[PATCH v4 0/2] scanf: convert self-test to KUnit

[Tamir Duberstein <tamird@gmail.com>]

This is one of just 3 remaining "Test Module" kselftests (the others
being bitmap and printf), the rest having been converted to KUnit. In
addition to the enclosed patch, please consider this an RFC on the
removal of the "Test Module" kselftest machinery.

I tested this using:

$ tools/testing/kunit/kunit.py run --arch arm64 --make_options LLVM=1 scanf

Signed-off-by: Tamir Duberstein <tamird@gmail.com>
---
Changes in v4:
- Bake `test` into various macros, greatly reducing diff noise.
- Revert control flow changes.
- Link to v3: https://lore.kernel.org/r/20250204-scanf-kunit-convert-v3-0-386d7c3ee714@gmail.com

Changes in v3:
- Reduce diff noise in lib/Makefile. (Petr Mladek)
- Split `scanf_test` into a few test cases. New output:
  : =================== scanf (10 subtests) ====================
  : [PASSED] numbers_simple
  : ====================== numbers_list  =======================
  : [PASSED] delim=" "
  : [PASSED] delim=":"
  : [PASSED] delim=","
  : [PASSED] delim="-"
  : [PASSED] delim="/"
  : ================== [PASSED] numbers_list ===================
  : ============ numbers_list_field_width_typemax  =============
  : [PASSED] delim=" "
  : [PASSED] delim=":"
  : [PASSED] delim=","
  : [PASSED] delim="-"
  : [PASSED] delim="/"
  : ======== [PASSED] numbers_list_field_width_typemax =========
  : =========== numbers_list_field_width_val_width  ============
  : [PASSED] delim=" "
  : [PASSED] delim=":"
  : [PASSED] delim=","
  : [PASSED] delim="-"
  : [PASSED] delim="/"
  : ======= [PASSED] numbers_list_field_width_val_width ========
  : [PASSED] numbers_slice
  : [PASSED] numbers_prefix_overflow
  : [PASSED] test_simple_strtoull
  : [PASSED] test_simple_strtoll
  : [PASSED] test_simple_strtoul
  : [PASSED] test_simple_strtol
  : ====================== [PASSED] scanf ======================
  : ============================================================
  : Testing complete. Ran 22 tests: passed: 22
  : Elapsed time: 5.517s total, 0.001s configuring, 5.440s building, 0.067s running
- Link to v2: https://lore.kernel.org/r/20250203-scanf-kunit-convert-v2-1-277a618d804e@gmail.com

Changes in v2:
- Rename lib/{test_scanf.c => scanf_kunit.c}. (Andy Shevchenko)
- Link to v1: https://lore.kernel.org/r/20250131-scanf-kunit-convert-v1-1-0976524f0eba@gmail.com

---
Tamir Duberstein (2):
      scanf: convert self-test to KUnit
      scanf: break kunit into test cases

 MAINTAINERS                          |   2 +-
 arch/m68k/configs/amiga_defconfig    |   1 -
 arch/m68k/configs/apollo_defconfig   |   1 -
 arch/m68k/configs/atari_defconfig    |   1 -
 arch/m68k/configs/bvme6000_defconfig |   1 -
 arch/m68k/configs/hp300_defconfig    |   1 -
 arch/m68k/configs/mac_defconfig      |   1 -
 arch/m68k/configs/multi_defconfig    |   1 -
 arch/m68k/configs/mvme147_defconfig  |   1 -
 arch/m68k/configs/mvme16x_defconfig  |   1 -
 arch/m68k/configs/q40_defconfig      |   1 -
 arch/m68k/configs/sun3_defconfig     |   1 -
 arch/m68k/configs/sun3x_defconfig    |   1 -
 arch/powerpc/configs/ppc64_defconfig |   1 -
 lib/Kconfig.debug                    |  20 ++-
 lib/Makefile                         |   2 +-
 lib/{test_scanf.c => scanf_kunit.c}  | 260 +++++++++++++++++------------------
 tools/testing/selftests/lib/Makefile |   2 +-
 tools/testing/selftests/lib/config   |   1 -
 tools/testing/selftests/lib/scanf.sh |   4 -
 20 files changed, 149 insertions(+), 155 deletions(-)
---
base-commit: a86bf2283d2c9769205407e2b54777c03d012939
change-id: 20250131-scanf-kunit-convert-f70dc33bb34c

Best regards,
-- 
Tamir Duberstein <tamird@gmail.com>