diff --git a/test/functional/feature_b4os.py b/test/functional/feature_b4os.py
new file mode 100755
index 0000000000..ef0e137abf
--- /dev/null
+++ b/test/functional/feature_b4os.py
@@ -0,0 +1,16 @@
+#!/usr/bin/env python3
+"""b4os functional test."""
+
+from test_framework.test_framework import BitcoinTestFramework
+
+
+class B4osTest(BitcoinTestFramework):
+      def set_test_params(self):
+          self.num_nodes = 1
+
+      def run_test(self):
+          self.log.info("b4os")
+
+
+if __name__ == '__main__':
+      B4osTest(__file__).main()
\ No newline at end of file
diff --git a/test/functional/feature_miniwallet.py b/test/functional/feature_miniwallet.py
new file mode 100644
index 0000000000..6cd0cb6546
--- /dev/null
+++ b/test/functional/feature_miniwallet.py
@@ -0,0 +1,29 @@
+#!/usr/bin/env python3
+"""Test MiniWallet as a test helper."""
+
+from test_framework.test_framework import BitcoinTestFramework
+from test_framework.util import assert_greater_than
+from test_framework.wallet import MiniWallet
+
+
+class MiniWalletTest(BitcoinTestFramework):
+    def set_test_params(self):
+        self.num_nodes = 1
+
+    def run_test(self):
+        wallet = MiniWallet(self.nodes[0])
+
+        assert_greater_than(wallet.get_balance(), 0)
+
+        tx = wallet.send_self_transfer(from_node=self.nodes[0])
+        txid = tx["txid"]
+
+        assert txid in self.nodes[0].getrawmempool()
+
+        self.generate(self.nodes[0], 1)
+
+        assert txid not in self.nodes[0].getrawmempool()
+
+
+if __name__ == '__main__':
+    MiniWalletTest(__file__).main()
diff --git a/test/functional/feature_prune_debug_log.py b/test/functional/feature_prune_debug_log.py
new file mode 100644
index 0000000000..61e85d88d5
--- /dev/null
+++ b/test/functional/feature_prune_debug_log.py
@@ -0,0 +1,29 @@
+#!/usr/bin/env python3
+"""Test prune mode debug log messages."""
+
+from test_framework.test_framework import BitcoinTestFramework
+from test_framework.util import assert_equal
+
+
+class PruneDebugLogTest(BitcoinTestFramework):
+    def set_test_params(self):
+        self.num_nodes = 1
+
+    def run_test(self):
+        self.log.info("Restart without prune - check no prune log message")
+        with self.nodes[0].assert_debug_log([], unexpected_msgs=["Prune configured to target"]):
+            self.restart_node(0, extra_args=[])
+
+        info = self.nodes[0].getblockchaininfo()
+        assert_equal(info["pruned"], False)
+
+        self.log.info("Restart with prune=550 - check prune log message")
+        with self.nodes[0].assert_debug_log(["Prune configured to target"]):
+            self.restart_node(0, extra_args=["-prune=550"])
+
+        info = self.nodes[0].getblockchaininfo()
+        assert_equal(info["pruned"], True)
+
+
+if __name__ == '__main__':
+    PruneDebugLogTest(__file__).main()
diff --git a/test/functional/p2p_invalid_submission.py b/test/functional/p2p_invalid_submission.py
new file mode 100755
index 0000000000..7752f86f5d
--- /dev/null
+++ b/test/functional/p2p_invalid_submission.py
@@ -0,0 +1,35 @@
+#!/usr/bin/env python3
+"""Test that an invalid transaction is rejected over P2P."""
+
+from test_framework.messages import CInv, MSG_TX, msg_getdata, msg_tx
+from test_framework.p2p import P2PInterface
+from test_framework.test_framework import BitcoinTestFramework
+from test_framework.wallet import MiniWallet
+
+
+class P2PInvalidSubmissionTest(BitcoinTestFramework):
+    def set_test_params(self):
+        self.num_nodes = 1
+
+    def run_test(self):
+        wallet = MiniWallet(self.nodes[0])
+        peer = self.nodes[0].add_p2p_connection(P2PInterface())
+
+        tx = wallet.create_self_transfer()["tx"]
+        tx.vin[0].prevout.n = 15
+
+        with self.nodes[0].assert_debug_log(["bad-txns"]):
+            peer.send_and_ping(msg_tx(tx))
+
+        assert tx.txid_hex not in self.nodes[0].getrawmempool()
+
+        getdata = msg_getdata()
+        getdata.inv.append(CInv(MSG_TX, tx.txid_int))
+        peer.send_without_ping(getdata)
+
+        peer.wait_until(lambda: "notfound" in peer.last_message)
+        self.log.info("Node correctly rejected invalid transaction")
+
+
+if __name__ == '__main__':
+    P2PInvalidSubmissionTest(__file__).main()
\ No newline at end of file
diff --git a/test/functional/p2p_ping_pong.py b/test/functional/p2p_ping_pong.py
new file mode 100755
index 0000000000..6e9fe540b1
--- /dev/null
+++ b/test/functional/p2p_ping_pong.py
@@ -0,0 +1,26 @@
+#!/usr/bin/env python3
+"""Test P2P ping/pong message exchange."""
+
+from test_framework.test_framework import BitcoinTestFramework
+from test_framework.p2p import P2PInterface
+from test_framework.messages import msg_ping
+
+
+class P2PPingPongTest(BitcoinTestFramework):
+    def set_test_params(self):
+        self.num_nodes = 1
+
+    def run_test(self):
+        peer = self.nodes[0].add_p2p_connection(P2PInterface())
+
+        nonce = 12345
+        peer.send_without_ping(msg_ping(nonce=nonce))
+
+        peer.wait_until(lambda: "pong" in peer.last_message and peer.last_message["pong"].nonce ==
+   nonce)
+
+        self.log.info("Pong received with matching nonce")
+
+
+if __name__ == '__main__':
+    P2PPingPongTest(__file__).main()
\ No newline at end of file
diff --git a/test/functional/test_runner.py b/test/functional/test_runner.py
index a4052f9102..b1adb6e386 100755
--- a/test/functional/test_runner.py
+++ b/test/functional/test_runner.py
@@ -379,8 +379,14 @@
     'tool_rpcauth.py',
     'p2p_handshake.py',
     'p2p_handshake.py --v2transport',
+    'p2p_invalid_submission.py',
     'feature_dirsymlinks.py',
+    'feature_b4os.py',
     'feature_help.py',
+    'feature_miniwallet.py',
+    'p2p_ping_pong.py',
+    'feature_prune_debug_log.py',
+    'wallet_rpc_basics.py',
     'feature_framework_startup_failures.py',
     'feature_shutdown.py',
     'wallet_migration.py',
diff --git a/test/functional/wallet_rpc_basics.py b/test/functional/wallet_rpc_basics.py
new file mode 100755
index 0000000000..8f17e1d71c
--- /dev/null
+++ b/test/functional/wallet_rpc_basics.py
@@ -0,0 +1,56 @@
+#!/usr/bin/env python3
+"""Basic wallet RPC flow test."""
+
+from decimal import Decimal
+
+from test_framework.test_framework import BitcoinTestFramework
+from test_framework.util import assert_equal, assert_greater_than
+
+
+class WalletRPCBasicsTest(BitcoinTestFramework):
+    def set_test_params(self):
+        self.num_nodes = 2
+        self.setup_clean_chain = True
+
+    def skip_test_if_missing_module(self):
+        self.skip_if_no_wallet()
+
+    def run_test(self):
+          
+        self.nodes[0].createwallet("node0_wallet")
+        node0_wallet = self.nodes[0].get_wallet_rpc("node0_wallet")
+
+        self.nodes[1].createwallet("node1_wallet")
+        node1_wallet = self.nodes[1].get_wallet_rpc("node1_wallet")
+
+         
+        addr0 = node0_wallet.getnewaddress()
+        self.generatetoaddress(self.nodes[0], 101, addr0)
+
+        assert_equal(node0_wallet.getbalance(), Decimal("50.00000000"))
+
+         
+        addr = node1_wallet.getnewaddress()
+        txid = node0_wallet.sendtoaddress(addr, 1)
+
+          
+        self.sync_mempools()
+        assert txid in self.nodes[0].getrawmempool()
+        assert txid in self.nodes[1].getrawmempool()
+
+         
+        assert_greater_than(Decimal("49"), node0_wallet.getbalance())
+
+         
+        self.generate(self.nodes[0], 1)
+
+
+        assert txid not in self.nodes[0].getrawmempool()
+        assert txid not in self.nodes[1].getrawmempool()
+
+         
+        assert_equal(node1_wallet.getbalance(), Decimal("1.00000000"))
+
+
+if __name__ == '__main__':
+    WalletRPCBasicsTest(__file__).main()
\ No newline at end of file