Resource generate bulk spreadsheet (#47)

staff_features/resources/resource_generate_bulk_spreadsheet.feature

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+Feature: Resource generate bulk spreadsheet
+  Background:
+    Given an administrator user is logged in
+      And a Resource has been created
+      And the Resource is opened in edit mode
+  Scenario: Resource Bulk archival object updater page is displayed
+     When the user clicks on 'More'
+      And the user clicks on 'Generate Bulk Archival Object Spreadsheet'
+     Then the Generate Bulk Archival Object Spreadsheet page is displayed
+  Scenario: Resource Bulk Archival Object Spreadsheet is downloaded
+    Given the user is on the Generate Bulk Archival Object Spreadsheet page
+     When the user selects the Archival Object
+      And the user clicks on 'Download Spreadsheet'
+     Then the Bulk Update Resource spreadsheet is downloaded

staff_features/resources/step_definitions/resource_generate_bulk_spreadsheet.rb

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+# frozen_string_literal: true
+
+Given 'the user is on the Generate Bulk Archival Object Spreadsheet page' do
+  click_on 'More'
+  click_on 'Generate Bulk Archival Object Spreadsheet'
+end
+
+Then 'the Generate Bulk Archival Object Spreadsheet page is displayed' do
+  expect(current_url).to include 'bulk_archival_object_updater/download?resource='
+  expect(current_url).to include @resource_id
+end
+
+Then 'the user selects the Archival Object' do
+  input_fields = all('#bulk_archival_object_updater_table input')
+
+  expect(input_fields.length).to eq 2
+  input_fields[1].click
+end
+
+Then 'the Bulk Update Resource spreadsheet is downloaded' do
+  files = Dir.glob(File.join(Dir.tmpdir, '*.xlsx'))
+
+  downloaded_file = nil
+  files.each do |file|
+    downloaded_file = file if file.include?("bulk_update.resource_#{@resource_id}")
+  end
+
+  expect(downloaded_file).to_not eq nil
+end