Wladimir J. van der Laan dcacea096e
Merge #19032: Serialization improvements: final step
71f016c6eb42e1ac2c905e04ba4d20c2009e533f Remove old serialization primitives (Pieter Wuille)
92beff15d3ae2646c00bd78146d7592a7097ce9c Convert LimitedString to formatter (Pieter Wuille)
ef17c03e074b6c3f185afa4eff572ba687c2a171 Convert wallet to new serialization (Pieter Wuille)
65c589e45e8b8914698a0fd25cd5aafdda30869c Convert Qt to new serialization (Pieter Wuille)

Pull request description:

  This is the final step 🥳 of the serialization improvements extracted from #10785.

  It converts the LimitedString wrapper to a new-style formatter, and updates the wallet and Qt code to use the new serialization framework. Finally all remaining old primitives are removed.

ACKs for top commit:
  jonatack:
    ACK 71f016c6eb42e1ac2 reviewed diff, builds/tests/re-fuzzed.
  laanwj:
    Code review ACK 71f016c6eb42e1ac2c905e04ba4d20c2009e533f

Tree-SHA512: d952194bc73259f6510bd4ab1348a1febbbf9862af30f905991812fb0e1f23f15948cdb3fc662be54d648e8f6d95b11060055d2e7a8c2cb5bf008224870b1ea1
2020-05-26 15:45:50 +02:00
..
2020-04-16 13:33:09 -04:00
2020-03-31 17:11:47 -04:00

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