test: Fix test for default location of config.rsc

The tests for the default path of the config.rsc are now performed
optionally. If write permission exists for the standard paths, the
tests are performed with the config.rsc.

tests/common/test_init_modio.py

@@ -4,9 +4,10 @@ __author__ = "Sven Sager"
 __copyright__ = "Copyright (C) 2024 Sven Sager"
 __license__ = "GPLv2"
 
-from os import remove
+from os import remove, makedirs
 from os.path import join, dirname
 from shutil import copyfile
+from warnings import warn
 
 import revpimodio2
 from .. import TestRevPiModIO
@@ -30,11 +31,17 @@ class TestInitModio(TestRevPiModIO):
             "configrsc": join(self.data_dir, "config.rsc"),
         }
 
-        # Datei an richtigen Ort kopieren und löschen
-        copyfile(defaultkwargs["configrsc"], "/opt/KUNBUS/config.rsc")
-        rpi = revpimodio2.RevPiModIO(procimg=self.fh_procimg.name)
-        del rpi
-        remove("/opt/KUNBUS/config.rsc")
+        # Check default path of config.rsc
+        for config_file in ("/opt/KUNBUS/config.rsc", "/etc/revpi/config.rsc"):
+            config_dir = dirname(config_file)
+            try:
+                makedirs(config_dir, exist_ok=True)
+                copyfile(defaultkwargs["configrsc"], config_file)
+            except PermissionError:
+                warn(f"Skip test for default location of '{config_file}' - permission denied")
+            else:
+                revpimodio2.RevPiModIO(procimg=self.fh_procimg.name)
+                remove(config_file)
 
         # RevPiModIO
         rpi = self.modio()