This turned into just a set of notes about CTest and Boost.Test: CTest integrates well with CMake [1] and allows us to run executables that perform tests. Each test can be set as required (to be passed) or not. The result of each test is based on a rule that is defined in the each tests properties. For example, the integer return code from a process can be tested, or a regex match can be performed on stdout or stderr for the test process.
Simple tests that depend on the integer return code of a process can be done via CMake's execute_process by checking RESULT_VARIABLE. Using the process return code, both CTest and CMake can test python API changes by executing python scripts and checking python's return value. The Boost.Test framework provides easy methods for writing C++ test cases as executables. A single executable can contain as many tests as required. Each test is called individually as a command line argument. The Boost.Test framework can work by returning a different integer return code from the executable depending on the result of a test. It is has some additional features which aid automatic regression testing (for example on build servers and the like) [2] Writing test cases using the Boost.Test framework provides an easy way to test WorkerFunctions within the codebase as we can write test cases and link them to the classes we're testing. This really requires code to be more modular so that we can link test executables against libraries. CTest and Boost.Test can allow memory leak testing as CTest integrates well with Purify or Valgrind. CTest allows subsets of tests to be run, so if you know you've only been working on a certain part of the codebase, you can quickly run just the tests that should be affected by your changes before running the whole test suite. The Python API requires test cases for stability so we know that our changes to the C++ code do not break other peoples IP based on our Python API. [1] http://www.cmake.org/cmake/help/cmake_tutorial.html [2] http://www.boost.org/doc/libs/1_53_0/libs/test/doc/html/utf/usage-recommendations/command-line-specific.html Best Regards, Brian.
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