Simultaneously opening the file in read and write mode would
lead to opening of an empty file instead of perturbing the existing
file.
Also, revert to the previous state after each perturbation so that
each perturbation is applied in isolation.
The thread does not only load blocks, it loads the mempool and,
in a future commit, will start the indexes as well.
Also, renamed the 'ThreadImport' function to 'ImportBlocks'
And the 'm_load_block' class member to 'm_thread_load'.
-BEGIN VERIFY SCRIPT-
sed -i "s/ThreadImport/ImportBlocks/g" $(git grep -l ThreadImport -- ':!/doc/')
sed -i "s/loadblk/initload/g" $(git grep -l loadblk -- ':!/doc/release-notes/')
sed -i "s/m_load_block/m_thread_load/g" $(git grep -l m_load_block)
-END VERIFY SCRIPT-
c371cae07a test, init: perturb file to ensure failure instead of only deleting them (brunoerg)
Pull request description:
In `feature_init.py` there is a TODO about perturbing the files instead of only testing by deleting them.
```py
# TODO: at some point, we should test perturbing the files instead of removing
# them, e.g.
#
# contents = target_file.read_bytes()
# tweaked_contents = bytearray(contents)
# tweaked_contents[50:250] = b'1' * 200
# target_file.write_bytes(bytes(tweaked_contents))
#
# At the moment I can't get this to work (bitcoind loads successfully?) so
# investigate doing this later.
```
This PR adds it by writing into the file random bytes and checking whether it throws an error when starting.
ACKs for top commit:
MarcoFalke:
lgtm ACK c371cae07a
Tree-SHA512: d691eee60b91dd9d1b200588608f56b0a10dccd9761a75254b69e0ba5e5866cae14d2f90cb2bd7ec0f95b0617c2562cd33f20892ffd16355b6df770d3806a0ff
Review note: The changes are complete, because self.options.descriptors
is set to None in parse_args (test_framework.py).
A value of None implies -disablewallet, see the previous commit.
So if a call to add_wallet_options is missing, it will lead to a test
failure when the wallet is compiled in.
Add functionality for activating a snapshot-based chainstate if one is
detected on-disk.
Also cautiously initialize chainstate cache usages so that we don't
somehow blow past our cache allowances during initialization, then
rebalance at the end of init.
Co-authored-by: Russell Yanofsky <russ@yanofsky.org>
This is needed for the next commit.
Also, it doesn't really test anything novel. wait_for_debug_log is
inherently racy, so will randomly terminate at the exact point or later.
So the randomization is already sufficiently covered by the existing
test.
This test sporadically fails due to the Python test missing log lines
for reasons that are poorly understood. The problem is made worse by the
fact that this test does not retain the log files from iteration to
iteration.
Change the test to do logline detection in a more robust manner (by
using `re.search` on the whole log content) in a way that is comparable
to the existing `assert_debug_log` utility, and retain all debug.log
content from case to case.
This part of the test sporadically fails on CI infrastructure. Instead
of perturbing a single .ldb file of each type, move all .ldb files of a
given type to ensure a bad startup.
