tests: protect logging configuration against the test being ran

Tool can adjust logging level, and will be cranking it to
full debug shortly for better test failure output capturing.

Signed-off-by: Brian Harring <ferringb@gmail.com>

Author: ferringb

tests/conftest.py

@@ -1,3 +1,5 @@
+import copy
+import logging
 import os
 import shutil
 import tempfile
@@ -13,7 +15,7 @@
 
 @pytest.fixture(scope="session")
 def temporary_home():
-    """Generate a temporary directory and set$HOME to it."""
+    """Generate a temporary directory and set $HOME to it."""
     old_home = os.environ.get("HOME")
     new_home = None
     try:
@@ -28,6 +30,18 @@ def temporary_home():
             shutil.rmtree(new_home)  # pyright: ignore[reportArgumentType]
 
 
+@pytest.fixture(autouse=True, scope="function")
+def protect_logging():
+    """Protect pytest logging configuration from any tool logging manipulation"""
+    state = None
+    try:
+        state = copy.deepcopy(logging.root)
+        yield
+    finally:
+        if state is not None:
+            logging.root = state
+
+
 @pytest.fixture(scope="session")
 def tool(temporary_home):
     """Generate a tool utility for running pkgdev."""