Exercise CalArray<PadFlags> loading in a TPC unit test

This makes it easy to valgrind the process.
It seems that despite the custom streamer, there are still sporadic segfaults
when exercising DeadChannelMapCreator::loadIDCPadFlags (at least on ARM64).

Author: sawenzel

Detectors/TPC/base/test/testTPCCalDet.cxx

@@ -24,6 +24,7 @@
 #include "TPCBase/CalDet.h"
 #include "TFile.h"
 #include "Framework/TypeTraits.h"
+#include "TPCBase/DeadChannelMapCreator.h"
 
 namespace o2::tpc
 {
@@ -344,4 +345,12 @@ BOOST_AUTO_TEST_CASE(CalDetTypeTest)
   BOOST_CHECK(testDict == true);
 }
 
+BOOST_AUTO_TEST_CASE(CalDetStreamerTest)
+{
+  // simple code executing the TPC IDCPadFlags loading in a standalone env --> easy to valgrind
+  o2::tpc::DeadChannelMapCreator creator{};
+  creator.init("https://alice-ccdb.cern.ch");
+  creator.loadIDCPadFlags(1731274461770);
+}
+
 } // namespace o2::tpc