关于CPPUTEST的那点事

最新推荐文章于 2024-11-06 01:21:01 发布

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最新推荐文章于 2024-11-06 01:21:01 发布

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本文链接：https://blog.youkuaiyun.com/ufhy2357fhd/article/details/84885069

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本文介绍如何在CPPUTEST项目中模拟系统API或已存在的函数。首先，通过设置编译参数避免多重定义的问题。其次，确保模拟文件比源代码先被编译。最后，演示了如何在模拟文件中重新定义源文件中的函数。

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1. How to stub the system API or existed functions in CPPUTEST project?

A. Firstly, you need to add "-Wl,--allow-multiple-definition" to CPPUTEST_CPPFLAGS to avoid multiple-definition's problem.

CPPUTEST_CPPFLAGS += -Wl,--allow-multiple-definition
Note: this parameter involved safe problem , it just use for stub.c file...

B. Secondly, compiling stub.c should earlier than src file.

SRC_DIRS = \
stubs\
src
You can try to stub the same name of functions in stub.c now.

Source file: src/hello.c

#include "hello.h"

int exe_cmd(const char* cmd)
{
....................
return system(cmd);
}

Stub file: stub/stub.c

#include "CppUTestExt/MockSupport_c.h"

int exe_cmd(const char* cmd)
{
do your expectation.....
}