From 9197def0f8c6a57f166db65bd55cf393dc9dc0ae Mon Sep 17 00:00:00 2001
From: Chris Jones <chrisdjones15@gmail.com>
Date: Tue, 14 Jul 2020 14:30:58 -0500
Subject: [PATCH] Check that Services are accessible from ESProducer

If the Service system is not available, tests using this module will throw an exception.
---
 FWCore/Integration/test/WhatsItESProducer.cc | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/FWCore/Integration/test/WhatsItESProducer.cc b/FWCore/Integration/test/WhatsItESProducer.cc
index 927e500e788ac..079212c6ecc98 100644
--- a/FWCore/Integration/test/WhatsItESProducer.cc
+++ b/FWCore/Integration/test/WhatsItESProducer.cc
@@ -24,6 +24,7 @@
 #include "FWCore/Framework/interface/ModuleFactory.h"
 #include "FWCore/Framework/interface/ESProducer.h"
 #include "FWCore/Framework/interface/ESHandle.h"
+#include "FWCore/Framework/interface/TriggerNamesService.h"
 
 #include "FWCore/Integration/test/WhatsIt.h"
 #include "FWCore/Integration/test/Doodad.h"
@@ -34,6 +35,8 @@
 #include "FWCore/Utilities/interface/EDMException.h"
 #include "FWCore/Utilities/interface/ESGetToken.h"
 
+#include "FWCore/ServiceRegistry/interface/Service.h"
+
 //
 // class decleration
 //
@@ -113,6 +116,10 @@ namespace edmtest {
 
   // ------------ method called to produce the data  ------------
   WhatsItESProducer::ReturnType WhatsItESProducer::produce(const GadgetRcd& iRecord) {
+    //This tests that the Service system is accessible from a ESProducer
+    edm::Service<edm::service::TriggerNamesService> tns;
+    tns->getProcessName();
+
     edm::ESHandle<Doodad> doodad = iRecord.getHandle(token_);
     auto pWhatsIt = std::make_unique<WhatsIt>();
     pWhatsIt->a = doodad->a;