statistics on SQLite version 3.3.2:
34787 lines of code
14464 lines of comment
42% Ratio of comment to code
50405 Additional lines of code used for testing only
6678 Number of base test cases
202906 Number of test cases run on a full regression
1296 Number of assert() statements in the code
59% Percent of the code base devoted to testing
97.4% Percent of the code covered by test cases
其中测试覆盖用的工具是http://gcc.gnu.org/onlinedocs/gcc-3.0/gcc_8.html 相信不少人对这个还是比较感兴趣的。