From c0a5fceee9858afd24fe0bf655b7b30728e96e78 Mon Sep 17 00:00:00 2001
From: Hennadii Stepanov <32963518+hebasto@users.noreply.github.com>
Date: Sat, 27 Jun 2020 13:21:12 +0300
Subject: [PATCH] test: Add test for erase orphan tx conflicted by block

---
 test/functional/p2p_invalid_tx.py | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/test/functional/p2p_invalid_tx.py b/test/functional/p2p_invalid_tx.py
index 0eb099b1d5a..54d4f966d34 100755
--- a/test/functional/p2p_invalid_tx.py
+++ b/test/functional/p2p_invalid_tx.py
@@ -193,6 +193,35 @@ class InvalidTxRequestTest(BitcoinTestFramework):
         with node.assert_debug_log(["Erased 1 orphan tx included or conflicted by block"]):
             node.p2ps[0].send_blocks_and_test([block_A], node, success=True)
 
+        self.log.info('Test that a transaction in the orphan pool conflicts with a new tip block causes erase this transaction from the orphan pool')
+        tx_withhold_until_block_B = CTransaction()
+        tx_withhold_until_block_B.vin.append(CTxIn(outpoint=COutPoint(tx_withhold_until_block_A.sha256, 1)))
+        tx_withhold_until_block_B.vout.append(CTxOut(nValue=11 * COIN, scriptPubKey=SCRIPT_PUB_KEY_OP_TRUE))
+        tx_withhold_until_block_B.calc_sha256()
+
+        tx_orphan_include_by_block_B = CTransaction()
+        tx_orphan_include_by_block_B.vin.append(CTxIn(outpoint=COutPoint(tx_withhold_until_block_B.sha256, 0)))
+        tx_orphan_include_by_block_B.vout.append(CTxOut(nValue=10 * COIN, scriptPubKey=SCRIPT_PUB_KEY_OP_TRUE))
+        tx_orphan_include_by_block_B.calc_sha256()
+
+        tx_orphan_conflict_by_block_B = CTransaction()
+        tx_orphan_conflict_by_block_B.vin.append(CTxIn(outpoint=COutPoint(tx_withhold_until_block_B.sha256, 0)))
+        tx_orphan_conflict_by_block_B.vout.append(CTxOut(nValue=9 * COIN, scriptPubKey=SCRIPT_PUB_KEY_OP_TRUE))
+        tx_orphan_conflict_by_block_B.calc_sha256()
+        self.log.info('Send the orphan ... ')
+        node.p2ps[0].send_txs_and_test([tx_orphan_conflict_by_block_B], node, success=False)
+
+        tip = int(node.getbestblockhash(), 16)
+        height = node.getblockcount() + 1
+        block_B = create_block(tip, create_coinbase(height))
+        block_B.vtx.extend([tx_withhold_until_block_B, tx_orphan_include_by_block_B])
+        block_B.hashMerkleRoot = block_B.calc_merkle_root()
+        block_B.solve()
+
+        self.log.info('Send the block that includes a transaction which conflicts with the previous orphan ... ')
+        with node.assert_debug_log(["Erased 1 orphan tx included or conflicted by block"]):
+            node.p2ps[0].send_blocks_and_test([block_B], node, success=True)
+
 
 if __name__ == '__main__':
     InvalidTxRequestTest().main()