Merge #10072: Remove sources of unreliablility in extended functional tests

a4fd89f Make forknotify.py more robust (John Newbery)
1f3d78b Wait for connection to open in bip9-softforks.py (John Newbery)

Tree-SHA512: de7d0002ee62ad97059b6f6c89b11f6e9901e3b4164ef6906bcd61e4ca499c277d9034784755966e5baf599869fad611b0b18f5547a384ceb5b7db3cc5bbd132

test/functional/bip9-softforks.py

@@ -200,16 +200,14 @@ class BIP9SoftForksTest(ComparisonTestFramework):
         yield TestInstance([[block, False]])
 
         # Restart all
-        self.test.block_store.close()
+        self.test.clear_all_connections()
         stop_nodes(self.nodes)
-        shutil.rmtree(self.options.tmpdir)
+        shutil.rmtree(self.options.tmpdir + "/node0")
         self.setup_chain()
         self.setup_network()
-        self.test.block_store = BlockStore(self.options.tmpdir)
-        self.test.clear_all_connections()
         self.test.add_all_connections(self.nodes)
-        NetworkThread().start() # Start up network handling in another thread
-
+        NetworkThread().start()
+        self.test.test_nodes[0].wait_for_verack()
 
     def get_tests(self):
         for test in itertools.chain(

test/functional/forknotify.py

@@ -3,6 +3,8 @@
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 """Test the -alertnotify option."""
+import os
+import time
 
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import *
@@ -41,12 +43,19 @@ class ForkNotifyTest(BitcoinTestFramework):
         self.nodes[1].generate(1)
         self.sync_all()
 
+        # Give bitcoind 10 seconds to write the alert notification
+        timeout = 10.0
+        while timeout > 0:
+            if os.path.exists(self.alert_filename) and os.path.getsize(self.alert_filename):
+                break
+            time.sleep(0.1)
+            timeout -= 0.1
+        else:
+            assert False, "-alertnotify did not warn of up-version blocks"
+
         with open(self.alert_filename, 'r', encoding='utf8') as f:
             alert_text = f.read()
 
-        if len(alert_text) == 0:
-            raise AssertionError("-alertnotify did not warn of up-version blocks")
-
         # Mine more up-version blocks, should not get more alerts:
         self.nodes[1].generate(1)
         self.sync_all()