Add test

Author: njacazio

MC/config/common/ini/tests/GeneratorAMPTpp536TeV.C

@@ -0,0 +1,35 @@
+int External()
+{
+  std::string path{"o2sim_Kine.root"};
+  // Check that file exists, can be opened and has the correct tree
+  TFile file(path.c_str(), "READ");
+  if (file.IsZombie()) {
+    std::cerr << "Cannot open ROOT file " << path << "\n";
+    return 1;
+  }
+  auto tree = (TTree*)file.Get("o2sim");
+  if (!tree) {
+    std::cerr << "Cannot find tree o2sim in file " << path << "\n";
+    return 1;
+  }
+  std::vector<o2::MCTrack>* tracks{};
+  tree->SetBranchAddress("MCTrack", &tracks);
+  o2::dataformats::MCEventHeader* eventHeader = nullptr;
+  tree->SetBranchAddress("MCEventHeader.", &eventHeader);
+
+  // Check if there are 100 events, as simulated in the o2dpg-test
+  auto nEvents = tree->GetEntries();
+  if (nEvents != 100) {
+    std::cerr << "Expected 100 events, got " << nEvents << "\n";
+    return 1;
+  }
+  // Beam momentum per nucleon for Pb-Pb at sqrt(s_NN) = 5.36 TeV
+  for (Long64_t i = 0; i < nEvents; ++i) {
+    tree->GetEntry(i);
+    if (tracks->empty()) {
+      std::cerr << "Empty entry found at event " << i << "\n";
+      return 1;
+    }
+  }
+  return 0;
+}