Fix admin user creation

app/admin/admin_user.rb

@@ -12,14 +12,14 @@
     f.inputs 'User' do
       f.input :email
       f.input :password
-      f.input :password_confirmation
+      f.input :password_confirmation, required: true
     end
     f.actions
   end
 
   controller do
     def permitted_params
-      params.permit admin_user: [:email, :password, :password_confirmation]
+      params.permit(user: [:email, :password, :password_confirmation])
     end
   end
 end

spec/features/admin_users_spec.rb

@@ -0,0 +1,14 @@
+require 'spec_helper'
+
+feature 'creating a user' do
+  scenario 'user creates a new admin user' do
+    log_in_admin_user
+    visit new_admin_user_path
+    fill_in 'Email', with: '[email protected]'
+    find('#user_password_confirmation').set('password')
+    find('#user_password').set('password')
+    find('input[type="submit"]').click
+
+    expect(current_path).to eq(admin_user_path(AdminUser.find_by(email: '[email protected]')))
+  end
+end