1 // SPDX-License-Identifier: GPL-2.0-only
2 /* Unit tests for IIO formatting functions
4 * Copyright (c) 2020 Lars-Peter Clausen <lars@metafoo.de>
7 #include <kunit/test.h>
8 #include <linux/iio/iio.h>
10 #define IIO_TEST_FORMAT_EXPECT_EQ(_test, _buf, _ret, _val) do { \
11 KUNIT_EXPECT_EQ(_test, strlen(_buf), _ret); \
12 KUNIT_EXPECT_STREQ(_test, (_buf), (_val)); \
15 static void iio_test_iio_format_value_integer(struct kunit *test)
17 char *buf = kunit_kmalloc(test, PAGE_SIZE, GFP_KERNEL);
22 ret = iio_format_value(buf, IIO_VAL_INT, 1, &val);
23 IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "42\n");
26 ret = iio_format_value(buf, IIO_VAL_INT, 1, &val);
27 IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-23\n");
30 ret = iio_format_value(buf, IIO_VAL_INT, 1, &val);
31 IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "0\n");
34 ret = iio_format_value(buf, IIO_VAL_INT, 1, &val);
35 IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "2147483647\n");
38 ret = iio_format_value(buf, IIO_VAL_INT, 1, &val);
39 IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-2147483648\n");
42 static void iio_test_iio_format_value_fixedpoint(struct kunit *test)
44 char *buf = kunit_kmalloc(test, PAGE_SIZE, GFP_KERNEL);
52 ret = iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO, 2, values);
53 IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "1.000010\n");
55 ret = iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO_DB, 2, values);
56 IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "1.000010 dB\n");
58 ret = iio_format_value(buf, IIO_VAL_INT_PLUS_NANO, 2, values);
59 IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "1.000000010\n");
65 ret = iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO, 2, values);
66 IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "0.000012\n");
68 ret = iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO_DB, 2, values);
69 IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "0.000012 dB\n");
71 ret = iio_format_value(buf, IIO_VAL_INT_PLUS_NANO, 2, values);
72 IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "0.000000012\n");
78 ret = iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO, 2, values);
79 IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-1.000010\n");
81 ret = iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO_DB, 2, values);
82 IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-1.000010 dB\n");
84 ret = iio_format_value(buf, IIO_VAL_INT_PLUS_NANO, 2, values);
85 IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-1.000000010\n");
90 ret = iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO, 2, values);
91 IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-0.000123\n");
93 ret = iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO_DB, 2, values);
94 IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-0.000123 dB\n");
96 ret = iio_format_value(buf, IIO_VAL_INT_PLUS_NANO, 2, values);
97 IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-0.000000123\n");
100 static void iio_test_iio_format_value_fractional(struct kunit *test)
102 char *buf = kunit_kmalloc(test, PAGE_SIZE, GFP_KERNEL);
109 ret = iio_format_value(buf, IIO_VAL_FRACTIONAL, 2, values);
110 IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "0.100000000\n");
115 ret = iio_format_value(buf, IIO_VAL_FRACTIONAL, 2, values);
116 IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "33.333333333\n");
120 values[1] = 1000000000;
121 ret = iio_format_value(buf, IIO_VAL_FRACTIONAL, 2, values);
122 IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-0.000000001\n");
127 ret = iio_format_value(buf, IIO_VAL_FRACTIONAL, 2, values);
128 IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-66.666666666\n");
133 ret = iio_format_value(buf, IIO_VAL_FRACTIONAL, 2, values);
134 IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "0.000000000\n");
137 static void iio_test_iio_format_value_fractional_log2(struct kunit *test)
139 char *buf = kunit_kmalloc(test, PAGE_SIZE, GFP_KERNEL);
146 ret = iio_format_value(buf, IIO_VAL_FRACTIONAL_LOG2, 2, values);
147 IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "0.120117187\n");
152 ret = iio_format_value(buf, IIO_VAL_FRACTIONAL_LOG2, 2, values);
153 IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "1205.631835937\n");
158 ret = iio_format_value(buf, IIO_VAL_FRACTIONAL_LOG2, 2, values);
159 IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-0.120117187\n");
162 values[0] = -1234567;
164 ret = iio_format_value(buf, IIO_VAL_FRACTIONAL_LOG2, 2, values);
165 IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-1205.631835937\n");
170 ret = iio_format_value(buf, IIO_VAL_FRACTIONAL_LOG2, 2, values);
171 IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "0.000000000\n");
174 static void iio_test_iio_format_value_multiple(struct kunit *test)
176 char *buf = kunit_kmalloc(test, PAGE_SIZE, GFP_KERNEL);
177 int values[] = {1, -2, 3, -4, 5};
180 ret = iio_format_value(buf, IIO_VAL_INT_MULTIPLE,
181 ARRAY_SIZE(values), values);
182 IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "1 -2 3 -4 5 \n");
185 static struct kunit_case iio_format_test_cases[] = {
186 KUNIT_CASE(iio_test_iio_format_value_integer),
187 KUNIT_CASE(iio_test_iio_format_value_fixedpoint),
188 KUNIT_CASE(iio_test_iio_format_value_fractional),
189 KUNIT_CASE(iio_test_iio_format_value_fractional_log2),
190 KUNIT_CASE(iio_test_iio_format_value_multiple),
194 static struct kunit_suite iio_format_test_suite = {
195 .name = "iio-format",
196 .test_cases = iio_format_test_cases,
198 kunit_test_suite(iio_format_test_suite);