test: Remove True argument to CBlock::serialize

Unnamed arguments are confusing as to what they mean without looking up
the function signature.

Since segwit is active by default in regtest, and all blocks are
serialized with witness (#15664, c459c5f), remove the argument
`with_witness=True` from all calls to `CBlock::serialize` and
`BlockTransactions::serialize`.

This diff has been created with a script, but is better reviewed without
a scripted diff.

sed -i --regexp-extended -e 's/block(_?[2a-z]*)\.serialize\([a-z_]*=?True/block\1.serialize(/g' $(git grep -l serialize ./test)

test/functional/feature_bip68_sequence.py

@@ -378,7 +378,7 @@ class BIP68Test(BitcoinTestFramework):
         add_witness_commitment(block)
         block.solve()
 
-        self.nodes[0].submitblock(block.serialize(True).hex())
+        self.nodes[0].submitblock(block.serialize().hex())
         assert_equal(self.nodes[0].getbestblockhash(), block.hash)
 
     def activateCSV(self):

test/functional/feature_nulldummy.py

@@ -108,7 +108,7 @@ class NULLDUMMYTest(BitcoinTestFramework):
         witness and add_witness_commitment(block)
         block.rehash()
         block.solve()
-        node.submitblock(block.serialize(True).hex())
+        node.submitblock(block.serialize().hex())
         if (accept):
             assert_equal(node.getbestblockhash(), block.hash)
             self.tip = block.sha256

test/functional/p2p_segwit.py

@@ -111,7 +111,7 @@ def get_virtual_size(witness_block):
 
     Virtual size is base + witness/4."""
     base_size = len(witness_block.serialize(with_witness=False))
-    total_size = len(witness_block.serialize(with_witness=True))
+    total_size = len(witness_block.serialize())
     # the "+3" is so we round up
     vsize = int((3 * base_size + total_size + 3) / 4)
     return vsize
@@ -403,7 +403,7 @@ class SegWitTest(BitcoinTestFramework):
                 block_hash = int(block_hash, 16)
                 block = self.test_node.request_block(block_hash, 2)
                 wit_block = self.test_node.request_block(block_hash, 2 | MSG_WITNESS_FLAG)
-                assert_equal(block.serialize(True), wit_block.serialize(True))
+                assert_equal(block.serialize(), wit_block.serialize())
                 assert_equal(block.serialize(), hex_str_to_bytes(rpc_block))
         else:
             # After activation, witness blocks and non-witness blocks should
@@ -419,15 +419,15 @@ class SegWitTest(BitcoinTestFramework):
             rpc_block = self.nodes[0].getblock(block.hash, False)
             non_wit_block = self.test_node.request_block(block.sha256, 2)
             wit_block = self.test_node.request_block(block.sha256, 2 | MSG_WITNESS_FLAG)
-            assert_equal(wit_block.serialize(True), hex_str_to_bytes(rpc_block))
+            assert_equal(wit_block.serialize(), hex_str_to_bytes(rpc_block))
             assert_equal(wit_block.serialize(False), non_wit_block.serialize())
-            assert_equal(wit_block.serialize(True), block.serialize(True))
+            assert_equal(wit_block.serialize(), block.serialize())
 
             # Test size, vsize, weight
             rpc_details = self.nodes[0].getblock(block.hash, True)
-            assert_equal(rpc_details["size"], len(block.serialize(True)))
+            assert_equal(rpc_details["size"], len(block.serialize()))
             assert_equal(rpc_details["strippedsize"], len(block.serialize(False)))
-            weight = 3 * len(block.serialize(False)) + len(block.serialize(True))
+            weight = 3 * len(block.serialize(False)) + len(block.serialize())
             assert_equal(rpc_details["weight"], weight)
 
             # Upgraded node should not ask for blocks from unupgraded
@@ -884,13 +884,13 @@ class SegWitTest(BitcoinTestFramework):
 
         # We can't send over the p2p network, because this is too big to relay
         # TODO: repeat this test with a block that can be relayed
-        self.nodes[0].submitblock(block.serialize(True).hex())
+        self.nodes[0].submitblock(block.serialize().hex())
 
         assert self.nodes[0].getbestblockhash() != block.hash
 
         block.vtx[0].wit.vtxinwit[0].scriptWitness.stack.pop()
         assert get_virtual_size(block) < MAX_BLOCK_BASE_SIZE
-        self.nodes[0].submitblock(block.serialize(True).hex())
+        self.nodes[0].submitblock(block.serialize().hex())
 
         assert self.nodes[0].getbestblockhash() == block.hash
 
@@ -969,7 +969,7 @@ class SegWitTest(BitcoinTestFramework):
         assert_equal(vsize, MAX_BLOCK_BASE_SIZE + 1)
         # Make sure that our test case would exceed the old max-network-message
         # limit
-        assert len(block.serialize(True)) > 2 * 1024 * 1024
+        assert len(block.serialize()) > 2 * 1024 * 1024
 
         test_witness_block(self.nodes[0], self.test_node, block, accepted=False)
 
@@ -997,14 +997,14 @@ class SegWitTest(BitcoinTestFramework):
         add_witness_commitment(block, nonce=1)
         block.vtx[0].wit = CTxWitness()  # drop the nonce
         block.solve()
-        self.nodes[0].submitblock(block.serialize(True).hex())
+        self.nodes[0].submitblock(block.serialize().hex())
         assert self.nodes[0].getbestblockhash() != block.hash
 
         # Now redo commitment with the standard nonce, but let bitcoind fill it in.
         add_witness_commitment(block, nonce=0)
         block.vtx[0].wit = CTxWitness()
         block.solve()
-        self.nodes[0].submitblock(block.serialize(True).hex())
+        self.nodes[0].submitblock(block.serialize().hex())
         assert_equal(self.nodes[0].getbestblockhash(), block.hash)
 
         # This time, add a tx with non-empty witness, but don't supply
@@ -1019,7 +1019,7 @@ class SegWitTest(BitcoinTestFramework):
         block_2.vtx[0].vout.pop()
         block_2.vtx[0].wit = CTxWitness()
 
-        self.nodes[0].submitblock(block_2.serialize(True).hex())
+        self.nodes[0].submitblock(block_2.serialize().hex())
         # Tip should not advance!
         assert self.nodes[0].getbestblockhash() != block_2.hash
 

test/functional/test_framework/messages.py

@@ -1155,7 +1155,7 @@ class msg_generic:
 class msg_witness_block(msg_block):
     __slots__ = ()
     def serialize(self):
-        r = self.block.serialize(with_witness=True)
+        r = self.block.serialize()
         return r
 
 
@@ -1454,5 +1454,5 @@ class msg_witness_blocktxn(msg_blocktxn):
 
     def serialize(self):
         r = b""
-        r += self.block_transactions.serialize(with_witness=True)
+        r += self.block_transactions.serialize()
         return r

test/functional/wallet_bumpfee.py

@@ -360,7 +360,7 @@ def submit_block_with_tx(node, tx):
     block.hashMerkleRoot = block.calc_merkle_root()
     add_witness_commitment(block)
     block.solve()
-    node.submitblock(block.serialize(True).hex())
+    node.submitblock(block.serialize().hex())
     return block
 
 def test_no_more_inputs_fails(rbf_node, dest_address):