f1941e8bfd
Reviewers: Note that CTxMemPool now requires a non-defaulted
CTxMemPool::Options for its constructor. Meaning that there's no need to
worry about a stray CTxMemPool constructor somewhere defaulting to
something incorrect. All instances of CTxMemPool construction are
addressed here in this commit.
We set options for CTxMemPool and construct it in many different ways. A
good example can be seen in how we determine CTxMemPool's check_ratio in
AppInitMain(...).
1. We first set the default based on chainparams's
DefaultConsistencyChecks()
2. Then, we apply the ArgsManager option on top of that default
3. Finally, we clamp the result of that between 0 and 1 Million
With this patch, most CTxMemPool construction are along the lines of:
MemPoolOptions mempool_opts{...default overrides...};
ApplyArgsManOptions(argsman, mempool_opts);
...hard overrides...
CTxMemPool pool{mempool_opts};
This "compositional" style of building options means that we can omit
unnecessary/irrelevant steps wherever we want but also maintain full
customizability.
For example:
- For users of libbitcoinkernel, where we eventually want to remove
ArgsManager, they simply won't call (or even know about)
ApplyArgsManOptions.
- See src/init.cpp to see how the check_ratio CTxMemPool option works
after this change.
A MemPoolOptionsForTest helper was also added and used by tests/fuzz
tests where a local CTxMemPool needed to be created.
The change in src/test/fuzz/tx_pool.cpp seemingly changes behaviour by
applying ArgsManager options on top of the CTxMemPool::Options defaults.
However, in future commits where we introduce flags like -maxmempool,
the call to ApplyArgsManOptions is actually what preserves the existing
behaviour. Previously, although it wasn't obvious, our CTxMemPool would
consult gArgs for flags like -maxmempool when it needed it, so it
already relied on ArgsManager information. This patchset just laid bare
the obfuscatory perils of globals.
[META] As this patchset progresses, we will move more and more
CTxMemPool-relevant options into MemPoolOptions and add their
ArgsMan-related logic to ApplyArgsManOptions.
|
||
|---|---|---|
| .. | ||
| data | ||
| fuzz | ||
| util | ||
| addrman_tests.cpp | ||
| allocator_tests.cpp | ||
| amount_tests.cpp | ||
| arith_uint256_tests.cpp | ||
| banman_tests.cpp | ||
| base32_tests.cpp | ||
| base58_tests.cpp | ||
| base64_tests.cpp | ||
| bech32_tests.cpp | ||
| bip32_tests.cpp | ||
| blockchain_tests.cpp | ||
| blockencodings_tests.cpp | ||
| blockfilter_index_tests.cpp | ||
| blockfilter_tests.cpp | ||
| bloom_tests.cpp | ||
| bswap_tests.cpp | ||
| checkqueue_tests.cpp | ||
| coins_tests.cpp | ||
| coinstatsindex_tests.cpp | ||
| compilerbug_tests.cpp | ||
| compress_tests.cpp | ||
| crypto_tests.cpp | ||
| cuckoocache_tests.cpp | ||
| dbwrapper_tests.cpp | ||
| denialofservice_tests.cpp | ||
| descriptor_tests.cpp | ||
| flatfile_tests.cpp | ||
| fs_tests.cpp | ||
| getarg_tests.cpp | ||
| hash_tests.cpp | ||
| httpserver_tests.cpp | ||
| i2p_tests.cpp | ||
| interfaces_tests.cpp | ||
| key_io_tests.cpp | ||
| key_tests.cpp | ||
| logging_tests.cpp | ||
| main.cpp | ||
| Makefile | ||
| mempool_tests.cpp | ||
| merkle_tests.cpp | ||
| merkleblock_tests.cpp | ||
| miner_tests.cpp | ||
| miniscript_tests.cpp | ||
| minisketch_tests.cpp | ||
| multisig_tests.cpp | ||
| net_peer_eviction_tests.cpp | ||
| net_tests.cpp | ||
| netbase_tests.cpp | ||
| orphanage_tests.cpp | ||
| pmt_tests.cpp | ||
| policy_fee_tests.cpp | ||
| policyestimator_tests.cpp | ||
| pow_tests.cpp | ||
| prevector_tests.cpp | ||
| raii_event_tests.cpp | ||
| random_tests.cpp | ||
| README.md | ||
| rest_tests.cpp | ||
| reverselock_tests.cpp | ||
| rpc_tests.cpp | ||
| sanity_tests.cpp | ||
| scheduler_tests.cpp | ||
| script_p2sh_tests.cpp | ||
| script_parse_tests.cpp | ||
| script_segwit_tests.cpp | ||
| script_standard_tests.cpp | ||
| script_tests.cpp | ||
| scriptnum10.h | ||
| scriptnum_tests.cpp | ||
| serfloat_tests.cpp | ||
| serialize_tests.cpp | ||
| settings_tests.cpp | ||
| sighash_tests.cpp | ||
| sigopcount_tests.cpp | ||
| skiplist_tests.cpp | ||
| sock_tests.cpp | ||
| streams_tests.cpp | ||
| sync_tests.cpp | ||
| system_tests.cpp | ||
| timedata_tests.cpp | ||
| torcontrol_tests.cpp | ||
| transaction_tests.cpp | ||
| txindex_tests.cpp | ||
| txpackage_tests.cpp | ||
| txrequest_tests.cpp | ||
| txvalidation_tests.cpp | ||
| txvalidationcache_tests.cpp | ||
| uint256_tests.cpp | ||
| util_tests.cpp | ||
| util_threadnames_tests.cpp | ||
| validation_block_tests.cpp | ||
| validation_chainstate_tests.cpp | ||
| validation_chainstatemanager_tests.cpp | ||
| validation_flush_tests.cpp | ||
| validation_tests.cpp | ||
| validationinterface_tests.cpp | ||
| versionbits_tests.cpp | ||
Unit tests
The sources in this directory are unit test cases. Boost includes a unit testing framework, and since Bitcoin Core already uses Boost, it makes sense to simply use this framework rather than require developers to configure some other framework (we want as few impediments to creating unit tests as possible).
The build system is set up to compile an executable called test_bitcoin
that runs all of the unit tests. The main source file for the test library is found in
util/setup_common.cpp.
Compiling/running unit tests
Unit tests will be automatically compiled if dependencies were met in ./configure
and tests weren't explicitly disabled.
After configuring, they can be run with make check.
To run the unit tests manually, launch src/test/test_bitcoin. To recompile
after a test file was modified, run make and then run the test again. If you
modify a non-test file, use make -C src/test to recompile only what's needed
to run the unit tests.
To add more unit tests, add BOOST_AUTO_TEST_CASE functions to the existing
.cpp files in the test/ directory or add new .cpp files that
implement new BOOST_AUTO_TEST_SUITE sections.
To run the GUI unit tests manually, launch src/qt/test/test_bitcoin-qt
To add more GUI unit tests, add them to the src/qt/test/ directory and
the src/qt/test/test_main.cpp file.
Running individual tests
test_bitcoin accepts the command line arguments from the boost framework.
For example, to run just the getarg_tests suite of tests:
test_bitcoin --log_level=all --run_test=getarg_tests
log_level controls the verbosity of the test framework, which logs when a
test case is entered, for example. test_bitcoin also accepts the command
line arguments accepted by bitcoind. Use -- to separate both types of
arguments:
test_bitcoin --log_level=all --run_test=getarg_tests -- -printtoconsole=1
The -printtoconsole=1 after the two dashes redirects the debug log, which
would normally go to a file in the test datadir
(BasicTestingSetup::m_path_root), to the standard terminal output.
... or to run just the doubledash test:
test_bitcoin --run_test=getarg_tests/doubledash
Run test_bitcoin --help for the full list.
Adding test cases
To add a new unit test file to our test suite you need
to add the file to src/Makefile.test.include. The pattern is to create
one test file for each class or source file for which you want to create
unit tests. The file naming convention is <source_filename>_tests.cpp
and such files should wrap their tests in a test suite
called <source_filename>_tests. For an example of this pattern,
see uint256_tests.cpp.
Logging and debugging in unit tests
make check will write to a log file foo_tests.cpp.log and display this file
on failure. For running individual tests verbosely, refer to the section
above.
To write to logs from unit tests you need to use specific message methods
provided by Boost. The simplest is BOOST_TEST_MESSAGE.
For debugging you can launch the test_bitcoin executable with gdb or lldb and
start debugging, just like you would with any other program:
gdb src/test/test_bitcoin
Segmentation faults
If you hit a segmentation fault during a test run, you can diagnose where the fault
is happening by running gdb ./src/test/test_bitcoin and then using the bt command
within gdb.
Another tool that can be used to resolve segmentation faults is valgrind.
If for whatever reason you want to produce a core dump file for this fault, you can do
that as well. By default, the boost test runner will intercept system errors and not
produce a core file. To bypass this, add --catch_system_errors=no to the
test_bitcoin arguments and ensure that your ulimits are set properly (e.g. ulimit -c unlimited).
Running the tests and hitting a segmentation fault should now produce a file called core
(on Linux platforms, the file name will likely depend on the contents of
/proc/sys/kernel/core_pattern).
You can then explore the core dump using
gdb src/test/test_bitcoin core
(gbd) bt # produce a backtrace for where a segfault occurred