Add testing API endpoint to enqueue vaccinations search in NHS

Allow end-to-end tests to trigger `EnqueueVaccinationsSearchInNHSJob`
directly rather than through the Sidekiq Scheduler's `/sidekiq/recurring-jobs/{name}`
URL.

Mirrors the existing `reporting_refresh` controller: `?wait=true` runs
`perform_now` and returns 200, otherwise enqueues with `perform_later`
and returns 202. Inherits the `:testing_api` Flipper / local-env gate
from `API::Testing::BaseController`.

Author: benilovj

app/controllers/api/testing/vaccinations_search_in_nhs_controller.rb

@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+class API::Testing::VaccinationsSearchInNHSController < API::Testing::BaseController
+  def create
+    if params[:wait].present?
+      EnqueueVaccinationsSearchInNHSJob.perform_now
+      render status: :ok
+    else
+      EnqueueVaccinationsSearchInNHSJob.perform_later
+      render status: :accepted
+    end
+  end
+end

config/routes.rb

@@ -116,6 +116,8 @@
         resources :teams, only: :destroy, param: :workgroup
         post "/onboard", to: "onboard#create"
         get "refresh-reporting", to: "reporting_refresh#create"
+        post "vaccinations-search-in-nhs",
+             to: "vaccinations_search_in_nhs#create"
       end
     end
 

spec/requests/api/testing/vaccinations_search_in_nhs_spec.rb

@@ -0,0 +1,29 @@
+# frozen_string_literal: true
+
+describe "/api/testing/vaccinations-search-in-nhs" do
+  before { Flipper.enable(:testing_api) }
+  after { Flipper.disable(:testing_api) }
+
+  describe "POST" do
+    context "without wait param" do
+      it "enqueues the job and responds with accepted" do
+        expect {
+          post "/api/testing/vaccinations-search-in-nhs"
+        }.to have_enqueued_job(EnqueueVaccinationsSearchInNHSJob)
+        expect(response).to have_http_status(:accepted)
+      end
+    end
+
+    context "with wait=true" do
+      before do
+        allow(EnqueueVaccinationsSearchInNHSJob).to receive(:perform_now)
+      end
+
+      it "runs the job synchronously and responds with ok" do
+        post "/api/testing/vaccinations-search-in-nhs", params: { wait: "true" }
+        expect(EnqueueVaccinationsSearchInNHSJob).to have_received(:perform_now)
+        expect(response).to have_http_status(:ok)
+      end
+    end
+  end
+end