test habtm preloading

test_hbtm_preload_405.rb

# Activate the gem you are reporting the issue against.
gem 'activerecord', '4.0.5'
require 'active_record'
require 'minitest/autorun'
require 'logger'

# Ensure backward compatibility with Minitest 4
Minitest::Test = MiniTest::Unit::TestCase unless defined?(Minitest::Test)

# This connection will do for database-independent bug reports.
ActiveRecord::Base.establish_connection(adapter: 'sqlite3', database: ':memory:')
ActiveRecord::Base.logger = Logger.new(STDOUT)

ActiveRecord::Schema.define do
  create_table :projects do |t|
  end

  create_table :developers do |t|
    t.string   :name
  end

  create_table :developers_projects, force: true, id: false do |t|
    t.integer :developer_id, null: false
    t.integer :project_id, null: false
  end
end

class Project < ActiveRecord::Base
  has_and_belongs_to_many :developers, -> { distinct.order 'developers.name desc, developers.id desc' }
  has_and_belongs_to_many :developers_named_david, -> { where("name = 'David'").distinct }, :class_name => "Developer"
  has_and_belongs_to_many :developers_named_david_with_hash_conditions, -> { where(:name => 'David').distinct }, :class_name => "Developer"
end

class Developer < ActiveRecord::Base
  has_and_belongs_to_many :projects
end

class BugTest < Minitest::Test
  def test_eager_loading
    project = Project.create!
    jamis = Developer.create!(:name => 'Jamis')
    david = Developer.create!(:name => 'David')
    project.developers << [ jamis, david, jamis, david ]
    assert_equal 2, Project.preload(:developers).find(project.id).developers.size
    assert_equal 1, Project.preload(:developers_named_david).find(project.id).developers_named_david.size
    assert_equal 1, Project.preload(:developers_named_david_with_hash_conditions).find(project.id).developers_named_david_with_hash_conditions.size
  end
end

test_hbtm_preload_411.rb

# Activate the gem you are reporting the issue against.
gem 'activerecord', '4.1.1'
require 'active_record'
require 'minitest/autorun'
require 'logger'

# Ensure backward compatibility with Minitest 4
Minitest::Test = MiniTest::Unit::TestCase unless defined?(Minitest::Test)

# This connection will do for database-independent bug reports.
ActiveRecord::Base.establish_connection(adapter: 'sqlite3', database: ':memory:')
ActiveRecord::Base.logger = Logger.new(STDOUT)

ActiveRecord::Schema.define do
  create_table :projects do |t|
  end

  create_table :developers do |t|
    t.string   :name
  end

  create_table :developers_projects, force: true, id: false do |t|
    t.integer :developer_id, null: false
    t.integer :project_id, null: false
  end
end

class Project < ActiveRecord::Base
  has_and_belongs_to_many :developers, -> { distinct.order 'developers.name desc, developers.id desc' }
  has_and_belongs_to_many :developers_named_david, -> { where("name = 'David'").distinct }, :class_name => "Developer"
  has_and_belongs_to_many :developers_named_david_with_hash_conditions, -> { where(:name => 'David').distinct }, :class_name => "Developer"
end

class Developer < ActiveRecord::Base
  has_and_belongs_to_many :projects
end

class BugTest < Minitest::Test
  def test_eager_loading
    project = Project.create!
    jamis = Developer.create!(:name => 'Jamis')
    david = Developer.create!(:name => 'David')
    project.developers << [ jamis, david, jamis, david ]
    assert_equal 2, Project.preload(:developers).find(project.id).developers.size
    assert_equal 1, Project.preload(:developers_named_david).find(project.id).developers_named_david.size
    assert_equal 1, Project.preload(:developers_named_david_with_hash_conditions).find(project.id).developers_named_david_with_hash_conditions.size
  end
end

test_hbtm_preload_master.rb

unless File.exist?('Gemfile')
  File.write('Gemfile', <<-GEMFILE)
    source 'https://rubygems.org'
    gem 'rails', github: 'rails/rails'
    gem 'arel', github: 'rails/arel'
    gem 'sqlite3'
  GEMFILE

  system 'bundle'
end

require 'bundler'
Bundler.setup(:default)

require 'active_record'
require 'minitest/autorun'
require 'logger'

# Ensure backward compatibility with Minitest 4
Minitest::Test = MiniTest::Unit::TestCase unless defined?(Minitest::Test)

# This connection will do for database-independent bug reports.
ActiveRecord::Base.establish_connection(adapter: 'sqlite3', database: ':memory:')
ActiveRecord::Base.logger = Logger.new(STDOUT)

ActiveRecord::Schema.define do
  create_table :projects do |t|
  end

  create_table :developers do |t|
    t.string   :name
  end

  create_table :developers_projects, force: true, id: false do |t|
    t.integer :developer_id, null: false
    t.integer :project_id, null: false
  end
end

class Project < ActiveRecord::Base
  has_and_belongs_to_many :developers, -> { distinct.order 'developers.name desc, developers.id desc' }
  has_and_belongs_to_many :developers_named_david, -> { where("name = 'David'").distinct }, :class_name => "Developer"
  has_and_belongs_to_many :developers_named_david_with_hash_conditions, -> { where(:name => 'David').distinct }, :class_name => "Developer"
end

class Developer < ActiveRecord::Base
  has_and_belongs_to_many :projects
end

class BugTest < Minitest::Test
  def test_eager_loading
    project = Project.create!
    jamis = Developer.create!(:name => 'Jamis')
    david = Developer.create!(:name => 'David')
    project.developers << [ jamis, david, jamis, david ]
    assert_equal 2, Project.preload(:developers).find(project.id).developers.size
    assert_equal 1, Project.preload(:developers_named_david).find(project.id).developers_named_david.size
    assert_equal 1, Project.preload(:developers_named_david_with_hash_conditions).find(project.id).developers_named_david_with_hash_conditions.size
  end
end