Cpputest简单使用指南

1 准备环境

操作系统 CentOS 8：

$ cat /etc/system-release
CentOS Linux release 8.0.1905 (Core)

从网站https://cpputest.github.io/下载cpputest-3.8.tar.gz

$ tar xvfz cpputest-3.8.tar.gz
$ cd cpputest-3.8
$ ./autogen.sh
$ ./configure
$ make

2 准备被测函数

$ cat code.cpp
int test_func ()
{
  return 1;
}

3 准备测试代码

$ cat a.cpp
#include "CppUTest/TestHarness.h"
#include "CppUTest/CommandLineTestRunner.h"
 
int test_func ();

TEST_GROUP(FirstTestGroup)
{
};
 
TEST(FirstTestGroup, FirstTest)
{
  int x = test_func();
  CHECK_EQUAL(1, x);
}

int main(int ac, char** av)
{
    return CommandLineTestRunner::RunAllTests(ac, av);
}

4 编译测试代码

$ g++ a.cpp code.cpp -lstdc++ -lCppUTest -I/home/louyang/cpputest/cpputest-3.8/include -L/home/louyang/cpputest/cpputest-3.8/lib

5 运行查看结果

$ ./a.out
.
OK (1 tests, 1 ran, 1 checks, 0 ignored, 0 filtered out, 0 ms)

$ ./a.out -r 3
Test run 1 of 3
.
OK (1 tests, 1 ran, 1 checks, 0 ignored, 0 filtered out, 0 ms)

Test run 2 of 3
.
OK (1 tests, 1 ran, 1 checks, 0 ignored, 0 filtered out, 0 ms)

Test run 3 of 3
.
OK (1 tests, 1 ran, 1 checks, 0 ignored, 0 filtered out, 0 ms)

看代码覆盖率的方法

$ g++ -fprofile-arcs -ftest-coverage a.cpp code.cpp -lstdc++ -lCppUTest -I/home/louyang/cpputest/cpputest-3.8/include -L/home/louyang/cpputest/cpputest-3.8/lib && ./a.out
.
OK (1 tests, 1 ran, 1 checks, 0 ignored, 0 filtered out, 0 ms)

查看代码覆盖率：

$ gcov code.cpp
File 'code.cpp'
Lines executed:100.00% of 2
Creating 'code.cpp.gcov'

查看代码及分支覆盖率：

$ gcov code.cpp -b
File 'code.cpp'
Lines executed:100.00% of 2
No branches
No calls
Creating 'code.cpp.gcov'

参考

https://www.sparkpost.com/blog/getting-started-cpputest/