Update User factory

spec/factories/users.rb

@@ -1,5 +1,16 @@
 FactoryBot.define do
   factory :user do
-    
+    email { Faker::Internet.email }
+    password { "password" }
+    password_confirmation { "password" }
+    username { Faker::Internet.username(specifier: 5..8) }
+    granblue_id { Faker::Number.number(digits: 4) }
+    picture { "gran" }
+    language { ["en", "ja"].sample }
+    private { Faker::Boolean.boolean }
+    element { ["water", "fire", "wind", "earth", "light", "dark"].sample }
+    gender { Faker::Number.between(from: 0, to: 1) }
+    theme { ["system", "dark", "light"].sample }
+    role { Faker::Number.between(from: 1, to: 3) }
   end
 end