test: Add BitcoinTestFramework::sync_* methods

test/functional/test_framework/test_framework.py

@@ -406,10 +406,16 @@ class BitcoinTestFramework(metaclass=BitcoinTestMetaClass):
         connect_nodes_bi(self.nodes, 1, 2)
         self.sync_all()
 
-    def sync_all(self, nodes=None, **kwargs):
+    def sync_blocks(self, nodes=None, **kwargs):
         sync_blocks(nodes or self.nodes, **kwargs)
+
+    def sync_mempools(self, nodes=None, **kwargs):
         sync_mempools(nodes or self.nodes, **kwargs)
 
+    def sync_all(self, nodes=None, **kwargs):
+        self.sync_blocks(nodes, **kwargs)
+        self.sync_mempools(nodes, **kwargs)
+
     # Private helper methods. These should not be accessed by the subclass test scripts.
 
     def _start_logging(self):
@@ -494,7 +500,7 @@ class BitcoinTestFramework(metaclass=BitcoinTestMetaClass):
             # see the tip age check in IsInitialBlockDownload().
             for i in range(8):
                 self.nodes[0].generatetoaddress(25 if i != 7 else 24, self.nodes[i % 4].get_deterministic_priv_key().address)
-            sync_blocks(self.nodes)
+            self.sync_blocks()
 
             for n in self.nodes:
                 assert_equal(n.getblockchaininfo()["blocks"], 199)