test that the counter works

tests.py

@@ -5,6 +5,8 @@ import os
 import shutil
 import subprocess
 from pathlib import Path
+from io import StringIO
+import sys
 
 import pytest
 
@@ -96,6 +98,16 @@ def test_run_method(tmp_path):
     with pytest.raises(subprocess.CalledProcessError):
         run(["ls", "/doesnotexist"], check=True)
 
+    # test that the counter works correctly:
+    # check that ##-08 is printed when run(["echo", "Good Bye, world!"]) is run
+    # the 8 in ##-08 is present because
+    # this is the 8th run of the `run` function
+    captured_output = StringIO()  # create an in-memory file-like object.
+    sys.stdout = captured_output  # redirect stdout to the file
+    run(["echo", "Good Bye, world!"])
+    sys.stdout = sys.__stdout__  #  restores the original stdout
+    assert "##-08" in captured_output.getvalue()
+
 
 def test_prepare_environment(tmp_path):
     """Simulate running preparation of environment.