Feature Request for expectations

[stefanpoeter]

Hi all,

imagine the following scenario:

FAKE_VOID_FUNC(__wrap_write, int, void*, ssize_t)

SOME_TEST_FUNC() {

    struct some_struct send = { ... };

    method_that_calls_write(args, that, create, a, object, like, send, on, the, stack);

    assert_mem_eq(&send, __wrap_write_fake.arg0_value, sizeof(send));

}

The method_that_calls_write create a object on the stack that look like send and writes its content. After the call to method_that_calls_write the created object on the stack is not accesible anymore, hence, I cannot check the written data.

Is there a feature planned to make expectation to a mock object and check these expectations later on?

[meekrosoft]

Hi Stefan,

I'm not sure I 100% understand what you need, but could it be solved with a custom return value delegate for write that captures what is passed? https://github.com/meekrosoft/fff#custom-return-value-delegate

There is an example test that shows how it is done: https://github.com/meekrosoft/fff/blob/4e7451acd15715c95b275ebab6e77d9eb5b9cd7b/test/test_cases.include#L215

Best, Mike

[stefanpoeter]

Hi Mike,

that could work, thanks, I'll try it later.

Greetings, Stefan

[stefanpoeter]

https://github.com/meekrosoft/fff#how-do-i-fake-a-function-that-returns-a-value-by-reference

Thats what I was looking for. Thanks for your help.