diff options
Diffstat (limited to 'test/functional/mempool_persist.py')
| -rwxr-xr-x | test/functional/mempool_persist.py | 50 |
1 files changed, 35 insertions, 15 deletions
diff --git a/test/functional/mempool_persist.py b/test/functional/mempool_persist.py index e0889fd5e9..149a01870d 100755 --- a/test/functional/mempool_persist.py +++ b/test/functional/mempool_persist.py @@ -28,21 +28,22 @@ Test is as follows: - Restart node0 with -persistmempool. Verify that it has 5 transactions in its mempool. This tests that -persistmempool=0 does not overwrite a previously valid mempool stored on disk. + - Remove node0 mempool.dat and verify savemempool RPC recreates it + and verify that node1 can load it and has 5 transaction in its + mempool. + - Verify that savemempool throws when the RPC is called if + node1 can't write to disk. """ +import os import time -from test_framework.mininode import wait_until from test_framework.test_framework import BitcoinTestFramework from test_framework.util import * class MempoolPersistTest(BitcoinTestFramework): - - def __init__(self): - super().__init__() - # We need 3 nodes for this test. Node1 does not have a persistent mempool. + def set_test_params(self): self.num_nodes = 3 - self.setup_clean_chain = False self.extra_args = [[], ["-persistmempool=0"], []] def run_test(self): @@ -64,27 +65,46 @@ class MempoolPersistTest(BitcoinTestFramework): self.log.debug("Stop-start node0 and node1. Verify that node0 has the transactions in its mempool and node1 does not.") self.stop_nodes() - self.nodes = [] - self.nodes.append(self.start_node(0, self.options.tmpdir)) - self.nodes.append(self.start_node(1, self.options.tmpdir)) + self.start_node(0) + self.start_node(1) # Give bitcoind a second to reload the mempool time.sleep(1) - assert wait_until(lambda: len(self.nodes[0].getrawmempool()) == 5) + wait_until(lambda: len(self.nodes[0].getrawmempool()) == 5) assert_equal(len(self.nodes[1].getrawmempool()), 0) self.log.debug("Stop-start node0 with -persistmempool=0. Verify that it doesn't load its mempool.dat file.") self.stop_nodes() - self.nodes = [] - self.nodes.append(self.start_node(0, self.options.tmpdir, ["-persistmempool=0"])) + self.start_node(0, extra_args=["-persistmempool=0"]) # Give bitcoind a second to reload the mempool time.sleep(1) assert_equal(len(self.nodes[0].getrawmempool()), 0) self.log.debug("Stop-start node0. Verify that it has the transactions in its mempool.") self.stop_nodes() - self.nodes = [] - self.nodes.append(self.start_node(0, self.options.tmpdir)) - assert wait_until(lambda: len(self.nodes[0].getrawmempool()) == 5) + self.start_node(0) + wait_until(lambda: len(self.nodes[0].getrawmempool()) == 5) + + mempooldat0 = os.path.join(self.options.tmpdir, 'node0', 'regtest', 'mempool.dat') + mempooldat1 = os.path.join(self.options.tmpdir, 'node1', 'regtest', 'mempool.dat') + self.log.debug("Remove the mempool.dat file. Verify that savemempool to disk via RPC re-creates it") + os.remove(mempooldat0) + self.nodes[0].savemempool() + assert os.path.isfile(mempooldat0) + + self.log.debug("Stop nodes, make node1 use mempool.dat from node0. Verify it has 5 transactions") + os.rename(mempooldat0, mempooldat1) + self.stop_nodes() + self.start_node(1, extra_args=[]) + wait_until(lambda: len(self.nodes[1].getrawmempool()) == 5) + + self.log.debug("Prevent bitcoind from writing mempool.dat to disk. Verify that `savemempool` fails") + # to test the exception we are setting bad permissions on a tmp file called mempool.dat.new + # which is an implementation detail that could change and break this test + mempooldotnew1 = mempooldat1 + '.new' + with os.fdopen(os.open(mempooldotnew1, os.O_CREAT, 0o000), 'w'): + pass + assert_raises_jsonrpc(-1, "Unable to dump mempool to disk", self.nodes[1].savemempool) + os.remove(mempooldotnew1) if __name__ == '__main__': MempoolPersistTest().main() |