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iio: Add basic unit test for iio_format_value() 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>
2020-12-15 12:17:43 -07:00
# SPDX-License-Identifier: GPL-2.0-only
#
# Industrial I/O subsystem unit tests configuration
#
# Keep in alphabetical order
iio: test: test gain-time-scale helpers Some light sensors can adjust both the HW-gain and integration time. There are cases where adjusting the integration time has similar impact to the scale of the reported values as gain setting has. IIO users do typically expect to handle scale by a single writable 'scale' entry. Driver should then adjust the gain/time accordingly. It however is difficult for a driver to know whether it should change gain or integration time to meet the requested scale. Usually it is preferred to have longer integration time which usually improves accuracy, but there may be use-cases where long measurement times can be an issue. Thus it can be preferable to allow also changing the integration time - but mitigate the scale impact by also changing the gain underneath. Eg, if integration time change doubles the measured values, the driver can reduce the HW-gain to half. The theory of the computations of gain-time-scale is simple. However, some people (undersigned) got that implemented wrong for more than once. Hence some gain-time-scale helpers were introduced. Add some simple tests to verify the most hairy functions. Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com> Link: https://lore.kernel.org/r/0f7505b43f91394dc3bb636369489c897b7e01a7.1705328293.git.mazziesaccount@gmail.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-01-15 07:26:07 -07:00
config IIO_GTS_KUNIT_TEST
tristate "Test IIO formatting functions" if !KUNIT_ALL_TESTS
depends on KUNIT
select IIO_GTS_HELPER
select TEST_KUNIT_DEVICE_HELPERS
default KUNIT_ALL_TESTS
help
build unit tests for the IIO light sensor gain-time-scale helpers.
For more information on KUnit and unit tests in general, please refer
to the KUnit documentation in Documentation/dev-tools/kunit/.
If unsure, say N. Keep in alphabetical order
iio: test: add basic tests for the iio-rescale driver 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>
2022-02-12 19:57:35 -07:00
config IIO_RESCALE_KUNIT_TEST
iio: test: rework Kconfig to support modules Rework the IIO test Kconfig to support building KUnit tests as modules. This lets users execute tests at runtime in addition to the usual tools/testing/kunit/kunit.py script. Signed-off-by: Liam Beguin <liambeguin@gmail.com> Link: https://lore.kernel.org/r/20220710013109.3349104-6-liambeguin@gmail.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-07-09 18:31:09 -07:00
tristate "Test IIO rescale conversion functions" if !KUNIT_ALL_TESTS
depends on KUNIT && IIO_RESCALE
iio: test: add basic tests for the iio-rescale driver 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>
2022-02-12 19:57:35 -07:00
default KUNIT_ALL_TESTS
help
iio: test: rework Kconfig to support modules Rework the IIO test Kconfig to support building KUnit tests as modules. This lets users execute tests at runtime in addition to the usual tools/testing/kunit/kunit.py script. Signed-off-by: Liam Beguin <liambeguin@gmail.com> Link: https://lore.kernel.org/r/20220710013109.3349104-6-liambeguin@gmail.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-07-09 18:31:09 -07:00
Build unit tests for the iio-rescale code.
iio: test: add basic tests for the iio-rescale driver 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>
2022-02-12 19:57:35 -07:00
iio: test: rework Kconfig to support modules Rework the IIO test Kconfig to support building KUnit tests as modules. This lets users execute tests at runtime in addition to the usual tools/testing/kunit/kunit.py script. Signed-off-by: Liam Beguin <liambeguin@gmail.com> Link: https://lore.kernel.org/r/20220710013109.3349104-6-liambeguin@gmail.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-07-09 18:31:09 -07:00
For more information on KUnit and unit tests in general, please refer
to the KUnit documentation in Documentation/dev-tools/kunit/.
If unsure, say N.
iio: test: add basic tests for the iio-rescale driver 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>
2022-02-12 19:57:35 -07:00
iio: test: format: follow CONFIG_ naming convention The KUnit documentation indicates that all KUnit Kconfig entries must match CONFIG_<name>_KUNIT_TEST: where <name> is the name of the test suite. Rename the IIO_TEST_FORMAT configuration accordingly. Signed-off-by: Liam Beguin <liambeguin@gmail.com> Link: https://lore.kernel.org/r/20220710013109.3349104-4-liambeguin@gmail.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-07-09 18:31:07 -07:00
config IIO_FORMAT_KUNIT_TEST
iio: test: rework Kconfig to support modules Rework the IIO test Kconfig to support building KUnit tests as modules. This lets users execute tests at runtime in addition to the usual tools/testing/kunit/kunit.py script. Signed-off-by: Liam Beguin <liambeguin@gmail.com> Link: https://lore.kernel.org/r/20220710013109.3349104-6-liambeguin@gmail.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-07-09 18:31:09 -07:00
tristate "Test IIO formatting functions" if !KUNIT_ALL_TESTS
depends on KUNIT
default KUNIT_ALL_TESTS
help
build unit tests for the IIO formatting functions.
For more information on KUnit and unit tests in general, please refer
to the KUnit documentation in Documentation/dev-tools/kunit/.
If unsure, say N.
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