Use COINBASE_MATURITY constant in functional tests.

test/functional/wallet_labels.py

@@ -11,6 +11,7 @@ RPCs tested are:
 """
 from collections import defaultdict
 
+from test_framework.blocktools import COINBASE_MATURITY
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import assert_equal, assert_raises_rpc_error
 from test_framework.wallet_util import test_address
@@ -32,7 +33,7 @@ class WalletLabelsTest(BitcoinTestFramework):
         # Note each time we call generate, all generated coins go into
         # the same address, so we call twice to get two addresses w/50 each
         node.generatetoaddress(nblocks=1, address=node.getnewaddress(label='coinbase'))
-        node.generatetoaddress(nblocks=101, address=node.getnewaddress(label='coinbase'))
+        node.generatetoaddress(nblocks=COINBASE_MATURITY + 1, address=node.getnewaddress(label='coinbase'))
         assert_equal(node.getbalance(), 100)
 
         # there should be 2 address groups
@@ -104,7 +105,7 @@ class WalletLabelsTest(BitcoinTestFramework):
             label.verify(node)
             assert_equal(node.getreceivedbylabel(label.name), 2)
             label.verify(node)
-        node.generate(101)
+        node.generate(COINBASE_MATURITY + 1)
 
         # Check that setlabel can assign a label to a new unused address.
         for label in labels:
@@ -124,7 +125,7 @@ class WalletLabelsTest(BitcoinTestFramework):
                 label.add_address(multisig_address)
                 label.purpose[multisig_address] = "send"
                 label.verify(node)
-            node.generate(101)
+            node.generate(COINBASE_MATURITY + 1)
 
         # Check that setlabel can change the label of an address from a
         # different label.