MarcoFalke ad0fc453cc
Merge bitcoin/bitcoin#16333: test: Set BIP34Height = 2 for regtest
222290f54388270937cb6c174195717e2214ec0d test: Set BIP34Height = 2 for regtest (MarcoFalke)
fac90c55be478f0323eafa1d560ea2c56f04fb23 test: Create all blocks with version 4 or higher (MarcoFalke)

Pull request description:

  BIP34 is active on the current tip of mainnet, so all miners must obey it. It would be nice if it also was active in fresh regtest instances from the earliest time possible.

  I changed the BIP34 height to `2`, so that the block at height=1 may be used to mine a duplicate coinbase. (Needed to test mainnet behaviour)

  This pull is done in two commits:

  *  test: Create all blocks with version 4 or higher:
     Now that BIP34 is activated earlier, we need to create blocks with a higher version number. Just bump it to 4 instead of 2 to avoid having to bump it again later.

  *  test: Set BIP34Height = 2 for regtest:
     This fixes the BIP34 implementation in the tests (to match the one of the Core codebase) and updates the tests where needed

ACKs for top commit:
  ajtowns:
    ACK 222290f54388270937cb6c174195717e2214ec0d
  jonatack:
    ACK 222290f54388270937cb6c174195717e2214ec0d tested and reviewed rebased to current master 5e213822f86d
  theStack:
    Tested ACK 222290f54388270937cb6c174195717e2214ec0d

Tree-SHA512: d69c637a62a64b8e87de8c7f0b305823d8f4d115c1852514b923625dbbcf9a4854b5bb3771ff41702ebf47c4c182a4442c6d7c0b9f282c95a34b83e56a73939b
2021-08-03 10:10:43 +02:00
..

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