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 --- Changes in v3: - Maintain the old '#include' way - Link to v2: https://lore.kernel.org/r/20240108-kunit-doc-export-v2-1-8f2dd3395fed@riseup...

Changes in v2: - Fix #if condition - Link to v1: https://lore.kernel.org/r/20240108-kunit-doc-export-v1-1-119368df0d96@riseup... --- Documentation/dev-tools/kunit/usage.rst | 19 +++++++++++++++++-- 1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/Documentation/dev-tools/kunit/usage.rst b/Documentation/dev-tools/kunit/usage.rst index c27e1646ecd9..8e35b94a17ec 100644 --- a/Documentation/dev-tools/kunit/usage.rst +++ b/Documentation/dev-tools/kunit/usage.rst @@ -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

--- base-commit: eeb8e8d9f124f279e80ae679f4ba6e822ce4f95f change-id: 20240108-kunit-doc-export-eec1f910ab67

Best regards,