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カピバラとRSpecでCSVファイルのダウンロードをテストする方法は？

以下はコントローラーにあります：

respond_to do |format|
  format.csv  { send_data as_csv, type:'text/csv' }
end

仕様：

click_link 'Download CSV'
page.driver.browser.switch_to.alert.accept

expect( page ).to have_content csv_data

しかし、これはうまくいきません：

Failure/Error: page.driver.browser.switch_to.alert.accept
Selenium::WebDriver::Error::NoAlertPresentError: No alert is present

[ファイルの保存]ダイアログボックスが表示されますが、「アラート」ダイアログではないようです。

「OK」をクリックしてカピバラにデータを表示させる方法は？

ruby-on-railsrubyseleniumrspeccapybara
16
B Seven

CollectiveIdea および別のソースから転載。

OSXで動作します。 Firefox 34.0.5

スペック：

  describe 'Download CSV' do
    let( :submission_email ){ '[email protected]' }
    let( :email_csv ){ "id,email,created_at\n1,#{ submission_email }," }

    specify do
      visit '/emails'
      expect( page ).to have_content 'Email Submissions'

      click_on 'Download CSV'

      expect( DownloadHelpers::download_content ).to include email_csv
    end
  end

仕様ヘルパー：

require 'shared/download_helper'

Capybara.register_driver :Selenium do |app|
  profile = Selenium::WebDriver::Firefox::Profile.new
  profile['browser.download.dir'] = DownloadHelpers::PATH.to_s
  profile['browser.download.folderList'] = 2

  # Suppress "open with" dialog
  profile['browser.helperApps.neverAsk.saveToDisk'] = 'text/csv'
  Capybara::Selenium::Driver.new(app, :browser => :firefox, :profile => profile)
end

config.before( :each ) do
    DownloadHelpers::clear_downloads
end

shared/download_helper.rb：

module DownloadHelpers
  TIMEOUT = 1
  PATH    = Rails.root.join("tmp/downloads")

  extend self

  def downloads
    Dir[PATH.join("*")]
  end

  def download
    downloads.first
  end

  def download_content
    wait_for_download
    File.read(download)
  end

  def wait_for_download
    Timeout.timeout(TIMEOUT) do
      sleep 0.1 until downloaded?
    end
  end

  def downloaded?
    !downloading? && downloads.any?
  end

  def downloading?
    downloads.grep(/\.part$/).any?
  end

  def clear_downloads
    FileUtils.rm_f(downloads)
  end
end
21
B Seven

私は同様のものを実装しようとし、何時間も費やしました。最後に私はいくつかの解決策を持っています、おそらくあなたにも適しています。

Gemfile：

#source 'https://rubygems.org'

gem 'Rails',                   '4.2.2'
gem 'bcrypt',                  '3.1.7'
gem 'bootstrap-sass',          '3.2.0.0'
gem 'faker',                   '1.4.2'
gem 'carrierwave',             '0.10.0'
gem 'mini_magick',             '3.8.0'
gem 'fog',                     '1.36.0'
gem 'will_paginate',           '3.0.7'
gem 'bootstrap-will_paginate', '0.0.10'
gem 'sass-Rails',              '5.0.2'
gem 'uglifier',                '2.5.3'
gem 'coffee-Rails',            '4.1.0'
gem 'jquery-Rails',            '4.0.3'
gem 'turbolinks',              '2.3.0'
gem 'jbuilder',                '2.2.3'
gem 'sdoc',                    '0.4.0', group: :doc
gem 'rename'
gem 'sprockets',                             '3.6.3'
gem 'responders',           '~> 2.0' 
gem 'inherited_resources'

group :development, :test do
  gem 'sqlite3',     '1.3.9'
  gem 'byebug',      '3.4.0'
  gem 'web-console', '2.0.0.beta3'
  gem 'spring',      '1.1.3'
end

group :test do
  gem 'minitest-reporters', '1.0.5'
  gem 'mini_backtrace',     '0.1.3'
  gem 'guard-minitest',     '2.3.1'
    gem 'capybara',           '2.8.1'
    gem 'rspec',              '3.5.0'
    gem 'rspec-Rails',     '~> 3.4'
    gem 'cucumber-Rails', :require => false
    gem 'shoulda-matchers', '~> 3.0', require: false
    gem 'database_cleaner'
    gem 'factory_girl_Rails', '~> 4.5.0'
end

spec/Rails_helper.rb

ENV['Rails_ENV'] ||= 'test'
require File.expand_path('../../config/environment', __FILE__)
abort("The Rails environment is running in production mode!") if Rails.env.production?
require 'spec_helper'
require 'rspec/Rails'

require 'shoulda/matchers'

Shoulda::Matchers.configure do |config|
  config.integrate do |with|
    with.test_framework :rspec
    with.library :Rails
  end
end

config.use_transactional_fixtures = false

ActiveRecord::Migration.maintain_test_schema!

RSpec.configure do |config|
  config.fixture_path = "#{::Rails.root}/spec/fixtures"

  config.use_transactional_fixtures = true

  config.infer_spec_type_from_file_location!

  config.filter_Rails_from_backtrace!
end

spec/spec_helper.rb

ENV["Rails_ENV"] ||= 'test'
require File.expand_path("../../config/environment", __FILE__)
require 'rspec/Rails'

require 'capybara/rspec'
require 'capybara/Rails'

require 'download_helper'

Capybara.register_driver :Selenium do |app|
  profile = Selenium::WebDriver::Firefox::Profile.new
  profile['browser.download.dir'] = DownloadHelpers::PATH.to_s
  profile['browser.download.folderList'] = 2

  profile['browser.helperApps.neverAsk.saveToDisk'] = 'text/csv'
  Capybara::Selenium::Driver.new(app, :browser => :firefox, :profile => profile)
end


RSpec.configure do |config|
  config.expect_with :rspec do |expectations|
    expectations.include_chain_clauses_in_custom_matcher_descriptions = true
  end

  config.mock_with :rspec do |mocks|
    mocks.verify_partial_doubles = true
  end

  config.shared_context_metadata_behavior = :apply_to_Host_groups

    config.include Capybara::DSL


=begin
  config.filter_run_when_matching :focus

  config.example_status_persistence_file_path = "spec/examples.txt"

  config.disable_monkey_patching!

  if config.files_to_run.one?
    config.default_formatter = 'doc'
  end

  config.profile_examples = 10

  config.order = :random

  Kernel.srand config.seed
=end
end

test/test_helper.rb

ENV['Rails_ENV'] ||= 'test'
require File.expand_path('../../config/environment', __FILE__)
require 'Rails/test_help'
require 'capybara/Rails'

class ActiveSupport::TestCase
  # Setup all fixtures in test/fixtures/*.yml for all tests in alphabetical order.
  fixtures :all
    include ApplicationHelper

    def is_logged_in?
        !session[:user_id].nil?
    end

    # Logs in a test user.
    def log_in_as(user, options = {})
        password = options[:password] || 'password'
        remember_me = options[:remember_me] || '1'
        if integration_test?
            post login_path, session: { email:user.email, password: password, remember_me: remember_me }
        else
            session[:user_id] = user.id
        end
    end

    private

        # Returns true inside an integration test.
        def integration_test?
            defined?(post_via_redirect)
        end

end

class ActionDispatch::IntegrationTest
  # Make the Capybara DSL available in all integration tests
  include Capybara::DSL

  # Reset sessions and driver between tests
  # Use super wherever this method is redefined in your individual test classes
  def teardown
    Capybara.reset_sessions!
    Capybara.use_default_driver
  end
end

spec/download_helper.rb

module DownloadHelpers
  TIMEOUT = 1
  PATH    = Rails.root.join("tmp/downloads")

  extend self

  def downloads
    Dir[PATH.join("*")]
  end

  def download
    downloads.first
  end

  def download_content
    wait_for_download
    File.read(download)
  end

  def wait_for_download
    Timeout.timeout(TIMEOUT) do
      sleep 0.1 until downloaded?
    end
  end

  def downloaded?
    !downloading? && downloads.any?
  end

  def downloading?
    downloads.grep(/\.part$/).any?
  end

  def clear_downloads
    FileUtils.rm_f(downloads)
  end
end

spec/mpodels/spec.rb

  describe 'Download file' do

    specify do
      visit '/createfile'

      click_on 'create file'

            page.response_headers['Content-Type'].should == "text/csv"
            header = page.response_headers['Content-Disposition']
            header.should match /^attachment/
            header.should match /filename=\"temp.csv\"$/
       end
    end
4
ChaosPredictor

rack_testドライバー（javascript /ブラウザーなし）を使用している場合、これを行う別の方法を見つけました：

DOWNLOAD_CACHE_PATH = Rails.root.join("tmp/downloaded_file").to_s

setup do
  File.delete(DOWNLOAD_CACHE_PATH)
end

test "download file" do
  visit download_file_path

  # simulate file download
  File.write(DOWNLOAD_CACHE_PATH, page.body)

  csv = CSV.open(DOWNLOAD_CACHE_PATH)
  # assert something on the csv data
end
3
siegy22

ブラウザーによっては、そのブラウザーのプロファイルが必要になります。そのプロファイルへの保存を要求するプロパティを無効にすることをお勧めします。

2
bcar