Support synchronous refresh in the testing refresh-reporting endpoint

When wait=true is provided, run ReportingAPI::RefreshJob inline and
respond with 200, so test callers can block until the materialised
view is refreshed instead of polling. Default async behaviour is
preserved.

Author: benilovj

app/controllers/api/testing/reporting_refresh_controller.rb

@@ -2,7 +2,12 @@
 
 class API::Testing::ReportingRefreshController < API::Testing::BaseController
   def create
-    ReportingAPI::RefreshJob.perform_later
-    render status: :accepted
+    if params[:wait].present?
+      ReportingAPI::RefreshJob.perform_now
+      render status: :ok
+    else
+      ReportingAPI::RefreshJob.perform_later
+      render status: :accepted
+    end
   end
 end

spec/controllers/api/testing/reporting_refresh_controller_spec.rb

@@ -7,5 +7,14 @@
       get :create
       expect(response).to have_http_status(:accepted)
     end
+
+    context "when wait=true" do
+      it "runs the refresh synchronously and responds with ok status" do
+        expect(ReportingAPI::RefreshJob).to receive(:perform_now)
+        expect(ReportingAPI::RefreshJob).not_to receive(:perform_later)
+        get :create, params: { wait: "true" }
+        expect(response).to have_http_status(:ok)
+      end
+    end
   end
 end