Wladimir J. van der Laan b6a71b80d2
Merge #19055: Add MuHash3072 implementation
9815332d5158d69a94abeaf465a2c07bd8e43359 test: Change MuHash Python implementation to match cpp version again (Fabian Jahr)
01297fb3ca57e4b8cbc5a89fc7c6367de33b0bc6 fuzz: Add MuHash consistency fuzz test (Fabian Jahr)
b111410914041b72961536c3e4037eba103a8085 test: Add MuHash3072 fuzz test (Fabian Jahr)
c1225273857f9fa2e2276396e3f8b3ea48306df3 bench: Add Muhash benchmarks (Fabian Jahr)
7b1242229d1fcc9277238a3aefb3431061c82bfa test: Add MuHash3072 unit tests (Fabian Jahr)
adc708c98dbf03b1735edc91f813a36580781a95 crypto: Add MuHash3072 implementation (Fabian Jahr)
0b4d290bf5b0a4d156c523431bf89aaa9ffe92e5 crypto: Add Num3072 implementation (Fabian Jahr)
589f958662a2dcaacdb9a66f1088c74828a39577 build: Check for 128 bit integer support (Fabian Jahr)

Pull request description:

  This is the first split of #18000 which implements the Muhash algorithm and uses it to calculate the UTXO set hash in `gettxoutsetinfo`.

ACKs for top commit:
  laanwj:
    Code review ACK 9815332d5158d69a94abeaf465a2c07bd8e43359

Tree-SHA512: 4bc090738f0e3d80b74bdd8122e24a8ce80121120fd37c7e4335a73e7ba4fcd7643f2a2d559e2eebf54b8e3a3bd5f12cfb27ba61ded135fda210a07a233eae45
2021-01-07 17:57:17 +01:00
..
2021-01-04 12:31:31 +08:00

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 has some built-in command-line arguments; for example, to run just the getarg_tests verbosely:

test_bitcoin --log_level=all --run_test=getarg_tests -- DEBUG_LOG_OUT

log_level controls the verbosity of the test framework, which logs when a test case is entered, for example. The DEBUG_LOG_OUT 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 gdbor lldb and start debugging, just like you would with any other program:

gdb src/test/test_bitcoin