Fix BaseException catch in test files

Replace bare except clauses with 'except Exception' to avoid
catching system-exiting exceptions like KeyboardInterrupt and
SystemExit, which should not be suppressed.

Fixes: GitHub CodeQL Alerts #15, #16, #17
Rule: py/catch-base-exception
Signed-off-by: Bernd Schubert <bernd@bsbernd.com>

test/test_ctests.py

@@ -105,7 +105,7 @@ def test_notify1(tmpdir, name, notify, output_checker):
         try:
             umount(mount_process, mnt_dir)
             logger.debug("Umount disabled")
-        except:
+        except Exception:
             logger.error(f"Failure in unmount: '{' '.join(cmdline)}'")
             cleanup(mount_process, mnt_dir)
         logger.debug("Unmount completed")
@@ -148,7 +148,7 @@ def test_notify_file_size(tmpdir, notify, output_checker):
     else:
         try:
             umount(mount_process, mnt_dir)
-        except:
+        except Exception:
             logger.error(f"Failure in unmount: '{' '.join(cmdline)}'")
             cleanup(mount_process, mnt_dir)
         logger.debug("Unmount completed")

test/util.py

@@ -250,7 +250,7 @@ os.environ['PATH'] = '%s:%s' % (pjoin(basename, 'example'), os.environ['PATH'])
 
 try:
     (fuse_proto, fuse_caps) = get_printcap()
-except:
+except Exception:
     # Rely on test to raise error
     fuse_proto = (0,0)
     fuse_caps = set()