From 0f55fd7f9063a8c91b717fa78d64b8c0e2fa48b5 Mon Sep 17 00:00:00 2001
From: Hugo Trentesaux <hugo@trentesaux.fr>
Date: Mon, 13 Jan 2025 19:43:23 +0100
Subject: [PATCH] fix bug from #276

---
 pallets/smith-members/src/lib.rs   | 2 +-
 pallets/smith-members/src/tests.rs | 9 ++++-----
 2 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/pallets/smith-members/src/lib.rs b/pallets/smith-members/src/lib.rs
index 153189d98..e7c48962a 100644
--- a/pallets/smith-members/src/lib.rs
+++ b/pallets/smith-members/src/lib.rs
@@ -519,7 +519,7 @@ impl<T: Config> Pallet<T> {
 
     /// Handle the removal of Smiths whose expiration time has been reached at a given session index.
     fn on_exclude_expired_smiths(at: SessionIndex) {
-        if let Some(smiths_to_remove) = ExpiresOn::<T>::get(at) {
+        if let Some(smiths_to_remove) = ExpiresOn::<T>::take(at) {
             for smith in smiths_to_remove {
                 if let Some(smith_meta) = Smiths::<T>::get(smith) {
                     if let Some(expires_on) = smith_meta.expires_on {
diff --git a/pallets/smith-members/src/tests.rs b/pallets/smith-members/src/tests.rs
index c04bd2d17..c92bffb68 100644
--- a/pallets/smith-members/src/tests.rs
+++ b/pallets/smith-members/src/tests.rs
@@ -628,10 +628,9 @@ fn certifying_an_online_smith() {
     });
 }
 
-/// Shows that scheduled expiration stay scheduled forever, even in the past
-/// This is harmful for storage because we store unnecessary data
+/// Test that scheduled expiration is removed after session
 #[test]
-fn expires_on_keeps_growing() {
+fn expires_on_cleans_up() {
     new_test_ext(GenesisConfig {
         initial_smiths: btreemap![
             1 => (true, vec![2, 3]),
@@ -666,8 +665,8 @@ fn expires_on_keeps_growing() {
                 received_certs: vec![]
             })
         );
-        // but ExpiresOn schedule is still there (and will stay forever)
-        assert_eq!(ExpiresOn::<Runtime>::get(5), Some(vec![1]));
+        // ExpiresOn is clean
+        assert_eq!(ExpiresOn::<Runtime>::get(5), None);
     });
 }
 
-- 
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