filesystem: Support selecting MF from MF
This was currently not handled in build_select_path_to(), resulting in
weird exceptions like 'Cannot determine path from MF(3f00) to MF(3f00)'
Change-Id: I41b9f047ee5dc6b91b487f370f011af994aaca04
diff --git a/pySim/filesystem.py b/pySim/filesystem.py
index 04e849b..22ff60d 100644
--- a/pySim/filesystem.py
+++ b/pySim/filesystem.py
@@ -149,6 +149,9 @@
def build_select_path_to(self, target: 'CardFile') -> Optional[List['CardFile']]:
"""Build the relative sequence of files we need to traverse to get from us to 'target'."""
+ # special-case handling for selecting MF while we MF is selected
+ if target == target.get_mf():
+ return [target]
cur_fqpath = self.fully_qualified_path_fobj()
target_fqpath = target.fully_qualified_path_fobj()
inter_path = []