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Subject[PATCH 00/14] Add Kconfig unit tests
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I am applying various patches to Kconfig these days.

However, I fear regressions. I have been thinking of unit-tests.

There are various cryptic parts in Kconfig and corner cases where
it is difficult to notice breakage. If unit-tests cover those,
I will be able to apply changes more confidently.

So, here is the trial.

After fixing some problems, I will add a basic test framework.
This is based on pytest. Also, this is written in Python 3.
Python 2 will return in 2020. So, I believe new python tools should be
written in Python 3.

This is my Python 3 and pytest versions.

$ python3 --version
Python 3.5.2
$ python3 -m pytest --version
This is pytest version 3.4.0, imported from /home/masahiro/.local/lib/python3.5/site-packages/pytest.py

If I use old pytest version, some parts did not work as expected.
If this does not work for you, please consider using newer pytest.

I will brush up the code more and add more test cases to do a better job.
Before proceeding more, I'd like to get consensus for this approach.
If you have an idea for better implementation, comments are appreciated.

How to use?
-----------

Please make sure Python3 and pytest for Python3 is installed on your system.

Then, run "make testconfig"

The result looks like as follows:

masahiro@grover:~/workspace/linux-yamada$ make testconfig
HOSTCC scripts/kconfig/conf.o
HOSTCC scripts/kconfig/zconf.tab.o
HOSTLD scripts/kconfig/conf
python3 -B -m pytest ./scripts/kconfig/tests \
-o cache_dir=/home/masahiro/workspace/linux-yamada/scripts/kconfig/tests/.cache \

==================================================== test session starts =====================================================
platform linux -- Python 3.5.2, pytest-3.3.2, py-1.5.2, pluggy-0.6.0 -- /usr/bin/python3
cachedir: scripts/kconfig/tests/.cache
rootdir: /home/masahiro/workspace/linux-yamada/scripts/kconfig/tests, inifile: pytest.ini
collected 12 items

scripts/kconfig/tests/auto_submenu_creation/__init__.py::test PASSED [ 8%]
scripts/kconfig/tests/choice/__init__.py::test_oldask0 PASSED [ 16%]
scripts/kconfig/tests/choice/__init__.py::test_oldask1 PASSED [ 25%]
scripts/kconfig/tests/choice/__init__.py::test_allyes PASSED [ 33%]
scripts/kconfig/tests/choice/__init__.py::test_allmod PASSED [ 41%]
scripts/kconfig/tests/choice/__init__.py::test_allno PASSED [ 50%]
scripts/kconfig/tests/choice/__init__.py::test_alldef PASSED [ 58%]
scripts/kconfig/tests/choice_value_with_m_dep/__init__.py::test PASSED [ 66%]
scripts/kconfig/tests/err_recursive_inc/__init__.py::test PASSED [ 75%]
scripts/kconfig/tests/new_choice_with_dep/__init__.py::test PASSED [ 83%]
scripts/kconfig/tests/no_write_if_dep_unmet/__init__.py::test PASSED [ 91%]
scripts/kconfig/tests/warn_recursive_dep/__init__.py::test PASSED [100%]

================================================= 12 passed in 0.08 seconds ==================================================



Masahiro Yamada (14):
kconfig: send error messages to stderr
kconfig: do not write choice values when their dependency becomes n
kconfig: show '?' prompt even if no help text is available
kconfig: print additional new line for choice for redirection
kconfig: remove 'config*' pattern from .gitignnore
kbuild: define PYTHON2 and PYTHON3 variables instead of PYTHON
kconfig: test: add framework for Kconfig unit-tests
kconfig: test: add basic 'choice' tests
kconfig: test: test automatic submenu creation
kconfig: test: check if new symbols in choice are asked
kconfig: test: check .config sanity for choice values with unmet dep
kconfig: test: check visibility of tristate choice values in y choice
kconfig: test: check if recursive dependencies are detected
kconfig: test: check if recursive inclusion is detected

Makefile | 5 +-
arch/ia64/Makefile | 2 +-
scripts/kconfig/.gitignore | 1 -
scripts/kconfig/Makefile | 8 +
scripts/kconfig/conf.c | 29 +--
scripts/kconfig/symbol.c | 4 +-
.../kconfig/tests/auto_submenu_creation/Kconfig | 50 ++++
.../tests/auto_submenu_creation/__init__.py | 12 +
.../tests/auto_submenu_creation/expected_stdout | 10 +
scripts/kconfig/tests/choice/Kconfig | 54 +++++
scripts/kconfig/tests/choice/__init__.py | 37 +++
.../kconfig/tests/choice/alldef_expected_config | 5 +
.../kconfig/tests/choice/allmod_expected_config | 9 +
scripts/kconfig/tests/choice/allno_expected_config | 5 +
.../kconfig/tests/choice/allyes_expected_config | 9 +
.../kconfig/tests/choice/oldask0_expected_stdout | 10 +
scripts/kconfig/tests/choice/oldask1_config | 2 +
.../kconfig/tests/choice/oldask1_expected_stdout | 15 ++
.../kconfig/tests/choice_value_with_m_dep/Kconfig | 20 ++
.../tests/choice_value_with_m_dep/__init__.py | 15 ++
.../kconfig/tests/choice_value_with_m_dep/config | 2 +
.../tests/choice_value_with_m_dep/expected_config | 3 +
.../tests/choice_value_with_m_dep/expected_stdout | 4 +
scripts/kconfig/tests/conftest.py | 255 +++++++++++++++++++++
scripts/kconfig/tests/err_recursive_inc/Kconfig | 1 +
.../kconfig/tests/err_recursive_inc/Kconfig.inc | 1 +
.../kconfig/tests/err_recursive_inc/__init__.py | 10 +
.../tests/err_recursive_inc/expected_stderr | 4 +
scripts/kconfig/tests/new_choice_with_dep/Kconfig | 37 +++
.../kconfig/tests/new_choice_with_dep/__init__.py | 14 ++
scripts/kconfig/tests/new_choice_with_dep/config | 3 +
.../tests/new_choice_with_dep/expected_stdout | 10 +
.../kconfig/tests/no_write_if_dep_unmet/Kconfig | 14 ++
.../tests/no_write_if_dep_unmet/__init__.py | 17 ++
scripts/kconfig/tests/no_write_if_dep_unmet/config | 1 +
.../tests/no_write_if_dep_unmet/expected_config | 5 +
scripts/kconfig/tests/pytest.ini | 6 +
scripts/kconfig/tests/warn_recursive_dep/Kconfig | 62 +++++
.../kconfig/tests/warn_recursive_dep/__init__.py | 10 +
.../tests/warn_recursive_dep/expected_stderr | 33 +++
scripts/kconfig/zconf.l | 27 ++-
41 files changed, 789 insertions(+), 32 deletions(-)
create mode 100644 scripts/kconfig/tests/auto_submenu_creation/Kconfig
create mode 100644 scripts/kconfig/tests/auto_submenu_creation/__init__.py
create mode 100644 scripts/kconfig/tests/auto_submenu_creation/expected_stdout
create mode 100644 scripts/kconfig/tests/choice/Kconfig
create mode 100644 scripts/kconfig/tests/choice/__init__.py
create mode 100644 scripts/kconfig/tests/choice/alldef_expected_config
create mode 100644 scripts/kconfig/tests/choice/allmod_expected_config
create mode 100644 scripts/kconfig/tests/choice/allno_expected_config
create mode 100644 scripts/kconfig/tests/choice/allyes_expected_config
create mode 100644 scripts/kconfig/tests/choice/oldask0_expected_stdout
create mode 100644 scripts/kconfig/tests/choice/oldask1_config
create mode 100644 scripts/kconfig/tests/choice/oldask1_expected_stdout
create mode 100644 scripts/kconfig/tests/choice_value_with_m_dep/Kconfig
create mode 100644 scripts/kconfig/tests/choice_value_with_m_dep/__init__.py
create mode 100644 scripts/kconfig/tests/choice_value_with_m_dep/config
create mode 100644 scripts/kconfig/tests/choice_value_with_m_dep/expected_config
create mode 100644 scripts/kconfig/tests/choice_value_with_m_dep/expected_stdout
create mode 100644 scripts/kconfig/tests/conftest.py
create mode 100644 scripts/kconfig/tests/err_recursive_inc/Kconfig
create mode 100644 scripts/kconfig/tests/err_recursive_inc/Kconfig.inc
create mode 100644 scripts/kconfig/tests/err_recursive_inc/__init__.py
create mode 100644 scripts/kconfig/tests/err_recursive_inc/expected_stderr
create mode 100644 scripts/kconfig/tests/new_choice_with_dep/Kconfig
create mode 100644 scripts/kconfig/tests/new_choice_with_dep/__init__.py
create mode 100644 scripts/kconfig/tests/new_choice_with_dep/config
create mode 100644 scripts/kconfig/tests/new_choice_with_dep/expected_stdout
create mode 100644 scripts/kconfig/tests/no_write_if_dep_unmet/Kconfig
create mode 100644 scripts/kconfig/tests/no_write_if_dep_unmet/__init__.py
create mode 100644 scripts/kconfig/tests/no_write_if_dep_unmet/config
create mode 100644 scripts/kconfig/tests/no_write_if_dep_unmet/expected_config
create mode 100644 scripts/kconfig/tests/pytest.ini
create mode 100644 scripts/kconfig/tests/warn_recursive_dep/Kconfig
create mode 100644 scripts/kconfig/tests/warn_recursive_dep/__init__.py
create mode 100644 scripts/kconfig/tests/warn_recursive_dep/expected_stderr

--
2.7.4

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