| API Test |
| ===================== |
| The implementation of libc-project is unique because our public C header files |
| are generated using information from ground truth captured in TableGen files. |
| Unit tests only exercise the internal C++ implementations and don't ensure the |
| headers were generated by the build system and that the generated header files |
| contain the extpected declarations and definitions. A simple solution is to have |
| contributors write an integration test for each individual function as a C |
| program; however, this would place a large burden on contributors and duplicates |
| some effort from the unit tests. |
| |
| Instead we automate the generation of what we call as an API test. This API test |
| ensures that public facing symbols are visible, that the header files are |
| generated as expected, and that each libc function has the correct function |
| prototype as specified by the standards. The API test cmake rules are located in |
| ``test/src/CMakeLists.txt``. The source file for the API test is generated in |
| ``<build directory>/projects/libc/test/src/public_api_test.cpp`` |
