Code Coverage === ###### tags: `III` `DevOps` `Testing` `CI/CD` ## Code Coverage It allows you to find the areas of a program which is not exercised by a set of test cases, then it allows you to create extra test cases to increase coverage. - [What is Code coverage?](https://www.guru99.com/code-coverage.html) --- ## gcovr * [gcovr](https://gcovr.com/en/stable/guide.html#getting-started) will manage the use of gcov to output code coverage report. * Add logic to let g++ generate output files (``*.gcno`` from `` -ftest-coverage`` and ``*.gcda`` from ``-fprofile-arcs``) that can be processed by the gcov command. * ``*.gcno`` files are generated after compilation. * ``*.gcda`` files are generated after execution. ### 待測 shared (dynamic) library source code 要被編譯成``.o``時，要加 ``` GITLAB_GCOV_LDFLAGS += -fprofile-arcs -ftest-coverage -O0 -fPIC ``` ``.o``要連結成``.so``時，要加 ``` GITLAB_GCOV_FLAGS += -fprofile-arcs -O0 -fPIC -shared ``` --- ## Useful Commands 列出執行檔相依的動態函式庫 ``` $ ldd unit-test/authTest/authTest.exe ``` 搜索某檔名的路徑 ``` $ find . -name 'libauth.so' ``` 搜索含有某內容的檔案路徑 ``` $ grep -rnw '\-lauth' . ``` 展開 Makefile ``` $ make -nprR -C ulibs/auth | less # makefile (from 'Makefile', line 7) LIB_NAME = libauth.so ```