
a8d0407 Move recentRejects initialization to top of InitBlockIndex (Wladimir J. van der Laan) 0847d9c Keep track of recently rejected transactions (Peter Todd) d741371 Only use randomly created nonces in CRollingBloomFilter. (Pieter Wuille) d2d7ee0 Make CRollingBloomFilter set nTweak for you (Peter Todd) a3d65fe Reuse vector hashing code for uint256 (Pieter Wuille) bbe4108 Add uint256 support to CRollingBloomFilter (Peter Todd)
Notes
The sources in this directory are unit test cases. Boost includes a unit testing framework, and since bitcoin 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 setup to compile an executable called "test_bitcoin" that runs all of the unit tests. The main source file is called test_bitcoin.cpp, which simply includes other files that contain the actual unit tests (outside of a couple required preprocessor directives). 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 examples of this pattern, examine uint160_tests.cpp and uint256_tests.cpp.
For further reading, I found the following website to be helpful in explaining how the boost unit test framework works: http://www.alittlemadness.com/2009/03/31/c-unit-testing-with-boosttest/.
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
... or to run just the doubledash test:
test_bitcoin --run_test=getarg_tests/doubledash
Run test_bitcoin --help for the full list.