Merge bitcoin/bitcoin#25976: QA: rpc_blockchain: Test output of getblock verbosity 0, False, and True

f663b43df0 QA: rpc_blockchain: Test output of getblock verbosity 0, False, and True (Luke Dashjr)

Pull request description:

  Currently getblock's "verbosity" is documented as a NUM, though it has a fallback to Boolean for the (deprecated?) "verbose" alias.

  Since we've been doing more generic type-checking on RPC stuff, I think it would be a good idea to actually test the Boolean values work.

  I didn't see an existing test for verbosity=0, so this adds that too.

ACKs for top commit:
  aureleoules:
    ACK f663b43df0.

Tree-SHA512: 321a7795a2f32e469d28879dd323c85cb6b221828030e2a33ad9afd35a648191151a79b04e359b2f58314e43360f81c25f05be07deb42f61efdf556850a7266c

test/functional/rpc_blockchain.py

@@ -38,6 +38,7 @@ from test_framework.messages import (
     msg_block,
 )
 from test_framework.p2p import P2PInterface
+from test_framework.script import hash256
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import (
     assert_equal,
@@ -485,6 +486,10 @@ class BlockchainTest(BitcoinTestFramework):
         self.wallet.send_self_transfer(fee_rate=fee_per_kb, from_node=node)
         blockhash = self.generate(node, 1)[0]
 
+        def assert_hexblock_hashes(verbosity):
+            block = node.getblock(blockhash, verbosity)
+            assert_equal(blockhash, hash256(bytes.fromhex(block[:160]))[::-1].hex())
+
         def assert_fee_not_in_block(verbosity):
             block = node.getblock(blockhash, verbosity)
             assert 'fee' not in block['tx'][1]
@@ -519,8 +524,13 @@ class BlockchainTest(BitcoinTestFramework):
                 for vin in tx["vin"]:
                     assert "prevout" not in vin
 
+        self.log.info("Test that getblock with verbosity 0 hashes to expected value")
+        assert_hexblock_hashes(0)
+        assert_hexblock_hashes(False)
+
         self.log.info("Test that getblock with verbosity 1 doesn't include fee")
         assert_fee_not_in_block(1)
+        assert_fee_not_in_block(True)
 
         self.log.info('Test that getblock with verbosity 2 and 3 includes expected fee')
         assert_fee_in_block(2)