Add spaces around method arguments when setting default values

Closes #5288

test/integration/confirmable_test.rb

@@ -282,7 +282,7 @@ class ConfirmationTest < Devise::IntegrationTest
 end
 
 class ConfirmationOnChangeTest < Devise::IntegrationTest
-  def create_second_admin(options={})
+  def create_second_admin(options = {})
     @admin = nil
     create_admin(options)
   end

test/integration/http_authenticatable_test.rb

@@ -99,7 +99,7 @@ class HttpAuthenticationTest < Devise::IntegrationTest
   end
 
   private
-    def sign_in_as_new_user_with_http(username="user@test.com", password="12345678")
+    def sign_in_as_new_user_with_http(username = "user@test.com", password = "12345678")
       user = create_user
       get users_path(format: :xml), headers: { "HTTP_AUTHORIZATION" => "Basic #{Base64.encode64("#{username}:#{password}")}" }
       user

test/integration/recoverable_test.rb

@@ -21,7 +21,7 @@ class PasswordTest < Devise::IntegrationTest
     click_button 'Send me reset password instructions'
   end
 
-  def reset_password(options={}, &block)
+  def reset_password(options = {}, &block)
     unless options[:visit] == false
       visit edit_user_password_path(reset_password_token: options[:reset_password_token] || "abcdef")
       assert_response :success

test/integration/rememberable_test.rb

@@ -3,7 +3,7 @@
 require 'test_helper'
 
 class RememberMeTest < Devise::IntegrationTest
-  def create_user_and_remember(add_to_token='')
+  def create_user_and_remember(add_to_token = '')
     user = create_user
     user.remember_me!
     raw_cookie = User.serialize_into_cookie(user).tap { |a| a[1] << add_to_token }