Included Hybrid generators testing + example

Author: jackal1-66

MC/config/common/ini/GeneratorPerformance.ini

@@ -0,0 +1,4 @@
+# Performance generator test using hybrid configuration with Pythia8 
+# underlying event generator
+[GeneratorHybrid]
+configFile = ${O2DPG_MC_CONFIG_ROOT}/MC/config/common/external/generator/perfConf.json

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

@@ -0,0 +1,55 @@
+int Hybrid()
+{
+  std::string path{"o2sim_Kine.root"};
+  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;
+  }
+  // Get the MCTrack branch
+  std::vector<o2::MCTrack> *tracks{};
+  tree->SetBranchAddress("MCTrack", &tracks);
+  // Check if processes with ID 42 are available
+  const int processID = 42; // Performance test particle custom process ID
+  int nEvents = tree->GetEntries();
+  short int count_perf = 0;
+  bool flag = false;
+  for (int i = 0; i < nEvents; i++)
+  {
+    tree->GetEntry(i);
+    int nTracks = tracks->size();
+    count_perf = 0;
+    for (auto &track : *tracks)
+    {
+      const auto &process = track.getProcess();
+      if (process == processID)
+      {
+        flag = true;
+        // No need to continue checking other tracks in the event
+        break;
+      }
+    }
+    if (flag == true)
+    {
+      count_perf++;
+      flag = false;
+    }
+  }
+  if (count_perf == 0)
+  {
+    std::cerr << "No performance test particles found in the events\n";
+    return 1;
+  } else if (count_perf > nEvents) {
+    std::cerr << "More performance test flagged events than generated events\n";
+    return 1;
+  }
+  file.Close();
+  return 0;
+}

test/README.md

@@ -24,7 +24,7 @@ Whenever an `ini` file is detedcted to be tested, a test macro is required to be
 ```bash
 <name-of-ini-file>.C
 ```
-Note, that `run_tests.sh` will automatically detect all generators used in an `ini`. For at least one generator defined in the `ini` file there must be a test. Each test is defined as a function in the `<name-of-ini-file>.C` macro. Assuming you want to test `External` and `Pythia8` generator, the macro should look like
+Note, that `run_tests.sh` will automatically detect all generators used in an `ini`. For at least one generator defined in the `ini` file there must be a test. Each test is defined as a function in the `<name-of-ini-file>.C` macro. Assuming you want to test `External`, `Pythia8` and `Hybrid` generators, the macro should look like
 ```cpp
 int Pythia8()
 {
@@ -37,6 +37,12 @@ int External()
     // do your test
     return ret;
 }
+
+int Hybrid()
+{
+    // do your test
+    return ret;
+}
 ```
 The return type must be an integer, `0` in case of success and `!=0` in case of failure.
 

test/run_generator_tests.sh

@@ -21,7 +21,7 @@ export ROOT_INCLUDE_PATH LD_LIBRARY_PATH
 # Entrypoint for O2DPG related tests #
 ######################################
 
-CHECK_GENERATORS="Pythia8 External"
+CHECK_GENERATORS="Pythia8 External Hybrid"
 
 # The test parent dir to be cretaed in current directory
 TEST_PARENT_DIR="o2dpg_tests/generators"