new error names

Author: tfeldmann

fs/errors.py

@@ -241,6 +241,18 @@ class RemoveRootError(OperationFailed):
     default_message = "root directory may not be removed"
 
 
+class IllegalMoveDestination(OperationFailed):
+    """Attempt to move a folder into its own subfolder."""
+
+    default_message = "'{path}' cannot be moved into itself"
+
+
+class IllegalCopyDestination(OperationFailed):
+    """Attempt to copy a folder into its own subfolder."""
+
+    default_message = "'{path}' cannot be copied into itself"
+
+
 class ResourceError(FSError):
     """Base exception class for error associated with a specific resource."""
 
@@ -304,12 +316,6 @@ class DirectoryNotEmpty(ResourceError):
     default_message = "directory '{path}' is not empty"
 
 
-class InvalidMoveOperation(ResourceError):
-    """Attempt to move a folder into its own subfolder."""
-
-    default_message = "you cannot move '{path}' into its own subfolder"
-
-
 class ResourceLocked(ResourceError):
     """Attempt to use a locked resource."""
 

fs/test.py

@@ -1924,7 +1924,7 @@ def test_movedir_into_its_own_subfolder(self):
         sub = folder.makedir("sub")
         sub.writetext("file2.txt", "Hello2")
 
-        with self.assertRaises(errors.InvalidMoveOperation):
+        with self.assertRaises(errors.IllegalMoveDestination):
             self.fs.movedir("folder", "folder/sub/")
 
     def test_match(self):