test: Add tests for block_info in gettxoutsetinfo

This additional data will automatically be returned if the coinstats index is used.

test/functional/feature_coinstatsindex.py

@@ -9,6 +9,25 @@ between a node running the coinstatsindex and a node without
 the index.
 """
 
+from decimal import Decimal
+
+from test_framework.blocktools import (
+    create_block,
+    create_coinbase,
+)
+from test_framework.messages import (
+    COIN,
+    COutPoint,
+    CTransaction,
+    CTxIn,
+    CTxOut,
+    ToHex,
+)
+from test_framework.script import (
+    CScript,
+    OP_FALSE,
+    OP_RETURN,
+)
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import (
     assert_equal,
@@ -32,6 +51,13 @@ class CoinStatsIndexTest(BitcoinTestFramework):
     def run_test(self):
         self._test_coin_stats_index()
 
+    def block_sanity_check(self, block_info):
+        block_subsidy = 50
+        assert_equal(
+            block_info['prevout_spent'] + block_subsidy,
+            block_info['new_outputs_ex_coinbase'] + block_info['coinbase'] + block_info['unspendable']
+        )
+
     def _test_coin_stats_index(self):
         node = self.nodes[0]
         index_node = self.nodes[1]
@@ -85,5 +111,118 @@ class CoinStatsIndexTest(BitcoinTestFramework):
             # It does not work without coinstatsindex
             assert_raises_rpc_error(-8, "Querying specific block heights requires coinstatsindex", node.gettxoutsetinfo, hash_option, 102)
 
+        self.log.info("Test gettxoutsetinfo() with index and verbose flag")
+
+        for hash_option in index_hash_options:
+            # Genesis block is unspendable
+            res4 = index_node.gettxoutsetinfo(hash_option, 0)
+            assert_equal(res4['total_unspendable_amount'], 50)
+            assert_equal(res4['block_info'], {
+                'unspendable': 50,
+                'prevout_spent': 0,
+                'new_outputs_ex_coinbase': 0,
+                'coinbase': 0,
+                'unspendables': {
+                    'genesis_block': 50,
+                    'bip30': 0,
+                    'scripts': 0,
+                    'unclaimed_rewards': 0
+                }
+            })
+            self.block_sanity_check(res4['block_info'])
+
+            # Test an older block height that included a normal tx
+            res5 = index_node.gettxoutsetinfo(hash_option, 102)
+            assert_equal(res5['total_unspendable_amount'], 50)
+            assert_equal(res5['block_info'], {
+                'unspendable': 0,
+                'prevout_spent': 50,
+                'new_outputs_ex_coinbase': Decimal('49.99995560'),
+                'coinbase': Decimal('50.00004440'),
+                'unspendables': {
+                    'genesis_block': 0,
+                    'bip30': 0,
+                    'scripts': 0,
+                    'unclaimed_rewards': 0
+                }
+            })
+            self.block_sanity_check(res5['block_info'])
+
+        # Generate and send a normal tx with two outputs
+        tx1_inputs = []
+        tx1_outputs = {self.nodes[0].getnewaddress(): 21, self.nodes[0].getnewaddress(): 42}
+        raw_tx1 = self.nodes[0].createrawtransaction(tx1_inputs, tx1_outputs)
+        funded_tx1 = self.nodes[0].fundrawtransaction(raw_tx1)
+        signed_tx1 = self.nodes[0].signrawtransactionwithwallet(funded_tx1['hex'])
+        tx1_txid = self.nodes[0].sendrawtransaction(signed_tx1['hex'])
+
+        # Find the right position of the 21 BTC output
+        tx1_final = self.nodes[0].gettransaction(tx1_txid)
+        for output in tx1_final['details']:
+            if output['amount'] == Decimal('21.00000000') and output['category'] == 'receive':
+                n = output['vout']
+
+        # Generate and send another tx with an OP_RETURN output (which is unspendable)
+        tx2 = CTransaction()
+        tx2.vin.append(CTxIn(COutPoint(int(tx1_txid, 16), n), b''))
+        tx2.vout.append(CTxOut(int(20.99 * COIN), CScript([OP_RETURN] + [OP_FALSE]*30)))
+        tx2_hex = self.nodes[0].signrawtransactionwithwallet(ToHex(tx2))['hex']
+        self.nodes[0].sendrawtransaction(tx2_hex)
+
+        # Include both txs in a block
+        self.nodes[0].generate(1)
+        self.sync_all()
+
+        self.wait_until(lambda: not try_rpc(-32603, "Unable to read UTXO set", index_node.gettxoutsetinfo, 'muhash'))
+        for hash_option in index_hash_options:
+            # Check all amounts were registered correctly
+            res6 = index_node.gettxoutsetinfo(hash_option, 108)
+            assert_equal(res6['total_unspendable_amount'], Decimal('70.98999999'))
+            assert_equal(res6['block_info'], {
+                'unspendable': Decimal('20.98999999'),
+                'prevout_spent': 111,
+                'new_outputs_ex_coinbase': Decimal('89.99993620'),
+                'coinbase': Decimal('50.01006381'),
+                'unspendables': {
+                    'genesis_block': 0,
+                    'bip30': 0,
+                    'scripts': Decimal('20.98999999'),
+                    'unclaimed_rewards': 0
+                }
+            })
+            self.block_sanity_check(res6['block_info'])
+
+        # Create a coinbase that does not claim full subsidy and also
+        # has two outputs
+        cb = create_coinbase(109, nValue=35)
+        cb.vout.append(CTxOut(5 * COIN, CScript([OP_FALSE])))
+        cb.rehash()
+
+        # Generate a block that includes previous coinbase
+        tip = self.nodes[0].getbestblockhash()
+        block_time = self.nodes[0].getblock(tip)['time'] + 1
+        block = create_block(int(tip, 16), cb, block_time)
+        block.solve()
+        self.nodes[0].submitblock(ToHex(block))
+        self.sync_all()
+
+        self.wait_until(lambda: not try_rpc(-32603, "Unable to read UTXO set", index_node.gettxoutsetinfo, 'muhash'))
+        for hash_option in index_hash_options:
+            res7 = index_node.gettxoutsetinfo(hash_option, 109)
+            assert_equal(res7['total_unspendable_amount'], Decimal('80.98999999'))
+            assert_equal(res7['block_info'], {
+                'unspendable': 10,
+                'prevout_spent': 0,
+                'new_outputs_ex_coinbase': 0,
+                'coinbase': 40,
+                'unspendables': {
+                    'genesis_block': 0,
+                    'bip30': 0,
+                    'scripts': 0,
+                    'unclaimed_rewards': 10
+                }
+            })
+            self.block_sanity_check(res7['block_info'])
+
 if __name__ == '__main__':
     CoinStatsIndexTest().main()

test/functional/test_framework/blocktools.py

@@ -115,7 +115,7 @@ def script_BIP34_coinbase_height(height):
     return CScript([CScriptNum(height)])
 
 
-def create_coinbase(height, pubkey=None, extra_output_script=None, fees=0):
+def create_coinbase(height, pubkey=None, extra_output_script=None, fees=0, nValue=50):
     """Create a coinbase transaction.
 
     If pubkey is passed in, the coinbase output will be a P2PK output;
@@ -126,7 +126,8 @@ def create_coinbase(height, pubkey=None, extra_output_script=None, fees=0):
     coinbase = CTransaction()
     coinbase.vin.append(CTxIn(COutPoint(0, 0xffffffff), script_BIP34_coinbase_height(height), 0xffffffff))
     coinbaseoutput = CTxOut()
-    coinbaseoutput.nValue = 50 * COIN
+    coinbaseoutput.nValue = nValue * COIN
+    if nValue == 50:
         halvings = int(height / 150)  # regtest
         coinbaseoutput.nValue >>= halvings
         coinbaseoutput.nValue += fees