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The iio-rescale driver supports various combinations of scale types and
offsets. These can often result in large integer multiplications. Make
sure these calculations are done right by adding a set of kunit test
cases that build on top of iio-test-format.
To run these tests, add the following to .kunitconfig
$ cat .kunitconfig
CONFIG_IIO=y
CONFIG_IIO_RESCALE_KUNIT_TEST=y
CONFIG_KUNIT=y
Then run:
$ ./tools/testing/kunit/kunit.py run --kunitconfig .kunitconfig
Signed-off-by: Liam Beguin <liambeguin@gmail.com>
Reviewed-by: Peter Rosin <peda@axentia.se>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20220213025739.2561834-7-liambeguin@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Add test for newly introduced type IIO_VAL_INT_64.
Signed-off-by: Andriy Tryshnivskyy <andriy.tryshnivskyy@opensynergy.com>
Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20211105100501.1904-3-andriy.tryshnivskyy@opensynergy.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Add KUNIT_ASSERT_NOT_ERR_OR_NULL(test, buf) for every test.
Also use ARRAY_SIZE(values) where it is possible.
Signed-off-by: Andriy Tryshnivskyy <andriy.tryshnivskyy@opensynergy.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20211105100501.1904-2-andriy.tryshnivskyy@opensynergy.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
The structleak plugin causes the stack frame size to grow immensely when
used with KUnit:
../drivers/iio/test/iio-test-format.c: In function ‘iio_test_iio_format_value_fixedpoint’:
../drivers/iio/test/iio-test-format.c:98:1: warning: the frame size of 2336 bytes is larger than 2048 bytes [-Wframe-larger-than=]
Turn it off in this file.
Signed-off-by: Brendan Higgins <brendanhiggins@google.com>
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
KUnit's EXPECT macros no longer typecheck as stringently, so casting the
result of strcmp() is now unnecessary.
Signed-off-by: David Gow <davidgow@google.com>
Reviewed-by: Brendan Higgins <brendanhiggins@google.com>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
The IIO core provides a function to do formatting of fixedpoint numbers.
In the past there have been some issues with the implementation of the
function where for example negative numbers were not handled correctly.
Introduce a basic unit test based on kunit that tests the function and
ensures that the generated output matches the expected output.
This gives us some confidence that future modifications to the function
implementation will not break ABI compatibility.
To run the unit tests follow the kunit documentation and add
CONFIG_IIO=y
CONFIG_IIO_TEST_FORMAT=y
to the .kunitconfig and run
> ./tools/testing/kunit/kunit.py run
Configuring KUnit Kernel ...
Building KUnit Kernel ...
Starting KUnit Kernel ...
============================================================
======== [PASSED] iio-format ========
[PASSED] iio_test_iio_format_value_integer
[PASSED] iio_test_iio_format_value_fixedpoint
[PASSED] iio_test_iio_format_value_fractional
[PASSED] iio_test_iio_format_value_fractional_log2
[PASSED] iio_test_iio_format_value_multiple
============================================================
Testing complete. 21 tests run. 0 failed. 0 crashed.
Elapsed time: 8.242s total, 0.001s configuring, 3.865s building, 0.000s running
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Link: https://lore.kernel.org/r/20201215191743.2725-3-lars@metafoo.de
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
