diff options
Diffstat (limited to 'drivers/iio/test/iio-test-format.c')
| -rw-r--r-- | drivers/iio/test/iio-test-format.c | 271 |
1 files changed, 271 insertions, 0 deletions
diff --git a/drivers/iio/test/iio-test-format.c b/drivers/iio/test/iio-test-format.c new file mode 100644 index 000000000..fc67e6b73 --- /dev/null +++ b/drivers/iio/test/iio-test-format.c @@ -0,0 +1,271 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* Unit tests for IIO formatting functions + * + * Copyright (c) 2020 Lars-Peter Clausen <lars@metafoo.de> + */ + +#include <kunit/test.h> +#include <linux/iio/iio.h> + +#define IIO_TEST_FORMAT_EXPECT_EQ(_test, _buf, _ret, _val) do { \ + KUNIT_EXPECT_EQ(_test, strlen(_buf), _ret); \ + KUNIT_EXPECT_STREQ(_test, (_buf), (_val)); \ + } while (0) + +static void iio_test_iio_format_value_integer(struct kunit *test) +{ + char *buf; + int val; + int ret; + + buf = kunit_kmalloc(test, PAGE_SIZE, GFP_KERNEL); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, buf); + + val = 42; + ret = iio_format_value(buf, IIO_VAL_INT, 1, &val); + IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "42\n"); + + val = -23; + ret = iio_format_value(buf, IIO_VAL_INT, 1, &val); + IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-23\n"); + + val = 0; + ret = iio_format_value(buf, IIO_VAL_INT, 1, &val); + IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "0\n"); + + val = INT_MAX; + ret = iio_format_value(buf, IIO_VAL_INT, 1, &val); + IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "2147483647\n"); + + val = INT_MIN; + ret = iio_format_value(buf, IIO_VAL_INT, 1, &val); + IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-2147483648\n"); +} + +static void iio_test_iio_format_value_fixedpoint(struct kunit *test) +{ + int values[2]; + char *buf; + int ret; + + buf = kunit_kmalloc(test, PAGE_SIZE, GFP_KERNEL); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, buf); + + /* positive >= 1 */ + values[0] = 1; + values[1] = 10; + + ret = iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO, ARRAY_SIZE(values), values); + IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "1.000010\n"); + + ret = iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO_DB, ARRAY_SIZE(values), values); + IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "1.000010 dB\n"); + + ret = iio_format_value(buf, IIO_VAL_INT_PLUS_NANO, ARRAY_SIZE(values), values); + IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "1.000000010\n"); + + /* positive < 1 */ + values[0] = 0; + values[1] = 12; + + ret = iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO, ARRAY_SIZE(values), values); + IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "0.000012\n"); + + ret = iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO_DB, ARRAY_SIZE(values), values); + IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "0.000012 dB\n"); + + ret = iio_format_value(buf, IIO_VAL_INT_PLUS_NANO, ARRAY_SIZE(values), values); + IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "0.000000012\n"); + + /* negative <= -1 */ + values[0] = -1; + values[1] = 10; + + ret = iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO, ARRAY_SIZE(values), values); + IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-1.000010\n"); + + ret = iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO_DB, ARRAY_SIZE(values), values); + IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-1.000010 dB\n"); + + ret = iio_format_value(buf, IIO_VAL_INT_PLUS_NANO, ARRAY_SIZE(values), values); + IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-1.000000010\n"); + + /* negative > -1 */ + values[0] = 0; + values[1] = -123; + ret = iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO, ARRAY_SIZE(values), values); + IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-0.000123\n"); + + ret = iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO_DB, ARRAY_SIZE(values), values); + IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-0.000123 dB\n"); + + ret = iio_format_value(buf, IIO_VAL_INT_PLUS_NANO, ARRAY_SIZE(values), values); + IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-0.000000123\n"); +} + +static void iio_test_iio_format_value_fractional(struct kunit *test) +{ + int values[2]; + char *buf; + int ret; + + buf = kunit_kmalloc(test, PAGE_SIZE, GFP_KERNEL); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, buf); + + /* positive < 1 */ + values[0] = 1; + values[1] = 10; + ret = iio_format_value(buf, IIO_VAL_FRACTIONAL, ARRAY_SIZE(values), values); + IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "0.100000000\n"); + + /* positive >= 1 */ + values[0] = 100; + values[1] = 3; + ret = iio_format_value(buf, IIO_VAL_FRACTIONAL, ARRAY_SIZE(values), values); + IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "33.333333333\n"); + + /* negative > -1 */ + values[0] = -1; + values[1] = 1000000000; + ret = iio_format_value(buf, IIO_VAL_FRACTIONAL, ARRAY_SIZE(values), values); + IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-0.000000001\n"); + + /* negative <= -1 */ + values[0] = -200; + values[1] = 3; + ret = iio_format_value(buf, IIO_VAL_FRACTIONAL, ARRAY_SIZE(values), values); + IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-66.666666666\n"); + + /* Zero */ + values[0] = 0; + values[1] = -10; + ret = iio_format_value(buf, IIO_VAL_FRACTIONAL, ARRAY_SIZE(values), values); + IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "0.000000000\n"); +} + +static void iio_test_iio_format_value_fractional_log2(struct kunit *test) +{ + int values[2]; + char *buf; + int ret; + + buf = kunit_kmalloc(test, PAGE_SIZE, GFP_KERNEL); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, buf); + + /* positive < 1 */ + values[0] = 123; + values[1] = 10; + ret = iio_format_value(buf, IIO_VAL_FRACTIONAL_LOG2, ARRAY_SIZE(values), values); + IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "0.120117187\n"); + + /* positive >= 1 */ + values[0] = 1234567; + values[1] = 10; + ret = iio_format_value(buf, IIO_VAL_FRACTIONAL_LOG2, ARRAY_SIZE(values), values); + IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "1205.631835937\n"); + + /* negative > -1 */ + values[0] = -123; + values[1] = 10; + ret = iio_format_value(buf, IIO_VAL_FRACTIONAL_LOG2, ARRAY_SIZE(values), values); + IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-0.120117187\n"); + + /* negative <= -1 */ + values[0] = -1234567; + values[1] = 10; + ret = iio_format_value(buf, IIO_VAL_FRACTIONAL_LOG2, ARRAY_SIZE(values), values); + IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-1205.631835937\n"); + + /* Zero */ + values[0] = 0; + values[1] = 10; + ret = iio_format_value(buf, IIO_VAL_FRACTIONAL_LOG2, ARRAY_SIZE(values), values); + IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "0.000000000\n"); +} + +static void iio_test_iio_format_value_multiple(struct kunit *test) +{ + int values[] = {1, -2, 3, -4, 5}; + char *buf; + int ret; + + buf = kunit_kmalloc(test, PAGE_SIZE, GFP_KERNEL); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, buf); + + ret = iio_format_value(buf, IIO_VAL_INT_MULTIPLE, + ARRAY_SIZE(values), values); + IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "1 -2 3 -4 5 \n"); +} + +static void iio_test_iio_format_value_integer_64(struct kunit *test) +{ + int values[2]; + s64 value; + char *buf; + int ret; + + buf = kunit_kmalloc(test, PAGE_SIZE, GFP_KERNEL); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, buf); + + value = 24; + values[0] = lower_32_bits(value); + values[1] = upper_32_bits(value); + ret = iio_format_value(buf, IIO_VAL_INT_64, ARRAY_SIZE(values), values); + IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "24\n"); + + value = -24; + values[0] = lower_32_bits(value); + values[1] = upper_32_bits(value); + ret = iio_format_value(buf, IIO_VAL_INT_64, ARRAY_SIZE(values), values); + IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-24\n"); + + value = 0; + values[0] = lower_32_bits(value); + values[1] = upper_32_bits(value); + ret = iio_format_value(buf, IIO_VAL_INT_64, ARRAY_SIZE(values), values); + IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "0\n"); + + value = UINT_MAX; + values[0] = lower_32_bits(value); + values[1] = upper_32_bits(value); + ret = iio_format_value(buf, IIO_VAL_INT_64, ARRAY_SIZE(values), values); + IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "4294967295\n"); + + value = -((s64)UINT_MAX); + values[0] = lower_32_bits(value); + values[1] = upper_32_bits(value); + ret = iio_format_value(buf, IIO_VAL_INT_64, ARRAY_SIZE(values), values); + IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-4294967295\n"); + + value = LLONG_MAX; + values[0] = lower_32_bits(value); + values[1] = upper_32_bits(value); + ret = iio_format_value(buf, IIO_VAL_INT_64, ARRAY_SIZE(values), values); + IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "9223372036854775807\n"); + + value = LLONG_MIN; + values[0] = lower_32_bits(value); + values[1] = upper_32_bits(value); + ret = iio_format_value(buf, IIO_VAL_INT_64, ARRAY_SIZE(values), values); + IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-9223372036854775808\n"); +} + +static struct kunit_case iio_format_test_cases[] = { + KUNIT_CASE(iio_test_iio_format_value_integer), + KUNIT_CASE(iio_test_iio_format_value_fixedpoint), + KUNIT_CASE(iio_test_iio_format_value_fractional), + KUNIT_CASE(iio_test_iio_format_value_fractional_log2), + KUNIT_CASE(iio_test_iio_format_value_multiple), + KUNIT_CASE(iio_test_iio_format_value_integer_64), + {} +}; + +static struct kunit_suite iio_format_test_suite = { + .name = "iio-format", + .test_cases = iio_format_test_cases, +}; +kunit_test_suite(iio_format_test_suite); + +MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>"); +MODULE_DESCRIPTION("Test IIO formatting functions"); +MODULE_LICENSE("GPL v2"); |