[tests] Move stop_node and start_node methods to BitcoinTestFramework

This commit moves functions start_node, start_nodes, stop_node and
stop_nodes functions into the BitcoinTestFramework class. It also moves
the bitcoind_processes dict and coverage variables into BitcoinTestFramework.

1 files changed, 2 insertions, 4 deletions

diff --git a/test/functional/wallet-encryption.py b/test/functional/wallet-encryption.py
index 33872e3c94..ba72918fe1 100755
--- a/test/functional/wallet-encryption.py
+++ b/test/functional/wallet-encryption.py
@@ -6,12 +6,10 @@
 
 import time
 
-from test_framework.test_framework import BitcoinTestFramework
+from test_framework.test_framework import BitcoinTestFramework, BITCOIND_PROC_WAIT_TIMEOUT
 from test_framework.util import (
     assert_equal,
     assert_raises_jsonrpc,
-    bitcoind_processes,
-    BITCOIND_PROC_WAIT_TIMEOUT,
 )
 
 class WalletEncryptionTest(BitcoinTestFramework):
@@ -33,7 +31,7 @@ class WalletEncryptionTest(BitcoinTestFramework):
 
         # Encrypt the wallet
         self.nodes[0].encryptwallet(passphrase)
-        bitcoind_processes[0].wait(timeout=BITCOIND_PROC_WAIT_TIMEOUT)
+        self.bitcoind_processes[0].wait(timeout=BITCOIND_PROC_WAIT_TIMEOUT)
         self.nodes[0] = self.start_node(0, self.options.tmpdir)
 
         # Test that the wallet is encrypted