1 files changed, 17 insertions, 1 deletions
diff --git a/test/functional/rpc_blockchain.py b/test/functional/rpc_blockchain.py
index 4be9616345..8f7d5114fa 100755
--- a/test/functional/rpc_blockchain.py
+++ b/test/functional/rpc_blockchain.py
@@ -26,9 +26,10 @@ import os
 import subprocess
 
 from test_framework.blocktools import (
+    MAX_FUTURE_BLOCK_TIME,
+    TIME_GENESIS_BLOCK,
     create_block,
     create_coinbase,
-    TIME_GENESIS_BLOCK,
 )
 from test_framework.messages import (
     CBlockHeader,
@@ -53,6 +54,7 @@ from test_framework.wallet import MiniWallet
 HEIGHT = 200  # blocks mined
 TIME_RANGE_STEP = 600  # ten-minute steps
 TIME_RANGE_MTP = TIME_GENESIS_BLOCK + (HEIGHT - 6) * TIME_RANGE_STEP
+TIME_RANGE_TIP = TIME_GENESIS_BLOCK + (HEIGHT - 1) * TIME_RANGE_STEP
 TIME_RANGE_END = TIME_GENESIS_BLOCK + HEIGHT * TIME_RANGE_STEP
 
 
@@ -65,6 +67,7 @@ class BlockchainTest(BitcoinTestFramework):
     def run_test(self):
         self.wallet = MiniWallet(self.nodes[0])
         self.mine_chain()
+        self._test_max_future_block_time()
         self.restart_node(0, extra_args=['-stopatheight=207', '-prune=1'])  # Set extra args with pruning after rescan is complete
 
         self._test_getblockchaininfo()
@@ -85,6 +88,19 @@ class BlockchainTest(BitcoinTestFramework):
             self.generate(self.wallet, 1)
         assert_equal(self.nodes[0].getblockchaininfo()['blocks'], HEIGHT)
 
+    def _test_max_future_block_time(self):
+        self.stop_node(0)
+        self.log.info("A block tip of more than MAX_FUTURE_BLOCK_TIME in the future raises an error")
+        self.nodes[0].assert_start_raises_init_error(
+            extra_args=[f"-mocktime={TIME_RANGE_TIP - MAX_FUTURE_BLOCK_TIME - 1}"],
+            expected_msg=": The block database contains a block which appears to be from the future."
+            " This may be due to your computer's date and time being set incorrectly."
+            f" Only rebuild the block database if you are sure that your computer's date and time are correct.{os.linesep}"
+            "Please restart with -reindex or -reindex-chainstate to recover.",
+        )
+        self.log.info("A block tip of MAX_FUTURE_BLOCK_TIME in the future is fine")
+        self.start_node(0, extra_args=[f"-mocktime={TIME_RANGE_TIP - MAX_FUTURE_BLOCK_TIME}"])
+
     def _test_getblockchaininfo(self):
         self.log.info("Test getblockchaininfo")