diff --git a/test_git_update.sh b/test_git_update.sh
index 7a1a961..d3b867e 100755
--- a/test_git_update.sh
+++ b/test_git_update.sh
@@ -6,9 +6,11 @@ echo "<execution of test_git_update.sh>"
 REPO_NAME=performance_testing
 REMOTE=ssh://git@git.jean-cloud.net:22529/eleonore/performance_testing.git
 WITH_SUBMODULE="true"
-FILENAMES=("sample0" "sample1") #we do not check for all files
+FILENAMES=("sample0" "sample1 sample3") #we do not check for all files
 FILENAMES_TAG=("sample0")
-FILENAMES_BRANCH=("sample0" "sample1") #we do not check for all files, especially not those specific to the branch.
+FILENAMES_BRANCH=("sample0 sample1 sample2") #we do not check for all files, especially not those specific to the branch.
+FILE_ON_BRANCH_ONLY=sample2
+FILE_ON_MAIN_ONLY=sample3
 TAG_NAME=start
 BRANCH_NAME=secondary
 TEMP_CLONE_DIR="temp_local_clone"
@@ -149,6 +151,23 @@ modification_check(){
     fi
 }
 
+changing_branch_check(){
+    if [ -f $FILE_ON_BRANCH_ONLY ]; then
+        echo "The files of the branch $BRANCH_NAME are present."
+        branch_changing_result=0
+    else
+        echo "The files of the branch $BRANCH_NAME are absent."
+        branch_changing_result=1
+    fi
+    if [ -f $FILE_ON_MAIN_ONLY ]; then
+        echo "The files of the branch main are present."
+        branch_changing_result=1
+    else
+        echo "The files of the branch main are absent."
+        branch_changing_result=0
+    fi
+}
+
 test0 (){
     #CASE 0: git cloned in an empty directory
     section TEST0
@@ -281,6 +300,27 @@ test4(){
     fi
 }
 
+test5(){
+#CASE 5: git updated, changing to another branch, deleting and adding files in the process
+    section TEST5
+    #if it exists, delete the directory
+    if [ -d $REPO_NAME ]; then
+        run rm -rf $REPO_NAME
+    fi
+    #clone the repo in its last state
+    run git clone --recurse-submodules --shallow-submodules --depth 1 --config core.sshCommand="ssh" $REMOTE &> /dev/null
+    #call git update with another branch
+    cd $REPO_NAME
+    ../git_update.sh -r $BRANCH_NAME $REMOTE
+    #checks
+    changing_branch_check
+    case5=$branch_changing_result
+    if [ "$case5" = "0" ]; then
+        echo "case 5, branch-changing update: OK"
+    else
+        echo "case 5, branch-changing update: FAIL"
+    fi
+}
 #not ff
 #ref changed