FIX: send activation email if user have unconfirmed email

app/controllers/users_controller.rb

@@ -585,7 +585,7 @@ class UsersController < ApplicationController
 
     session.delete(SessionController::ACTIVATE_USER_KEY)
 
-    if @user.active
+    if @user.active && @user.email_confirmed?
       render_json_error(I18n.t('activation.activated'), status: 409)
     else
       @email_token = @user.email_tokens.unconfirmed.active.first

spec/controllers/users_controller_spec.rb

@@ -1424,9 +1424,11 @@ describe UsersController do
     context 'for an existing user' do
       let(:user) { Fabricate(:user, active: false) }
 
-      context 'for an activated account' do
+      context 'for an activated account with email confirmed' do
         it 'fails' do
           active_user = Fabricate(:user, active: true)
+          email_token = active_user.email_tokens.create(email: active_user.email).token
+          EmailToken.confirm(email_token)
           session[SessionController::ACTIVATE_USER_KEY] = active_user.id
           xhr :post, :send_activation_email, username: active_user.username
 
@@ -1440,6 +1442,20 @@ describe UsersController do
         end
       end
 
+      context 'for an activated account with unconfirmed email' do
+        it 'should send an email' do
+          unconfirmed_email_user = Fabricate(:user, active: true)
+          unconfirmed_email_user.email_tokens.create(email: unconfirmed_email_user.email)
+          session[SessionController::ACTIVATE_USER_KEY] = unconfirmed_email_user.id
+          Jobs.expects(:enqueue).with(:critical_user_email, has_entries(type: :signup))
+          xhr :post, :send_activation_email, username: unconfirmed_email_user.username
+
+          expect(response.status).to eq(200)
+
+          expect(session[SessionController::ACTIVATE_USER_KEY]).to eq(nil)
+        end
+      end
+
       describe 'when user does not have a valid session' do
         it 'should not be valid' do
           user = Fabricate(:user)