Improve photo export download integration test

closes #6663

features/desktop/download_photos.feature

@@ -1,11 +1,20 @@
-@wip
 @javascript
 Feature: Download Photos
 
-  Scenario: Download my photos
+  Scenario: Request my photos
-  	Given I am signed in
+    Given I am signed in
-    And I click on my name in the header
+    When I click on my name in the header
-    And I follow "settings"
+    When I follow "Settings"
     Then I should be on my account settings page
-    And I follow "download my photos"
+    When I follow "Request my photos"
-    Then I confirm the alert
+    Then I should see a flash message indicating success
+    And I should see a flash message containing "We are currently processing your photos"
+
+  Scenario: Download my photos
+    Given I am signed in
+    When I did request my photos
+    And I click on my name in the header
+    When I follow "Settings"
+    Then I should be on my account settings page
+    When I follow "Download my photos"
+    Then I should get a zipped file

features/step_definitions/user_steps.rb

@@ -219,3 +219,11 @@ end
 When /^I click the sign in button$/ do
   click_link "Sign in"
 end
+
+Given /^I did request my photos$/ do
+  @me.perform_export_photos!
+end
+
+Then /^I should get a zipped file$/ do
+  expect(DownloadHelpers.download).to end_with("zip")
+end

features/support/download_helpers.rb

@@ -0,0 +1,40 @@
+# Credits goes to Steve Richert
+# http://collectiveidea.com/blog/archives/2012/01/27/testing-file-downloads-with-capybara-and-chromedriver/
+module DownloadHelpers
+  TIMEOUT ||= 5
+  PATH ||= Rails.root.join("tmp/downloads")
+
+  module_function
+
+  def downloads
+    Dir[PATH.join("*")]
+  end
+
+  def download
+    wait_for_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

features/support/env.rb

@@ -21,7 +21,17 @@ Rails.application.routes.default_url_options[:port] = AppConfig.pod_uri.port
 Selenium::WebDriver::Firefox::Binary.path = ENV["FIREFOX_BINARY_PATH"] || Selenium::WebDriver::Firefox::Binary.path
 
 Capybara.register_driver :selenium do |app|
-  Capybara::Selenium::Driver.new(app, browser: :firefox)
+  profile = Selenium::WebDriver::Firefox::Profile.new
+  # Set the download directory to "tmp/downloads"
+  profile["browser.download.dir"] = DownloadHelpers::PATH.to_s
+  # Save the file instead of opening it
+  profile["browser.download.folderList"] = 2
+  # Hide the download Manager
+  profile["browser.download.manager.showWhenStarting"] = false
+  # Suppress "open with" dialog for zipped files only
+  profile["browser.helperApps.neverAsk.saveToDisk"] = "application/zip"
+  # Start Firefox using our profile
+  Capybara::Selenium::Driver.new(app, browser: :firefox, profile: profile)
 end
 
 Capybara.register_driver :mobile do |app|
@@ -70,4 +80,6 @@ include HelperMethods
 
 Before do
   Devise.mailer.deliveries = []
+  # Delete all files in "tmp/downloads"
+  DownloadHelpers.clear_downloads
 end