Permette di mettere in pausa un invio e riprenderlo senza perdere la coda.

Co-authored-by: Cursor <cursoragent@cursor.com>

test/controllers/mailings_controller_test.rb

@@ -303,6 +303,32 @@ class MailingsControllerTest < ActionDispatch::IntegrationTest
     assert mailing.reload.sending?
   end
 
+  test "pause keeps remaining recipients and resume continues from there" do
+    login_as users(:admin)
+    follow_redirect! if response.redirect?
+    create_campaign_org(name: "Seconda societa", email: "seconda@example.com")
+    mailing = create_mailing(identity: @identity, audience: "to_send")
+    mailing.rebuild_recipients!
+    recipients = mailing.mailing_recipients.order(:id).to_a
+    assert recipients.size >= 2
+    recipients.first.update!(status: "sent", sent_at: Time.current)
+    recipients.second.update!(status: "queued")
+    mailing.update!(status: "sending", queued_at: Time.current, test_sent_at: Time.current, test_sent_to: "test@example.com")
+
+    post pause_mailing_path(mailing, project_code: @project.code)
+
+    assert_redirected_to dashboard_mailings_path(project_code: @project.code)
+    assert_equal "paused", mailing.reload.status
+    assert_equal "sent", recipients.first.reload.status
+    assert_equal "queued", recipients.second.reload.status
+
+    post resume_mailing_path(mailing, project_code: @project.code)
+
+    assert_redirected_to dashboard_mailings_path(project_code: @project.code)
+    assert_equal "sending", mailing.reload.status
+    assert_equal "queued", recipients.second.reload.status
+  end
+
   test "cancel stops pending recipients and keeps sent ones" do
     login_as users(:admin)
     follow_redirect! if response.redirect?