This repository was archived by the owner on Nov 15, 2023. It is now read-only.
This repository was archived by the owner on Nov 15, 2023. It is now read-only.
clear_prefix iterates only over backend ignoring the overlay #426
Description
While deciding which keys to remove from the storage, clear_prefix iterates only over the backend and ignores the changes in the overlay.
Example:
# 1. At the `Externalities` creation time we have the following state:
backend = ["dog" => 1, "cat" => 2], overlay = []
# 2. Next `set_storage("doggy" => 3)` is called
backend = ["dog" => 1, "cat" => 2], overlay = ["doggy" => 3]
# 3. Next `clear_prefix("dog")` is called (and we iterate only over backend keys)
backend = ["dog" => 1, "cat" => 2], overlay = ["dog" => None, "doggy" => 3]
# 4. Transaction commits
backend = ["cat" => 2, "doggy" => 3]