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2021-06-23iio: Remove a cast in iio-test-format which is no longer requiredDavid Gow1-1/+1
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>
2021-03-11iio: Add basic unit test for iio_format_value()Lars-Peter Clausen3-0/+214
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>