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[tests] Improve assert message when wait_until() fails

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This commit is contained in:
John Newbery 2017-12-13 14:39:44 -05:00
parent ebf053ac61
commit 265d7c44b1
1 changed files with 9 additions and 4 deletions
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13
test/functional/test_framework/util.py
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@ -8,6 +8,7 @@ from base64 import b64encode
from binascii import hexlify, unhexlify
from decimal import Decimal, ROUND_DOWN
import hashlib
import inspect
import json
import logging
import os
@ -204,9 +205,9 @@ def wait_until(predicate, *, attempts=float('inf'), timeout=float('inf'), lock=N
if attempts == float('inf') and timeout == float('inf'):
timeout = 60
attempt = 0
timeout += time.time()
time_end = time.time() + timeout
while attempt < attempts and time.time() < timeout:
while attempt < attempts and time.time() < time_end:
if lock:
with lock:
if predicate():
@ -218,8 +219,12 @@ def wait_until(predicate, *, attempts=float('inf'), timeout=float('inf'), lock=N
time.sleep(0.05)
# Print the cause of the timeout
assert_greater_than(attempts, attempt)
assert_greater_than(timeout, time.time())
predicate_source = inspect.getsourcelines(predicate)
logger.error("wait_until() failed. Predicate: {}".format(predicate_source))
if attempt >= attempts:
raise AssertionError("Predicate {} not true after {} attempts".format(predicate_source, attempts))
elif time.time() >= time_end:
raise AssertionError("Predicate {} not true after {} seconds".format(predicate_source, timeout))
raise RuntimeError('Unreachable')
# RPC/P2P connection constants and functions