby
+    active_record = projects(:active_record)
+    active_record.developers.reload
+    assert_equal developers(:david), active_record.developers.find(developers(:david).id), "Ruby find"
+  end
+
+  def test_include_uses_array_include_after_loaded
+    project = projects(:active_record)
+    developer = project.developers.first
+    
+    assert_no_queries do
+      assert project.developers.loaded?
+      assert project.developers.include?(developer)
+    end
+  end
+  
+  def test_include_checks_if_record_exists_if_target_not_loaded
+    project = projects(:active_record)
+    developer = project.developers.first
+
+    project.reload
+    assert ! project.developers.loaded?
+    assert_queries(1) do
+      assert project.developers.include?(developer)
+    end
+    assert ! project.developers.loaded?
+  end
+
+  def test_include_returns_false_for_non_matching_record_to_verify_scoping
+    project = projects(:active_record)
+    developer = Developer.create :name => "Bryan", :salary => 50_000
+
+    assert ! project.developers.loaded?
+    assert ! project.developers.include?(developer)
+  end
+
+  def test_find_in_association_with_custom_finder_sql
+    assert_equal developers(:david), projects(:active_record).developers_with_finder_sql.find(developers(:david).id), "SQL find"
+
+    active_record = projects(:active_record)
+    active_record.developers_with_finder_sql.reload
+    assert_equal developers(:david), active_record.developers_with_finder_sql.find(developers(:david).id), "Ruby find"
+  end
+
+  def test_find_in_association_with_custom_finder_sql_and_string_id
+    assert_equal developers(:david), projects(:active_record).developers_with_finder_sql.find(developers(:david).id.to_s), "SQL find"
+  end
+
+  def test_find_with_merged_options
+    assert_equal 1, projects(:active_record).limited_developers.size
+    assert_equal 1, projects(:active_record).limited_developers.find(:all).size
+    assert_equal 3, projects(:active_record).limited_developers.find(:all, :limit => nil).size
+  end
+
+  def test_dynamic_find_should_respect_association_order
+    # Developers are ordered 'name DESC, id DESC'
+    low_id_jamis = developers(:jamis)
+    middle_id_jamis = developers(:poor_jamis)
+    high_id_jamis = projects(:active_record).developers.create(:name => 'Jamis')
+
+    assert_equal high_id_jamis, projects(:active_record).developers.find(:first, :conditions => "name = 'Jamis'")
+    assert_equal high_id_jamis, projects(:active_record).developers.find_by_name('Jamis')
+  end
+
+  def test_dynamic_find_order_should_override_association_order
+    # Developers are ordered 'name DESC, id DESC'
+    low_id_jamis = developers(:jamis)
+    middle_id_jamis = developers(:poor_jamis)
+    high_id_jamis = projects(:active_record).developers.create(:name => 'Jamis')
+
+    assert_equal low_id_jamis, projects(:active_record).developers.find(:first, :conditions => "name = 'Jamis'", :order => 'id')
+    assert_equal low_id_jamis, projects(:active_record).developers.find_by_name('Jamis', :order => 'id')
+  end
+
+  def test_dynamic_find_all_should_respect_association_order
+    # Developers are ordered 'name DESC, id DESC'
+    low_id_jamis = developers(:jamis)
+    middle_id_jamis = developers(:poor_jamis)
+    high_id_jamis = projects(:active_record).developers.create(:name => 'Jamis')
+
+    assert_equal [high_id_jamis, middle_id_jamis, low_id_jamis], projects(:active_record).developers.find(:all, :conditions => "name = 'Jamis'")
+    assert_equal [high_id_jamis, middle_id_jamis, low_id_jamis], projects(:active_record).developers.find_all_by_name('Jamis')
+  end
+
+  def test_dynamic_find_all_order_should_override_association_order
+    # Developers are ordered 'name DESC, id DESC'
+    low_id_jamis = developers(:jamis)
+    middle_id_jamis = developers(:poor_jamis)
+    high_id_jamis = projects(:active_record).developers.create(:name => 'Jamis')
+
+    assert_equal [low_id_jamis, middle_id_jamis, high_id_jamis], projects(:active_record).developers.find(:all, :conditions => "name = 'Jamis'", :order => 'id')
+    assert_equal [low_id_jamis, middle_id_jamis, high_id_jamis], projects(:active_record).developers.find_all_by_name('Jamis', :order => 'id')
+  end
+
+  def test_dynamic_find_all_should_respect_association_limit
+    assert_equal 1, projects(:active_record).limited_developers.find(:all, :conditions => "name = 'Jamis'").length
+    assert_equal 1, projects(:active_record).limited_developers.find_all_by_name('Jamis').length
+  end
+
+  def test_dynamic_find_all_order_should_override_association_limit
+    assert_equal 2, projects(:active_record).limited_developers.find(:all, :conditions => "name = 'Jamis'", :limit => 9_000).length
+    assert_equal 2, projects(:active_record).limited_developers.find_all_by_name('Jamis', :limit => 9_000).length
+  end
+
+  def test_dynamic_find_all_should_respect_readonly_access
+    projects(:active_record).readonly_developers.each { |d| assert_raise(ActiveRecord::ReadOnlyRecord) { d.save!  } if d.valid?}
+    projects(:active_record).readonly_developers.each { |d| d.readonly? }
+  end
+
+  def test_new_with_values_in_collection
+    jamis = DeveloperForProjectWithAfterCreateHook.find_by_name('Jamis')
+    david = DeveloperForProjectWithAfterCreateHook.find_by_name('David')
+    project = ProjectWithAfterCreateHook.new(:name => "Cooking with Bertie")
+    project.developers << jamis
+    project.save!
+    project.reload
+
+    assert project.developers.include?(jamis)
+    assert project.developers.include?(david)
+  end
+
+  def test_find_in_association_with_options
+    developers = projects(:active_record).developers.find(:all)
+    assert_equal 3, developers.size
+
+    assert_equal developers(:poor_jamis), projects(:active_record).developers.find(:first, :conditions => "salary < 10000")
+    assert_equal developers(:jamis),      projects(:active_record).developers.find(:first, :order => "salary DESC")
+  end
+
+  def test_replace_with_less
+    david = developers(:david)
+    david.projects = [projects(:action_controller)]
+    assert david.save
+    assert_equal 1, david.projects.length
+  end
+
+  def test_replace_with_new
+    david = developers(:david)
+    david.projects = [projects(:action_controller), Project.new("name" => "ActionWebSearch")]
+    david.save
+    assert_equal 2, david.projects.length
+    assert !david.projects.include?(projects(:active_record))
+  end
+
+  def test_replace_on_new_object
+    new_developer = Developer.new("name" => "Matz")
+    new_developer.projects = [projects(:action_controller), Project.new("name" => "ActionWebSearch")]
+    new_developer.save
+    assert_equal 2, new_developer.projects.length
+  end
+
+  def test_consider_type
+    developer = Developer.find(:first)
+    special_project = SpecialProject.create("name" => "Special Project")
+
+    other_project = developer.projects.first
+    developer.special_projects << special_project
+    developer.reload
+
+    assert developer.projects.include?(special_project)
+    assert developer.special_projects.include?(special_project)
+    assert !developer.special_projects.include?(other_project)
+  end
+
+  def test_update_attributes_after_push_without_duplicate_join_table_rows
+    developer = Developer.new("name" => "Kano")
+    project = SpecialProject.create("name" => "Special Project")
+    assert developer.save
+    developer.projects << project
+    developer.update_attribute("name", "Bruza")
+    assert_equal 1, Developer.connection.select_value(<<-end_sql).to_i
+      SELECT count(*) FROM developers_projects
+      WHERE project_id = #{project.id}
+      AND developer_id = #{developer.id}
+    end_sql
+  end
+
+  def test_updating_attributes_on_non_rich_associations
+    welcome = categories(:technology).posts.first
+    welcome.title = "Something else"
+    assert welcome.save!
+  end
+
+  def test_habtm_respects_select
+    categories(:technology).select_testing_posts(true).each do |o|
+      assert_respond_to o, :correctness_marker
+    end
+    assert_respond_to categories(:technology).select_testing_posts.find(:first), :correctness_marker
+  end
+
+  def test_updating_attributes_on_rich_associations
+    david = projects(:action_controller).developers.first
+    david.name = "DHH"
+    assert_raises(ActiveRecord::ReadOnlyRecord) { david.save! }
+  end
+
+  def test_updating_attributes_on_rich_associations_with_limited_find_from_reflection
+    david = projects(:action_controller).selected_developers.first
+    david.name = "DHH"
+    assert_nothing_raised { david.save! }
+  end
+
+
+  def test_updating_attributes_on_rich_associations_with_limited_find
+    david = projects(:action_controller).developers.find(:all, :select => "developers.*").first
+    david.name = "DHH"
+    assert david.save!
+  end
+
+  def test_join_table_alias
+    assert_equal 3, Developer.find(:all, :include => {:projects => :developers}, :conditions => 'developers_projects_join.joined_on IS NOT NULL').size
+  end
+
+  def test_join_with_group
+    group = Developer.columns.inject([]) do |g, c|
+      g << "developers.#{c.name}"
+      g << "developers_projects_2.#{c.name}"
+    end
+    Project.columns.each { |c| group << "projects.#{c.name}" }
+
+    assert_equal 3, Developer.find(:all, :include => {:projects => :developers}, :conditions => 'developers_projects_join.joined_on IS NOT NULL', :group => group.join(",")).size
+  end
+
+  def test_get_ids
+    assert_equal projects(:active_record, :action_controller).map(&:id).sort, developers(:david).project_ids.sort
+    assert_equal [projects(:active_record).id], developers(:jamis).project_ids
+  end
+
+  def test_assign_ids
+    developer = Developer.new("name" => "Joe")
+    developer.project_ids = projects(:active_record, :action_controller).map(&:id)
+    developer.save
+    developer.reload
+    assert_equal 2, developer.projects.length
+    assert_equal projects(:active_record), developer.projects[0]
+    assert_equal projects(:action_controller), developer.projects[1]
+  end
+
+  def test_assign_ids_ignoring_blanks
+    developer = Developer.new("name" => "Joe")
+    developer.project_ids = [projects(:active_record).id, nil, projects(:action_controller).id, '']
+    developer.save
+    developer.reload
+    assert_equal 2, developer.projects.length
+    assert_equal projects(:active_record), developer.projects[0]
+    assert_equal projects(:action_controller), developer.projects[1]
+  end
+
+  def test_select_limited_ids_list
+    # Set timestamps
+    Developer.transaction do
+      Developer.find(:all, :order => 'id').each_with_index do |record, i|
+        record.update_attributes(:created_at => 5.years.ago + (i * 5.minutes))
+      end
+    end
+
+    join_base = ActiveRecord::Associations::ClassMethods::JoinDependency::JoinBase.new(Project)
+    join_dep  = ActiveRecord::Associations::ClassMethods::JoinDependency.new(join_base, :developers, nil)
+    projects  = Project.send(:select_limited_ids_list, {:order => 'developers.created_at'}, join_dep)
+    assert !projects.include?("'"), projects
+    assert_equal %w(1 2), projects.scan(/\d/).sort
+  end
+
+  def test_scoped_find_on_through_association_doesnt_return_read_only_records
+    tag = Post.find(1).tags.find_by_name("General")
+
+    assert_nothing_raised do
+      tag.save!
+    end
+  end
+
+  def test_has_many_through_polymorphic_has_manys_works
+    assert_equal [10, 20].to_set, pirates(:redbeard).treasure_estimates.map(&:price).to_set
+  end
+end