wallet: Reset reused transactions cache

If a destination is reused we mark the cache of the other transactions going to that destination dirty so they are not accidentally reported as trusted when the cache is hit.

Github-Pull: #17843
Rebased-From: 6fc554f591d8ea1681b8bb25aa12da8d4f023f66

1 files changed, 32 insertions, 1 deletions

diff --git a/test/functional/wallet_avoidreuse.py b/test/functional/wallet_avoidreuse.py
index 55b30afdee..d261fe6343 100755
--- a/test/functional/wallet_avoidreuse.py
+++ b/test/functional/wallet_avoidreuse.py
@@ -88,7 +88,8 @@ class AvoidReuseTest(BitcoinTestFramework):
         self.test_fund_send_fund_send("p2sh-segwit")
         reset_balance(self.nodes[1], self.nodes[0].getnewaddress())
         self.test_fund_send_fund_send("bech32")
-
+        reset_balance(self.nodes[1], self.nodes[0].getnewaddress())
+        self.test_getbalances_used()
 
     def test_persistence(self):
         '''Test that wallet files persist the avoid_reuse flag.'''
@@ -248,5 +249,35 @@ class AvoidReuseTest(BitcoinTestFramework):
         assert_approx(self.nodes[1].getbalance(), 1, 0.001)
         assert_approx(self.nodes[1].getbalance(avoid_reuse=False), 11, 0.001)
 
+    def test_getbalances_used(self):
+        '''
+        getbalances and listunspent should pick up on reused addresses
+        immediately, even for address reusing outputs created before the first
+        transaction was spending from that address
+        '''
+        self.log.info("Test getbalances used category")
+
+        # node under test should be completely empty
+        assert_equal(self.nodes[1].getbalance(avoid_reuse=False), 0)
+
+        new_addr = self.nodes[1].getnewaddress()
+        ret_addr = self.nodes[0].getnewaddress()
+
+        # send multiple transactions, reusing one address
+        for _ in range(11):
+            self.nodes[0].sendtoaddress(new_addr, 1)
+
+        self.nodes[0].generate(1)
+        self.sync_all()
+
+        # send transaction that should not use all the available outputs
+        # per the current coin selection algorithm
+        self.nodes[1].sendtoaddress(ret_addr, 5)
+
+        # getbalances and listunspent should show the remaining outputs
+        # in the reused address as used/reused
+        assert_unspent(self.nodes[1], total_count=2, total_sum=6, reused_count=1, reused_sum=1)
+        assert_balances(self.nodes[1], mine={"used": 1, "trusted": 5})
+
 if __name__ == '__main__':
     AvoidReuseTest().main()