Clarify behavior of list/get on files/directories

Author: idle-code

contextshell/backends/FilesystemTree.py

@@ -29,7 +29,7 @@ def contains_action(self, target: NodePath, path: NodePath) -> bool:
     def get_action(self, target: NodePath):
         full_path = self._to_os_path(target)
         if full_path.is_dir():
-            raise NotSupportedError("Operation not defined for directories")
+            return None
         return full_path.read_text()
 
     def is_file_action(self, target: NodePath) -> bool:
@@ -43,7 +43,7 @@ def is_directory_action(self, target: NodePath) -> bool:
     def list_action(self, target: NodePath) -> List[NodePath]:
         dir_path = self._to_os_path(target)
         if not dir_path.is_dir():
-            raise NotSupportedError("Operation not defined for files")
+            return []
         return list(sorted([NodePath(f.name) for f in dir_path.iterdir()]))
 
     def list_actions_action(self, target: NodePath) -> List[NodePath]:

tests/functional/FilesystemTests.py

@@ -93,7 +93,6 @@ def test_get_file_contents(self):
     def test_get_directory_contents(self):
         """
         $ .dir: get
-        NotSupportedError: Operation not defined for directories
         """
 
 
@@ -147,7 +146,6 @@ def test_nested(self):
     def test_file(self):
         """
         $ .file: list
-        NotSupportedError: Operation not defined for files
         """
 
     @script_test