require "isolation/abstract_unit"
class LoadingTest < ActiveSupport::TestCase
include ActiveSupport::Testing::Isolation
def setup
build_app
end
def teardown
teardown_app
end
def app
@app ||= Rails.application
end
test "constants in app are autoloaded" do
app_file "app/models/post.rb", <<-MODEL
class Post < ActiveRecord::Base
validates_acceptance_of :title, accept: "omg"
end
MODEL
require "#{rails_root}/config/environment"
setup_ar!
p = Post.create(title: "omg")
assert_equal 1, Post.count
assert_equal "omg", p.title
p = Post.first
assert_equal "omg", p.title
end
test "concerns in app are autoloaded" do
app_file "app/controllers/concerns/trackable.rb", <<-CONCERN
module Trackable
end
CONCERN
app_file "app/mailers/concerns/email_loggable.rb", <<-CONCERN
module EmailLoggable
end
CONCERN
app_file "app/models/concerns/orderable.rb", <<-CONCERN
module Orderable
end
CONCERN
app_file "app/validators/concerns/matchable.rb", <<-CONCERN
module Matchable
end
CONCERN
require "#{rails_root}/config/environment"
assert_nothing_raised { Trackable }
assert_nothing_raised { EmailLoggable }
assert_nothing_raised { Orderable }
assert_nothing_raised { Matchable }
end
test "models without table do not panic on scope definitions when loaded" do
app_file "app/models/user.rb", <<-MODEL
class User < ActiveRecord::Base
default_scope { where(published: true) }
end
MODEL
require "#{rails_root}/config/environment"
setup_ar!
User
end
test "load config/environments/environment before Bootstrap initializers" do
app_file "config/environments/development.rb", <<-RUBY
Rails.application.configure do
config.development_environment_loaded = true
end
RUBY
add_to_config <<-RUBY
config.before_initialize do
config.loaded = config.development_environment_loaded
end
RUBY
require "#{app_path}/config/environment"
assert ::Rails.application.config.loaded
end
test "descendants loaded after framework initialization are cleaned on each request without cache classes" do
add_to_config <<-RUBY
config.cache_classes = false
config.reload_classes_only_on_change = false
RUBY
app_file "app/models/post.rb", <<-MODEL
class Post < ActiveRecord::Base
end
MODEL
app_file "config/routes.rb", <<-RUBY
Rails.application.routes.draw do
get '/load', to: lambda { |env| [200, {}, Post.all] }
get '/unload', to: lambda { |env| [200, {}, []] }
end
RUBY
require "rack/test"
extend Rack::Test::Methods
require "#{rails_root}/config/environment"
setup_ar!
assert_equal [ActiveRecord::SchemaMigration, ActiveRecord::InternalMetadata], ActiveRecord::Base.descendants
get "/load"
assert_equal [ActiveRecord::SchemaMigration, ActiveRecord::InternalMetadata, Post], ActiveRecord::Base.descendants
get "/unload"
assert_equal [ActiveRecord::SchemaMigration, ActiveRecord::InternalMetadata], ActiveRecord::Base.descendants
end
test "initialize cant be called twice" do
require "#{app_path}/config/environment"
assert_raise(RuntimeError) { Rails.application.initialize! }
end
test "reload constants on development" do
add_to_config <<-RUBY
config.cache_classes = false
RUBY
app_file "config/routes.rb", <<-RUBY
Rails.application.routes.draw do
get '/c', to: lambda { |env| [200, {"Content-Type" => "text/plain"}, [User.counter.to_s]] }
end
RUBY
app_file "app/models/user.rb", <<-MODEL
class User
def self.counter; 1; end
end
MODEL
require "rack/test"
extend Rack::Test::Methods
require "#{rails_root}/config/environment"
get "/c"
assert_equal "1", last_response.body
app_file "app/models/user.rb", <<-MODEL
class User
def self.counter; 2; end
end
MODEL
get "/c"
assert_equal "2", last_response.body
end
test "does not reload constants on development if custom file watcher always returns false" do
add_to_config <<-RUBY
config.cache_classes = false
config.file_watcher = Class.new do
def initialize(*); end
def updated?; false; end
def execute; end
def execute_if_updated; false; end
end
RUBY
app_file "config/routes.rb", <<-RUBY
Rails.application.routes.draw do
get '/c', to: lambda { |env| [200, {"Content-Type" => "text/plain"}, [User.counter.to_s]] }
end
RUBY
app_file "app/models/user.rb", <<-MODEL
class User
def self.counter; 1; end
end
MODEL
require "rack/test"
extend Rack::Test::Methods
require "#{rails_root}/config/environment"
get "/c"
assert_equal "1", last_response.body
app_file "app/models/user.rb", <<-MODEL
class User
def self.counter; 2; end
end
MODEL
get "/c"
assert_equal "1", last_response.body
end
test "added files (like db/schema.rb) also trigger reloading" do
add_to_config <<-RUBY
config.cache_classes = false
RUBY
app_file "config/routes.rb", <<-RUBY
$counter ||= 0
Rails.application.routes.draw do
get '/c', to: lambda { |env| User.name; [200, {"Content-Type" => "text/plain"}, [$counter.to_s]] }
end
RUBY
app_file "app/models/user.rb", <<-MODEL
class User
$counter += 1
end
MODEL
require "rack/test"
extend Rack::Test::Methods
require "#{rails_root}/config/environment"
get "/c"
assert_equal "1", last_response.body
app_file "db/schema.rb", ""
get "/c"
assert_equal "2", last_response.body
end
test "dependencies reloading is followed by routes reloading" do
add_to_config <<-RUBY
config.cache_classes = false
RUBY
app_file "config/routes.rb", <<-RUBY
$counter ||= 1
$counter *= 2
Rails.application.routes.draw do
get '/c', to: lambda { |env| User.name; [200, {"Content-Type" => "text/plain"}, [$counter.to_s]] }
end
RUBY
app_file "app/models/user.rb", <<-MODEL
class User
$counter += 1
end
MODEL
require "rack/test"
extend Rack::Test::Methods
require "#{rails_root}/config/environment"
get "/c"
assert_equal "3", last_response.body
app_file "db/schema.rb", ""
get "/c"
assert_equal "7", last_response.body
end
test "columns migrations also trigger reloading" do
add_to_config <<-RUBY
config.cache_classes = false
RUBY
app_file "config/routes.rb", <<-RUBY
Rails.application.routes.draw do
get '/title', to: lambda { |env| [200, {"Content-Type" => "text/plain"}, [Post.new.title]] }
get '/body', to: lambda { |env| [200, {"Content-Type" => "text/plain"}, [Post.new.body]] }
end
RUBY
app_file "app/models/post.rb", <<-MODEL
class Post < ActiveRecord::Base
end
MODEL
require "rack/test"
extend Rack::Test::Methods
app_file "db/migrate/1_create_posts.rb", <<-MIGRATION
class CreatePosts < ActiveRecord::Migration::Current
def change
create_table :posts do |t|
t.string :title, default: "TITLE"
end
end
end
MIGRATION
Dir.chdir(app_path) { `rake db:migrate` }
require "#{rails_root}/config/environment"
get "/title"
assert_equal "TITLE", last_response.body
app_file "db/migrate/2_add_body_to_posts.rb", <<-MIGRATION
class AddBodyToPosts < ActiveRecord::Migration::Current
def change
add_column :posts, :body, :text, default: "BODY"
end
end
MIGRATION
Dir.chdir(app_path) { `rake db:migrate` }
get "/body"
assert_equal "BODY", last_response.body
end
test "AC load hooks can be used with metal" do
app_file "app/controllers/omg_controller.rb", <<-RUBY
begin
class OmgController < ActionController::Metal
ActiveSupport.run_load_hooks(:action_controller, self)
def show
self.response_body = ["OK"]
end
end
rescue => e
puts "Error loading metal: \#{e.class} \#{e.message}"
end
RUBY
app_file "config/routes.rb", <<-RUBY
Rails.application.routes.draw do
get "/:controller(/:action)"
end
RUBY
require "#{rails_root}/config/environment"
require "rack/test"
extend Rack::Test::Methods
get "/omg/show"
assert_equal "OK", last_response.body
end
def test_initialize_can_be_called_at_any_time
require "#{app_path}/config/application"
assert !Rails.initialized?
assert !Rails.application.initialized?
Rails.initialize!
assert Rails.initialized?
assert Rails.application.initialized?
end
private
def setup_ar!
ActiveRecord::Base.establish_connection(adapter: "sqlite3", database: ":memory:")
ActiveRecord::Migration.verbose = false
ActiveRecord::Schema.define(version: 1) do
create_table :posts do |t|
t.string :title
end
end
end
end
