test: add unit test for redundant payment (#4860)

If the payee and payer are the same account, then the transaction fails in preflight with temREDUNDANT.
XRPLF · Jan 31, 2024 · 90d463b · 90d463b
1 parent 22cdb57
commit 90d463b
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/src/test/app/TxQ_test.cpp b/src/test/app/TxQ_test.cpp
@@ -1019,6 +1019,9 @@ class TxQPosNegFlows_test : public beast::unit_test::suite
         // Fail in preflight
         env(pay(alice, bob, XRP(-1000)), ter(temBAD_AMOUNT));
 
+        // Fail in preflight
+        env(pay(alice, alice, XRP(100)), ter(temREDUNDANT));
+
         // Fail in preclaim
         env(noop(alice), fee(XRP(100000)), ter(terINSUF_FEE_B));
     }