Add a test for the GenericConsumer

FWCore/Modules/test/BuildFile.xml

@@ -4,6 +4,8 @@
 
 <test name="TestFWCoreModulesEmptySourceRunsAndLumis" command="cmsRun ${LOCALTOP}/src/FWCore/Modules/test/emptysource_RunsAndLumis_cfg.py"/>
 
+<test name="testGenericConsumer" command="cmsRun ${LOCALTOP}/src/FWCore/Modules/test/testGenericConsumer.py"/>
+
 <bin file="test_catch2_*.cc" name="TestFWCoreModulesTP">
   <use name="FWCore/TestProcessor"/>
   <use name="catch2"/>

FWCore/Modules/test/testGenericConsumer.py

@@ -0,0 +1,37 @@
+# Configuration file for EventContentAnalyzer
+
+import FWCore.ParameterSet.Config as cms
+
+process = cms.Process("TEST")
+
+process.load("FWCore.Framework.test.cmsExceptionsFatal_cff")
+process.options.wantSummary = True
+
+process.load("FWCore.Modules.printContent_cfi")
+
+process.maxEvents = cms.untracked.PSet(
+    input = cms.untracked.int32(5)
+)
+
+process.source = cms.Source("EmptySource")
+
+process.thing = cms.EDProducer("ThingProducer")
+
+process.anotherThing = cms.EDProducer("ThingProducer")
+
+process.otherThing = cms.EDProducer("OtherThingProducer",
+    thingTag = cms.InputTag('anotherThing'),
+    transient = cms.untracked.bool(True)
+)
+
+process.task = cms.Task(
+    process.thing,
+    process.anotherThing,
+    process.otherThing
+)
+
+process.consumer = cms.EDAnalyzer("GenericConsumer",
+    eventProducts = cms.untracked.vstring("*_thing_*_*", "otherThing")
+)
+
+process.path = cms.Path(process.consumer, process.task)