Move user db creation to service

spec/services/create_account_spec.rb

@@ -7,6 +7,22 @@ RSpec.describe CreateAccount, type: :model do
     allow(service).to receive(:ldap_client).and_return(ldap_client_mock)
   end
 
+  describe "#create_user_in_database" do
+    let(:service) { CreateAccount.new(
+      username: 'isaacnewton',
+      email: 'isaacnewton@example.com',
+      password: 'bright-ideas-in-autumn'
+    )}
+
+    it "creates a new user record in the akkounts database" do
+      expect(User.count).to eq(0)
+      service.send(:create_user_in_database)
+      expect(User.count).to eq(1)
+      expect(User.last.cn).to eq("isaacnewton")
+      expect(User.last.email).to eq("isaacnewton@example.com")
+    end
+  end
+
   describe "#add_ldap_document" do
     let(:service) { CreateAccount.new(
       username: 'halfinney',