对共享库进行单元测试时，如何用模拟实现替换函数？
[英]How do I replace a function by a mock implementation when unit-testing a shared library?
问题描述
I am having the opposite problem that Can you compile a shared object to prefer local symbols even if it's being loaded by a program compiled with -rdynamic?
我遇到了相反的问题， 即使它是由使用 -rdynamic 编译的程序加载的，您能否编译共享对象以更喜欢本地符号？ is solving.正在解决。
Using the naming from the linked question, I have a dynamic library where baz calls bar , and I have a test binary exercising the library, which substitutes its own fake implementation of bar for test purposes.使用链接问题中的命名，我有一个动态库，其中baz调用bar ，并且我有一个测试二进制文件来运行该库，它代替自己的bar假实现来进行测试。 This works fine on Linux, because -rdynamic is used to link.这在 Linux 上运行良好，因为-rdynamic用于链接。
The source of the test is https://github.com/apache/qpid-dispatch/blob/b172f501028b36d786b4c83bcee1e195cd17fcf2/tests/timer_test.c .测试来源为https://github.com/apache/qpid-dispatch/blob/b172f501028b36d786b4c83bcee1e195cd17fcf2/tests/timer_test.c 。 The functions being mocked are, among others qd_server_timeout and qd_timer_now (that is the inlined one, see comments).被模拟的函数包括qd_server_timeout和qd_timer_now （这是内联的，见评论）。
I am at a loss how to achieve the same on macOS.我不知道如何在 macOS 上实现相同的目标。 What are the correct linker options there?那里正确的链接器选项是什么？
1 个解决方案
解决方案1
0 2019-10-23 09:15:46
For now, it is resolved by adding __attribute__((noinline)) to bar ( commit ), and linking with -Wl,-flat_namespace ( commit ).现在，它是解决通过添加__attribute__((noinline))至bar （ 提交），并与联-Wl,-flat_namespace （ 提交）。 The -export_dynamic was actually not needed.实际上不需要-export_dynamic 。
I am still looking for alternative solutions.我仍在寻找替代解决方案。
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