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