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[qa] Wait for specific block announcement in p2p-compactblocks

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Change check_announcement_of_new_block() to wait specifically for the
announcement of the newly created block, instead of waiting for any
announcement at all. A difficult to reproduce failure in
check_announcement_of_new_block() that happened in a travis build
(https://travis-ci.org/bitcoin/bitcoin/jobs/175198367) might have happened
because an older announcement was mistaken for the expected one. The error
looked like:

  Assertion failed: Failed

  File ".../bitcoin/qa/rpc-tests/test_framework/test_framework.py", line 145, in main
    self.run_test()
  File ".../bitcoin/build/../qa/rpc-tests/p2p-compactblocks.py", line 787, in run_test
    self.test_sendcmpct(self.nodes[1], self.segwit_node, 2, old_node=self.old_node)
  File ".../bitcoin/build/../qa/rpc-tests/p2p-compactblocks.py", line 201, in test_sendcmpct
    check_announcement_of_new_block(node, test_node, lambda p: p.last_cmpctblock is None and p.last_inv is not None)
  File ".../bitcoin/build/../qa/rpc-tests/p2p-compactblocks.py", line 194, in check_announcement_of_new_block
    assert(predicate(peer))

This commit also changes the assertion failed message above to include more
detailed information for debug.
This commit is contained in:
Russell Yanofsky 2016-11-14 09:58:30 -05:00
parent 87ab49e4fe
commit dfa44d1b07
1 changed files with 6 additions and 3 deletions
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9
qa/rpc-tests/p2p-compactblocks.py
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@ -186,12 +186,15 @@ class CompactBlocksTest(BitcoinTestFramework):
def check_announcement_of_new_block(node, peer, predicate):
peer.clear_block_announcement()
node.generate(1)
got_message = wait_until(lambda: peer.block_announced, timeout=30)
block_hash = int(node.generate(1)[0], 16)
peer.wait_for_block_announcement(block_hash, timeout=30)
assert(peer.block_announced)
assert(got_message)
with mininode_lock:
assert(predicate(peer))
assert predicate(peer), (
"block_hash={!r}, cmpctblock={!r}, inv={!r}".format(
block_hash, peer.last_cmpctblock, peer.last_inv))
# We shouldn't get any block announcements via cmpctblock yet.
check_announcement_of_new_block(node, test_node, lambda p: p.last_cmpctblock is None)