From a992f6122ad0de3bfa9ec777e5ebbfd98dad913d Mon Sep 17 00:00:00 2001
From: Marco Giacalone <mgiacalo@gmail.com>
Date: Wed, 17 Dec 2025 20:36:20 +0100
Subject: [PATCH] Fix Pythia8 CI testing

The Pythia8() function exists already in the Pythia namespace loaded with ROOT, so when executing the macro a function redefinition error was thrown. By replacing the name to pythia8() the problem is solved.
---
 MC/config/ALICE3/ini/tests/pythia8_ArAr.C                 | 2 +-
 MC/config/ALICE3/ini/tests/pythia8_KrKr.C                 | 2 +-
 MC/config/ALICE3/ini/tests/pythia8_OO.C                   | 2 +-
 MC/config/ALICE3/ini/tests/pythia8_PbPb.C                 | 2 +-
 MC/config/ALICE3/ini/tests/pythia8_PbPb_536tev.C          | 2 +-
 MC/config/ALICE3/ini/tests/pythia8_XeXe.C                 | 2 +-
 MC/config/ALICE3/ini/tests/pythia8_pp.C                   | 2 +-
 MC/config/ALICE3/ini/tests/pythia8_pp_136tev.C            | 2 +-
 MC/config/ALICE3/ini/tests/pythia8_pp_hardQCD_136tev.C    | 2 +-
 MC/config/ALICE3/ini/tests/pythia8_pp_hf_hardQCD_136tev.C | 2 +-
 MC/config/ALICE3/ini/tests/pythia8_pp_ropes.C             | 2 +-
 MC/config/ALICE3/ini/tests/pythia8_pp_ropes_136tev.C      | 2 +-
 MC/config/ALICE3/ini/tests/pythia8_pp_shoving.C           | 2 +-
 MC/config/ALICE3/ini/tests/pythia8_pp_shoving_136tev.C    | 2 +-
 MC/config/PWGEM/ini/tests/pythia8_OO_536_VM2ll.C          | 8 ++++----
 test/README.md                                            | 2 +-
 test/run_generator_tests.sh                               | 2 +-
 17 files changed, 20 insertions(+), 20 deletions(-)

diff --git a/MC/config/ALICE3/ini/tests/pythia8_ArAr.C b/MC/config/ALICE3/ini/tests/pythia8_ArAr.C
index 49c15680f..0676e4c22 100644
--- a/MC/config/ALICE3/ini/tests/pythia8_ArAr.C
+++ b/MC/config/ALICE3/ini/tests/pythia8_ArAr.C
@@ -2,7 +2,7 @@ int External() {
     return 0;
 }
 
-int Pythia8()  
+int pythia8()
 {  
   return External();  
 } 
\ No newline at end of file
diff --git a/MC/config/ALICE3/ini/tests/pythia8_KrKr.C b/MC/config/ALICE3/ini/tests/pythia8_KrKr.C
index 49c15680f..0676e4c22 100644
--- a/MC/config/ALICE3/ini/tests/pythia8_KrKr.C
+++ b/MC/config/ALICE3/ini/tests/pythia8_KrKr.C
@@ -2,7 +2,7 @@ int External() {
     return 0;
 }
 
-int Pythia8()  
+int pythia8()
 {  
   return External();  
 } 
\ No newline at end of file
diff --git a/MC/config/ALICE3/ini/tests/pythia8_OO.C b/MC/config/ALICE3/ini/tests/pythia8_OO.C
index 49c15680f..0676e4c22 100644
--- a/MC/config/ALICE3/ini/tests/pythia8_OO.C
+++ b/MC/config/ALICE3/ini/tests/pythia8_OO.C
@@ -2,7 +2,7 @@ int External() {
     return 0;
 }
 
-int Pythia8()  
+int pythia8()
 {  
   return External();  
 } 
\ No newline at end of file
diff --git a/MC/config/ALICE3/ini/tests/pythia8_PbPb.C b/MC/config/ALICE3/ini/tests/pythia8_PbPb.C
index 49c15680f..0676e4c22 100644
--- a/MC/config/ALICE3/ini/tests/pythia8_PbPb.C
+++ b/MC/config/ALICE3/ini/tests/pythia8_PbPb.C
@@ -2,7 +2,7 @@ int External() {
     return 0;
 }
 
-int Pythia8()  
+int pythia8()
 {  
   return External();  
 } 
\ No newline at end of file
diff --git a/MC/config/ALICE3/ini/tests/pythia8_PbPb_536tev.C b/MC/config/ALICE3/ini/tests/pythia8_PbPb_536tev.C
index 49c15680f..0676e4c22 100644
--- a/MC/config/ALICE3/ini/tests/pythia8_PbPb_536tev.C
+++ b/MC/config/ALICE3/ini/tests/pythia8_PbPb_536tev.C
@@ -2,7 +2,7 @@ int External() {
     return 0;
 }
 
-int Pythia8()  
+int pythia8()
 {  
   return External();  
 } 
\ No newline at end of file
diff --git a/MC/config/ALICE3/ini/tests/pythia8_XeXe.C b/MC/config/ALICE3/ini/tests/pythia8_XeXe.C
index 49c15680f..0676e4c22 100644
--- a/MC/config/ALICE3/ini/tests/pythia8_XeXe.C
+++ b/MC/config/ALICE3/ini/tests/pythia8_XeXe.C
@@ -2,7 +2,7 @@ int External() {
     return 0;
 }
 
-int Pythia8()  
+int pythia8()
 {  
   return External();  
 } 
\ No newline at end of file
diff --git a/MC/config/ALICE3/ini/tests/pythia8_pp.C b/MC/config/ALICE3/ini/tests/pythia8_pp.C
index 49c15680f..0676e4c22 100644
--- a/MC/config/ALICE3/ini/tests/pythia8_pp.C
+++ b/MC/config/ALICE3/ini/tests/pythia8_pp.C
@@ -2,7 +2,7 @@ int External() {
     return 0;
 }
 
-int Pythia8()  
+int pythia8()
 {  
   return External();  
 } 
\ No newline at end of file
diff --git a/MC/config/ALICE3/ini/tests/pythia8_pp_136tev.C b/MC/config/ALICE3/ini/tests/pythia8_pp_136tev.C
index 49c15680f..0676e4c22 100644
--- a/MC/config/ALICE3/ini/tests/pythia8_pp_136tev.C
+++ b/MC/config/ALICE3/ini/tests/pythia8_pp_136tev.C
@@ -2,7 +2,7 @@ int External() {
     return 0;
 }
 
-int Pythia8()  
+int pythia8()
 {  
   return External();  
 } 
\ No newline at end of file
diff --git a/MC/config/ALICE3/ini/tests/pythia8_pp_hardQCD_136tev.C b/MC/config/ALICE3/ini/tests/pythia8_pp_hardQCD_136tev.C
index 49c15680f..0676e4c22 100644
--- a/MC/config/ALICE3/ini/tests/pythia8_pp_hardQCD_136tev.C
+++ b/MC/config/ALICE3/ini/tests/pythia8_pp_hardQCD_136tev.C
@@ -2,7 +2,7 @@ int External() {
     return 0;
 }
 
-int Pythia8()  
+int pythia8()
 {  
   return External();  
 } 
\ No newline at end of file
diff --git a/MC/config/ALICE3/ini/tests/pythia8_pp_hf_hardQCD_136tev.C b/MC/config/ALICE3/ini/tests/pythia8_pp_hf_hardQCD_136tev.C
index 49c15680f..0676e4c22 100644
--- a/MC/config/ALICE3/ini/tests/pythia8_pp_hf_hardQCD_136tev.C
+++ b/MC/config/ALICE3/ini/tests/pythia8_pp_hf_hardQCD_136tev.C
@@ -2,7 +2,7 @@ int External() {
     return 0;
 }
 
-int Pythia8()  
+int pythia8()
 {  
   return External();  
 } 
\ No newline at end of file
diff --git a/MC/config/ALICE3/ini/tests/pythia8_pp_ropes.C b/MC/config/ALICE3/ini/tests/pythia8_pp_ropes.C
index 49c15680f..0676e4c22 100644
--- a/MC/config/ALICE3/ini/tests/pythia8_pp_ropes.C
+++ b/MC/config/ALICE3/ini/tests/pythia8_pp_ropes.C
@@ -2,7 +2,7 @@ int External() {
     return 0;
 }
 
-int Pythia8()  
+int pythia8()
 {  
   return External();  
 } 
\ No newline at end of file
diff --git a/MC/config/ALICE3/ini/tests/pythia8_pp_ropes_136tev.C b/MC/config/ALICE3/ini/tests/pythia8_pp_ropes_136tev.C
index 49c15680f..0676e4c22 100644
--- a/MC/config/ALICE3/ini/tests/pythia8_pp_ropes_136tev.C
+++ b/MC/config/ALICE3/ini/tests/pythia8_pp_ropes_136tev.C
@@ -2,7 +2,7 @@ int External() {
     return 0;
 }
 
-int Pythia8()  
+int pythia8()
 {  
   return External();  
 } 
\ No newline at end of file
diff --git a/MC/config/ALICE3/ini/tests/pythia8_pp_shoving.C b/MC/config/ALICE3/ini/tests/pythia8_pp_shoving.C
index 49c15680f..0676e4c22 100644
--- a/MC/config/ALICE3/ini/tests/pythia8_pp_shoving.C
+++ b/MC/config/ALICE3/ini/tests/pythia8_pp_shoving.C
@@ -2,7 +2,7 @@ int External() {
     return 0;
 }
 
-int Pythia8()  
+int pythia8()
 {  
   return External();  
 } 
\ No newline at end of file
diff --git a/MC/config/ALICE3/ini/tests/pythia8_pp_shoving_136tev.C b/MC/config/ALICE3/ini/tests/pythia8_pp_shoving_136tev.C
index 49c15680f..0676e4c22 100644
--- a/MC/config/ALICE3/ini/tests/pythia8_pp_shoving_136tev.C
+++ b/MC/config/ALICE3/ini/tests/pythia8_pp_shoving_136tev.C
@@ -2,7 +2,7 @@ int External() {
     return 0;
 }
 
-int Pythia8()  
+int pythia8()
 {  
   return External();  
 } 
\ No newline at end of file
diff --git a/MC/config/PWGEM/ini/tests/pythia8_OO_536_VM2ll.C b/MC/config/PWGEM/ini/tests/pythia8_OO_536_VM2ll.C
index 9250232c0..ac9df9f68 100644
--- a/MC/config/PWGEM/ini/tests/pythia8_OO_536_VM2ll.C
+++ b/MC/config/PWGEM/ini/tests/pythia8_OO_536_VM2ll.C
@@ -50,7 +50,7 @@ int External() {
   return 0;
 }
 
-//int Pythia8()  
-//{  
-//    return External();
-//}
+int pythia8()
+{
+    return External();
+}
diff --git a/test/README.md b/test/README.md
index 3c2a90d47..6745eae5b 100644
--- a/test/README.md
+++ b/test/README.md
@@ -26,7 +26,7 @@ Whenever an `ini` file is detedcted to be tested, a test macro is required to be
 ```
 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
 ```cpp
-int Pythia8()
+int pythia8()
 {
     // do your test
     return ret;
diff --git a/test/run_generator_tests.sh b/test/run_generator_tests.sh
index 6c5f3b8b8..8141a5f64 100755
--- a/test/run_generator_tests.sh
+++ b/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"
 
 # The test parent dir to be cretaed in current directory
 TEST_PARENT_DIR="o2dpg_tests/generators"