Carica oggetto e corpo dell'email appena si sceglie un template A/B.

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

test/controllers/mailings_controller_test.rb

@@ -104,4 +104,53 @@ class MailingsControllerTest < ActionDispatch::IntegrationTest
     body = (mail.html_part || mail).body.to_s
     assert_match(/Versione B/, body)
   end
+
+  test "new mailing form embeds template content for the picker" do
+    login_as users(:admin)
+    follow_redirect! if response.redirect?
+    template = MailTemplate.create!(
+      project: @project,
+      name: "Variante B picker",
+      subject: "Oggetto dal template B",
+      body_html: "<p>Corpo dal template B</p>"
+    )
+
+    get new_mailing_path(project_code: @project.code)
+    assert_response :success
+    assert_match(/template-picker/, response.body)
+    assert_match(/Oggetto dal template B/, response.body)
+    assert_match(/Corpo dal template B/, response.body)
+    assert_includes response.body, template.id.to_s
+  end
+
+  test "create copies blank variant B fields from selected template" do
+    login_as users(:admin)
+    follow_redirect! if response.redirect?
+    template_b = MailTemplate.create!(
+      project: @project,
+      name: "Template B server",
+      subject: "B {{societa}}",
+      body_html: "<p>Versione B dal template</p>"
+    )
+
+    post mailings_path(project_code: @project.code), params: {
+      mailing: {
+        name: "AB da template",
+        mail_identity_id: @identity.id,
+        mail_template_b_id: template_b.id,
+        audience: "to_send",
+        ab_test: "1",
+        ab_assignment: "from_record",
+        subject: "Oggetto A",
+        body_html: "<p>Versione A</p>",
+        subject_b: "",
+        body_html_b: "",
+        interval_seconds: 0
+      }
+    }
+    mailing = Mailing.last
+    assert_redirected_to mailing_path(mailing, project_code: @project.code)
+    assert_equal "B {{societa}}", mailing.subject_b
+    assert_includes mailing.body_html_b, "Versione B dal template"
+  end
 end