diff --git a/pzztest.py b/pzztest.py
index b4e9f07..ecf6cda 100644
--- a/pzztest.py
+++ b/pzztest.py
@@ -1,12 +1,27 @@
 import argparse
-from pathlib import Path
-import pzztool
 import hashlib
 import os
+from pathlib import Path
+import pzztool
+import shutil
 
 
 TPL_MAGIC_FILE = b"\x00\x20\xAF\x30" # http://virtualre.rf.gd/index.php/TPL_(Format_de_fichier)
 
+
+
+# compare le sha256 de chaque PZZ des dossiers passés en argument
+#     -> affiche le nom de fichier en cas de différence
+def verify_sha256(folder1: Path, folder2: Path):
+    invalid_files_count = 0
+    for pzz_file_name in os.listdir(folder1):
+        with open(folder1 / pzz_file_name, "rb") as f1, open(folder2 / pzz_file_name, "rb") as f2:
+            if hashlib.sha256( f1.read() ).hexdigest() != hashlib.sha256( f2.read() ).hexdigest() :
+                print(f"ERROR - INVALID FILE : {pzz_file_name}")
+                invalid_files_count +=1
+    print(f"Invalid files : {invalid_files_count}/{len(os.listdir(folder1))}")
+
+
 def get_argparser():
     parser = argparse.ArgumentParser(description='TEST TOOL')
     parser.add_argument('input_path',  metavar='INPUT',  help='')
@@ -15,17 +30,22 @@ def get_argparser():
     group.add_argument('-tdc',  '--test-decompress-compress',  action='store_true', help="")
     group.add_argument('-tbup', '--test-batch-unpack-pack',    action='store_true', help="""
         -tbup source_pzz_folder
-        source_pzz_folder  : put all pzz in this folder
-        pzzu : will be created with all unpacked pzz from pzz folder
-        pzz2 : will be created with all packed pzz from pzzu folder
-        then it will print the file name when file sha256 is different between source_pzz_folder and pzz2 folder""")
+            source_pzz_folder  : put all pzz in this folder
+            pzzu : will be created with all unpacked pzz from pzz folder
+            pzz2 : will be created with all packed pzz from pzzu folder
+        print file_name when sha256 is different between source_pzz_folder and pzz2 folder""")
+    group.add_argument('-tbunpzzpzz', '--test-batch-unpzz-pzz',    action='store_true', help="""
+        -tbunpzzpzz source_pzz_folder
+            source_pzz_folder  : put all pzz in this folder
+            pzzu : will be created with all unpzz pzz from pzz folder
+            pzz2 : will be created with all pzz(pzz_folder) from pzzu folder
+        print file_name when sha256 is different between source_pzz_folder and pzz2 folder""")
     group.add_argument('-tctplh', '--test-check-tpl-headers',   action='store_true', help="-tctplh afs_data_folder : check all files headers in the afs_data and print those who have the tpl magicfile")
     group.add_argument('-td', '--test-decompress',              action='store_true', help="""
         pzz : put all pzz in this folder
         then tip "pzztool.py -td"
         decompressed_tpl_files : will be created with all decompressed files from pzzu having the tpl header
         The script will then check that tpls are correctly decompressed with their specific characteristics""")
-
     return parser
 
 
@@ -54,18 +74,34 @@ if __name__ == '__main__':
         for invalid in listofinvalid:
             print(invalid)
     elif args.test_batch_unpack_pack:
-        # compare le sha256 de chaque PZZ du dossier passé en argument et pzz2 puis affiche le nom de fichier en cas de différence
         print("# TEST : BATCH UNPACK PACK")
-        os.system(f"python pzztool.py -bu {args.input_path} pzzu -v")
-        os.system("python pzztool.py -bp pzzu pzz2 -v")
 
-        invalid_files_count = 0
-        for pzz_file_name in os.listdir(p_input):
-            with open(p_input / pzz_file_name, "rb") as f1, open(f"pzz2/{pzz_file_name}", "rb") as f2:
-                if hashlib.sha256( f1.read() ).hexdigest() != hashlib.sha256( f2.read() ).hexdigest() :
-                    print(f"ERROR - INVALID FILE : {pzz_file_name}")
-                    invalid_files_count +=1
-        print(f"Invalid files : {invalid_files_count}/{len(os.listdir(p_input))}")
+        os.system(f"python pzztool.py -bu {args.input_path} pzzu")
+        os.system("python pzztool.py -bp pzzu pzz2")
+        verify_sha256(p_input, Path("pzz2"))
+    elif args.test_batch_unpzz_pzz:
+        os.system(f"python pzztool.py -bunpzz {args.input_path} pzzu")
+        os.system("python pzztool.py -bpzz pzzu pzz2")
+        verify_sha256(p_input, Path("pzz2"))
+
+        # Clean du dossier pzz2 généré par le script
+        shutil.rmtree("pzz2")
+
+        """
+            si pzz : U -> decomp / testé sur les fichiers car l'unpzz décompresse par défaut
+            si pzz : U -> comp   / à tester
+            si pzz : C -> decomp / testé sur les fichiers car l'unpzz décompresse par défaut
+            si pzz : C -> comp   / à tester
+        """
+        # On parcours tous les dossiers : si U -> comp ; si C -> comp : compression de tous les fichiers peu importe le type
+        for pzz_folder in os.listdir("pzzu"):
+            for pzz_file_part_name in os.listdir("pzzu/"+pzz_folder):
+                # créé un nouveau fichier compressé, à côté de l'original
+                os.system(f"python pzztool.py -c pzzu/{pzz_folder}/{pzz_file_part_name}")
+                # supprime l'original
+                os.remove(f"pzzu/{pzz_folder}/{pzz_file_part_name}")
+        os.system("python pzztool.py -bpzz pzzu pzz2")
+        verify_sha256(p_input, Path("pzz2"))
     elif args.test_check_tpl_headers:
         # Démontre que SEUL les TPLs ont ce magicfile
         # TEST OK