16d78bd Add valid invert of invalid every numeric opcode tests (Peter Todd) 2b62e17 Clearly separate PUSHDATA and numeric argument MINIMALDATA tests (Peter Todd) dfeec18 Test every numeric-accepting opcode for correct handling of the numeric minimal encoding rule (Peter Todd) 554147a Ensure MINIMALDATA invalid tests can only fail one way (Peter Todd) 6004e77 Improve CScriptNum() comment (Peter Todd) 698c6ab Add SCRIPT_VERIFY_MINIMALDATA (BIP62 rules 3 and 4) (Pieter Wuille) d752ba8 Add SCRIPT_VERIFY_SIGPUSHONLY (BIP62 rule 2) (Pieter Wuille)
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/.