v0.26.7

src/balance/tests/part_01.rs

@@ -98,6 +98,23 @@ fn upstream_pool_recycle_limits_are_bounded_and_can_be_disabled() {
     assert!(settings.validate().is_ok());
 }
 
+#[test]
+fn compatible_pool_rebuild_reuses_upstream_clients() {
+    let previous = pool(Algorithm::LeastConnections, StickyMode::Off);
+    let mut rebuilt = pool(Algorithm::LeastConnections, StickyMode::Off);
+    let rebuilt_mut = Arc::get_mut(&mut rebuilt).expect("fresh pool must be uniquely owned");
+
+    assert!(!Arc::ptr_eq(
+        &rebuilt_mut.members[0].backend,
+        &previous.members[0].backend
+    ));
+    rebuilt_mut.reuse_observations(&previous);
+    assert!(Arc::ptr_eq(
+        &rebuilt_mut.members[0].backend,
+        &previous.members[0].backend
+    ));
+}
+
 #[test]
 fn retry_policy_rejects_unbounded_or_non_5xx_configuration() {
     let mut settings = Settings::default();