diff --git a/test_date2name.py b/test_date2name.py
index ca1ce74..5d605e7 100644
--- a/test_date2name.py
+++ b/test_date2name.py
@@ -309,3 +309,40 @@ def test_folder_pattern_default(arg1, name=TFOLDER):
     assert os.path.isdir(new)            # presence stamped folder
     os.rmdir(new)
     assert os.path.isdir(new) is False   # space cleaning
+
+@pytest.mark.folders
+@pytest.mark.compact
+@pytest.mark.parametrize("arg1", ["-C", "--compact",
+                                  "-C -d", "--compact -d",
+                                  "-C --directories", "--compact --directories",
+                                  "-C -m", "--compact -m",
+                                  "-C --mtime", "--compact --mtime",
+                                  "-C -c", "--compact -c",
+                                  "-C --ctime", "--compact --ctime"])
+def test_folder_pattern_compact(arg1, name=TFOLDER):
+    """Prepend 'YYYYMMDD_' to the folder name."""
+    prepare_testfolder(name)
+    day = str("")
+    new = str("")
+
+    if arg1 in ["-C", "--compact",
+                "-C -d", "--compact -d",
+                "-C --directories", "--compact --directories",
+                "-C -m", "--compact -m",
+                "-C --mtime", "--compact --mtime"]:
+        day = query_modification_time(name).split()[0]
+
+    elif arg1 in ["-C -c", "--compact -c",
+                  "-C --ctime", "--compact --ctime"]:
+        day = query_creation_time(name).split()[0]
+
+    # drop the hyphens in the datestamp:
+    day = day.replace("-", "")
+
+    new = "_".join([day, name])
+    test = getoutput(f"python3 {PROGRAM} {name} {arg1}")
+
+    assert os.path.isdir(name) is False  # absence unstamped folder
+    assert os.path.isdir(new)            # presence stamped folder
+    os.rmdir(new)
+    assert os.path.isdir(new) is False   # space cleaning
diff --git a/test_generator.org b/test_generator.org
index e5f4996..0f76fba 100755
--- a/test_generator.org
+++ b/test_generator.org
@@ -467,7 +467,7 @@
             assert os.path.isfile("test.txt") is False
       #+end_src
 
-*** perform the tests on folders [1/6]
+*** perform the tests on folders [2/6]
 
     At present, most of the instructions already defined and used in section
     "test on files" is repeated with small adjustments for checking date2name's
@@ -502,7 +502,46 @@
             assert os.path.isdir(new) is False   # space cleaning
       #+end_src
       
-    + [ ] compact pattern, YYYYMMDD_ prepended
+    + [X] compact pattern, YYYYMMDD_ prepended
+      #+begin_src python :tangle test_date2name.py
+        @pytest.mark.folders
+        @pytest.mark.compact
+        @pytest.mark.parametrize("arg1", ["-C", "--compact",
+                                          "-C -d", "--compact -d",
+                                          "-C --directories", "--compact --directories",
+                                          "-C -m", "--compact -m",
+                                          "-C --mtime", "--compact --mtime",
+                                          "-C -c", "--compact -c",
+                                          "-C --ctime", "--compact --ctime"])
+        def test_folder_pattern_compact(arg1, name=TFOLDER):
+            """Prepend 'YYYYMMDD_' to the folder name."""
+            prepare_testfolder(name)
+            day = str("")
+            new = str("")
+        
+            if arg1 in ["-C", "--compact",
+                        "-C -d", "--compact -d",
+                        "-C --directories", "--compact --directories",
+                        "-C -m", "--compact -m",
+                        "-C --mtime", "--compact --mtime"]:
+                day = query_modification_time(name).split()[0]
+        
+            elif arg1 in ["-C -c", "--compact -c",
+                          "-C --ctime", "--compact --ctime"]:
+                day = query_creation_time(name).split()[0]
+        
+            # drop the hyphens in the datestamp:
+            day = day.replace("-", "")
+        
+            new = "_".join([day, name])
+            test = getoutput(f"python3 {PROGRAM} {name} {arg1}")
+        
+            assert os.path.isdir(name) is False  # absence unstamped folder
+            assert os.path.isdir(new)            # presence stamped folder
+            os.rmdir(new)
+            assert os.path.isdir(new) is False   # space cleaning
+        
+      #+end_src
       
     + [ ] month pattern, YYYY-MM_ prepended