[actions] in .github/workflows/testsuite, do not compare to current r…

…epo those processes that are not in the git repo

.github/workflows/testsuite_oneprocess.sh

@@ -35,16 +35,20 @@ function codegen() {
     ./CODEGEN/generateAndCompare.sh -q ${proc%.sa}
   fi
   # Check if there are any differences to the current repo
-  git checkout HEAD ${proc}/CODEGEN*.txt
-  if [ "${proc%.mad}" != "${proc}" ]; then
-    git checkout HEAD ${proc}/Cards/me5_configuration.txt
-    ###sed -i 's/DEFAULT_F2PY_COMPILER=f2py.*/DEFAULT_F2PY_COMPILER=f2py3/' ${proc}/Source/make_opts
-    git checkout HEAD ${proc}/Source/make_opts
+  compare=true # enable comparison to current git repo
+  ###compare=false # disable comparison to current git repo
+  if [ ${compare} ] && [ "$(git ls-tree --name-only HEAD ${proc})" != "" ]; then
+    git checkout HEAD ${proc}/CODEGEN*.txt
+    if [ "${proc%.mad}" != "${proc}" ]; then
+      git checkout HEAD ${proc}/Cards/me5_configuration.txt
+      ###sed -i 's/DEFAULT_F2PY_COMPILER=f2py.*/DEFAULT_F2PY_COMPILER=f2py3/' ${proc}/Source/make_opts
+      git checkout HEAD ${proc}/Source/make_opts
+    fi
+    echo
+    echo "git diff (start)"
+    git diff --exit-code
+    echo "git diff (end)"
   fi
-  echo
-  echo "git diff (start)"
-  git diff --exit-code
-  echo "git diff (end)"
 }
 
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