CException to try catch invalid memory access.

[Felipe Moura Oliveira]

Hello all,

I'm new to unit tests and using Unity. 

I could apply unity with ceedling with my embedded project without some problems, just process properly asserts give me work.

I used - http://www.electronvector.com/blog/unit-testing-with-asserts - tutorial to test my assert implementations.

Now I'm trying to detect if any function does no have "assert" and needs it. It is possible using CException?

For example:

But seems that the "Try" statement can't "bypass" this kind of fault.

This is a limitation of CException or I'm doing something wrong?

My out:

Tnx very much.

[Joe Trainor]

Hello,

Did you add the following to top of your source code to redirect the assert so it uses Cexception of the system assert?

#ifdef TEST

#undef assert

#include "CException.h"

#define assert(condition) if (!(condition)) Throw(0)

#endif

Then your source code can look like this:

#include <assert.h>

#ifdef TEST

#undef assert

#include "CException.h"

#define assert(condition) if (!(condition)) Throw(0)

#endif

void foo(struct mystruct_t* mystruct) {

    // Assert when a null pointer is detected.

    assert(NULL != mystruct);

    

    // Do something with the struct.

    mystruct->a = 1;

    mystruct->b = 2;

}

Attached is helper include file for writing tests.  It makes it easier to test for asserts.  Add '#include "assert_unit_test_support.h"' to top of your test source file.  I usually place the helper include file in the support folder.  Then your test code can look like this:

#include "unity.c"

#inlcude "assert_unit_test_support.h"

#include "../inc/test.h"

void setUp(void)

{

    // your setup code

}

void tearDown(void)

{

    // your tear down code

}

void test_foo_asserts_on_null_struct(void)

{

    // code should assert for NULL pointers

    struct mystruct_t * null_struct = NULL;

    TEST_ASSERT_FAIL_ASSERT(foo(null_struct));

    

    // code should not assert for non-NULL pointers

    struct mystruct_t valid_struct;

    TEST_ASSERT_PASS_ASSERT(foo(&valid_struct));

}

Hope this helps.