fix: resubmit #198/#200/#201/#202 with correct commit authorship

contracts/stellar-micropay-contract/src/lib.rs

@@ -657,6 +657,69 @@ mod tests {
         client.send_tip(&token_id, &from, &to, &amount);
     }
 
+    /// Issue #202 — send_tip must emit a tip event containing both sender and
+    /// recipient without a borrow/move conflict on `from`.
+    #[test]
+    fn test_send_tip_emits_event_with_from_and_to() {
+        use soroban_sdk::{testutils::Events, vec, IntoVal};
+
+        let env = Env::default();
+        let contract_id = env.register_contract(None, MicroPayContract);
+        let client = MicroPayContractClient::new(&env, &contract_id);
+
+        let admin = Address::generate(&env);
+        client.initialize(&admin);
+
+        let from = Address::generate(&env);
+        let to = Address::generate(&env);
+        let amount: i128 = 250;
+
+        env.mock_all_auths();
+        let token_id = create_token(&env, &admin, &from, amount);
+        client.send_tip(&token_id, &from, &to, &amount);
+
+        let events = env.events().all();
+        // Two events: init (from initialize) + tip.
+        assert_eq!(events.len(), 2);
+        let tip_event = events.get(1).unwrap();
+        // Topic must be (Symbol("tip"), from, to).
+        let expected_topics = (Symbol::new(&env, "tip"), from.clone(), to.clone()).into_val(&env);
+        assert_eq!(tip_event.1, expected_topics);
+        // Data must be the amount.
+        let expected_data = amount.into_val(&env);
+        assert_eq!(tip_event.2, expected_data);
+    }
+
+    /// Issue #201 — TipTotal and TipCount must survive across separate env
+    /// storage reads (persistent, not instance). Verifies the keys don't
+    /// collide or disappear between calls.
+    #[test]
+    fn test_tip_totals_are_per_recipient_persistent() {
+        let env = Env::default();
+        let contract_id = env.register_contract(None, MicroPayContract);
+        let client = MicroPayContractClient::new(&env, &contract_id);
+
+        let admin = Address::generate(&env);
+        client.initialize(&admin);
+
+        let from = Address::generate(&env);
+        let alice = Address::generate(&env);
+        let bob = Address::generate(&env);
+
+        env.mock_all_auths();
+        let token_id = create_token(&env, &admin, &from, 1000);
+
+        client.send_tip(&token_id, &from, &alice, &300);
+        client.send_tip(&token_id, &from, &alice, &200);
+        client.send_tip(&token_id, &from, &bob, &400);
+
+        // Alice and Bob totals must be independent (persistent per-address keys).
+        assert_eq!(client.get_tip_total(&alice), 500);
+        assert_eq!(client.get_tip_count(&alice), 2);
+        assert_eq!(client.get_tip_total(&bob), 400);
+        assert_eq!(client.get_tip_count(&bob), 1);
+    }
+
     // ── Escrow tests ────────────────────────────────────────────────────────
 
     fn advance_ledger(env: &Env, to_sequence: u32) {