service object to write out config files

test/fixtures/accounts.yml

@@ -5,3 +5,15 @@ account1:
   password: <%= CryptSerializer.dump('1q2w3e4r5t6y7u') %>
   home_folder: client_one
   contact_email: ftp-user@mailinator.com
+
+account2:
+  username: client-two
+  password: <%= CryptSerializer.dump('azsxdcfvgbhnjmk,l.;/') %>
+  home_folder: client_two
+  contact_email: ftp-user@mailinator.com
+
+account3:
+  username: client-three
+  password: <%= CryptSerializer.dump('p0o9i8u7y6t5r4e3w2q1') %>
+  home_folder: client_three
+  contact_email: ftp-user@mailinator.com

test/services/ftp_config_test.rb

@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+require 'test_helper'
+
+class FtpConfigTest < ActiveSupport::TestCase
+  test 'should write new password file' do
+    config = FtpConfig.new
+    config.build_password_list Account.all
+
+    assert_match "#{accounts(:account2).username}:", File.read(AppConfig.htpasswd)
+  end
+
+  test 'should build user config files' do
+    config = FtpConfig.new
+    config.build_user_configs Account.all
+
+    account = accounts(:account1)
+    fconfig = File.read("#{AppConfig.ftpusers}#{account.username}")
+
+    assert_match account.home_folder, fconfig
+  end
+end