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Documentation: KUnit: Update the instructions on how to test static functions 

Now that we have the VISIBLE_IF_KUNIT and EXPORT_SYMBOL_IF_KUNIT macros,
update the instructions to recommend this way of testing static
functions.

Signed-off-by: Arthur Grillo <arthurgrillo@riseup.net>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
This commit is contained in:
Arthur Grillo 2024-01-10 14:39:28 -03:00 committed by Shuah Khan
parent a1af6a2bfa
commit 1a9f2c776d
1 changed files with 17 additions and 2 deletions
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19
Documentation/dev-tools/kunit/usage.rst
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@ -671,8 +671,23 @@ Testing Static Functions
------------------------
If we do not want to expose functions or variables for testing, one option is to
conditionally ``#include`` the test file at the end of your .c file. For
example:
conditionally export the used symbol. For example:
.. code-block:: c
/* In my_file.c */
VISIBLE_IF_KUNIT int do_interesting_thing();
EXPORT_SYMBOL_IF_KUNIT(do_interesting_thing);
/* In my_file.h */
#if IS_ENABLED(CONFIG_KUNIT)
int do_interesting_thing(void);
#endif
Alternatively, you could conditionally ``#include`` the test file at the end of
your .c file. For example:
.. code-block:: c