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strutil: add method to get an sr_rational from a string
[libsigrok.git] / tests / strutil.c
CommitLineData
79bb0e97
UH		 1/*
2 * This file is part of the libsigrok project.
3 *
4 * Copyright (C) 2013 Uwe Hermann <uwe@hermann-uwe.de>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
6ec6c43b 21#include <config.h>
79bb0e97 22#include <check.h>
4960aeb0 23#include <libsigrok/libsigrok.h>
17794067 24#include "lib.h"
79bb0e97 25
79bb0e97
UH		 26static void test_samplerate(uint64_t samplerate, const char *expected)
27{
28 char *s;
29
30 s = sr_samplerate_string(samplerate);
31 fail_unless(s != NULL);
32 fail_unless(!strcmp(s, expected),
33 "Invalid result for '%s': %s.", expected, s);
34 g_free(s);
35}
36
5ec172d7
SB		 37static void test_rational(const char *input, struct sr_rational expected)
38{
39 int ret;
40 struct sr_rational rational;
41
42 ret = sr_parse_rational(input, &rational);
43 fail_unless(ret == SR_OK);
44 fail_unless((expected.p == rational.p) && (expected.q == rational.q),
45 "Invalid result for '%s': %ld/%ld'.",
46 input, rational.p, rational.q);
47}
48
79bb0e97
UH		 49/*
50 * Check various inputs for sr_samplerate_string():
51 *
52 * - One, two, or three digit results (e.g. 5/55/555 MHz).
53 * - Results which contain commas (e.g. 1.234 / 12.34 / 123.4 kHz).
54 * - Results with zeroes right after the comma (e.g. 1.034 Hz).
55 * See also: http://sigrok.org/bugzilla/show_bug.cgi?id=73
79bb0e97
UH		 56 * - Results with zeroes in the middle (e.g. 1.204 kHz).
57 * - All of the above, but using SR_MHZ() and friends.
58 * See also: http://sigrok.org/bugzilla/show_bug.cgi?id=72
59 *
60 * All of the above tests are done for the Hz/kHz/MHz/GHz ranges.
61 */
62
63START_TEST(test_hz)
64{
65 test_samplerate(0, "0 Hz");
66 test_samplerate(1, "1 Hz");
67 test_samplerate(23, "23 Hz");
68 test_samplerate(644, "644 Hz");
69 test_samplerate(604, "604 Hz");
70 test_samplerate(550, "550 Hz");
71
72 /* Again, but now using SR_HZ(). */
73 test_samplerate(SR_HZ(0), "0 Hz");
74 test_samplerate(SR_HZ(1), "1 Hz");
75 test_samplerate(SR_HZ(23), "23 Hz");
76 test_samplerate(SR_HZ(644), "644 Hz");
77 test_samplerate(SR_HZ(604), "604 Hz");
78 test_samplerate(SR_HZ(550), "550 Hz");
79}
80END_TEST
81
82START_TEST(test_khz)
83{
84 test_samplerate(1000, "1 kHz");
85 test_samplerate(99000, "99 kHz");
86 test_samplerate(225000, "225 kHz");
87 test_samplerate(1234, "1.234 kHz");
88 test_samplerate(12345, "12.345 kHz");
89 test_samplerate(123456, "123.456 kHz");
90 test_samplerate(1034, "1.034 kHz");
91 test_samplerate(1004, "1.004 kHz");
ba253f2b 92 test_samplerate(1230, "1.23 kHz");
79bb0e97
UH		 93
94 /* Again, but now using SR_KHZ(). */
95 test_samplerate(SR_KHZ(1), "1 kHz");
96 test_samplerate(SR_KHZ(99), "99 kHz");
97 test_samplerate(SR_KHZ(225), "225 kHz");
98 test_samplerate(SR_KHZ(1.234), "1.234 kHz");
99 test_samplerate(SR_KHZ(12.345), "12.345 kHz");
100 test_samplerate(SR_KHZ(123.456), "123.456 kHz");
101 test_samplerate(SR_KHZ(1.204), "1.204 kHz");
102 test_samplerate(SR_KHZ(1.034), "1.034 kHz");
103 test_samplerate(SR_KHZ(1.004), "1.004 kHz");
ba253f2b 104 test_samplerate(SR_KHZ(1.230), "1.23 kHz");
79bb0e97
UH		 105}
106END_TEST
107
108START_TEST(test_mhz)
109{
110 test_samplerate(1000000, "1 MHz");
111 test_samplerate(28000000, "28 MHz");
112 test_samplerate(775000000, "775 MHz");
113 test_samplerate(1234567, "1.234567 MHz");
114 test_samplerate(12345678, "12.345678 MHz");
115 test_samplerate(123456789, "123.456789 MHz");
116 test_samplerate(1230007, "1.230007 MHz");
117 test_samplerate(1034567, "1.034567 MHz");
118 test_samplerate(1000007, "1.000007 MHz");
ba253f2b 119 test_samplerate(1234000, "1.234 MHz");
79bb0e97
UH		 120
121 /* Again, but now using SR_MHZ(). */
122 test_samplerate(SR_MHZ(1), "1 MHz");
123 test_samplerate(SR_MHZ(28), "28 MHz");
124 test_samplerate(SR_MHZ(775), "775 MHz");
125 test_samplerate(SR_MHZ(1.234567), "1.234567 MHz");
126 test_samplerate(SR_MHZ(12.345678), "12.345678 MHz");
127 test_samplerate(SR_MHZ(123.456789), "123.456789 MHz");
128 test_samplerate(SR_MHZ(1.230007), "1.230007 MHz");
129 test_samplerate(SR_MHZ(1.034567), "1.034567 MHz");
130 test_samplerate(SR_MHZ(1.000007), "1.000007 MHz");
ba253f2b 131 test_samplerate(SR_MHZ(1.234000), "1.234 MHz");
79bb0e97
UH		 132}
133END_TEST
134
135START_TEST(test_ghz)
136{
137 /* Note: Numbers > 2^32 need a ULL suffix. */
138
139 test_samplerate(1000000000, "1 GHz");
140 test_samplerate(5000000000ULL, "5 GHz");
141 test_samplerate(72000000000ULL, "72 GHz");
142 test_samplerate(388000000000ULL, "388 GHz");
143 test_samplerate(4417594444ULL, "4.417594444 GHz");
144 test_samplerate(44175944444ULL, "44.175944444 GHz");
145 test_samplerate(441759444441ULL, "441.759444441 GHz");
146 test_samplerate(441759000001ULL, "441.759000001 GHz");
147 test_samplerate(441050000000ULL, "441.05 GHz");
148 test_samplerate(441000000005ULL, "441.000000005 GHz");
ba253f2b 149 test_samplerate(441500000000ULL, "441.5 GHz");
79bb0e97
UH		 150
151 /* Again, but now using SR_GHZ(). */
152 test_samplerate(SR_GHZ(1), "1 GHz");
153 test_samplerate(SR_GHZ(5), "5 GHz");
154 test_samplerate(SR_GHZ(72), "72 GHz");
155 test_samplerate(SR_GHZ(388), "388 GHz");
156 test_samplerate(SR_GHZ(4.417594444), "4.417594444 GHz");
157 test_samplerate(SR_GHZ(44.175944444), "44.175944444 GHz");
158 test_samplerate(SR_GHZ(441.759444441), "441.759444441 GHz");
159 test_samplerate(SR_GHZ(441.759000001), "441.759000001 GHz");
160 test_samplerate(SR_GHZ(441.050000000), "441.05 GHz");
161 test_samplerate(SR_GHZ(441.000000005), "441.000000005 GHz");
ba253f2b 162 test_samplerate(SR_GHZ(441.500000000), "441.5 GHz");
79bb0e97
UH		 163
164 /* Now check the biggest-possible samplerate (2^64 Hz). */
059f3632
UH		 165 // test_samplerate(18446744073709551615ULL, "18446744073.709551615 GHz");
166 // test_samplerate(SR_GHZ(18446744073ULL), "18446744073 GHz");
79bb0e97
UH		 167}
168END_TEST
169
5ec172d7
SB		 170START_TEST(test_integral)
171{
172 test_rational("1", (struct sr_rational){1, 1});
173 test_rational("2", (struct sr_rational){2, 1});
174 test_rational("10", (struct sr_rational){10, 1});
175 test_rational("-255", (struct sr_rational){-255, 1});
176}
177END_TEST
178
179START_TEST(test_fractional)
180{
181 test_rational("0.1", (struct sr_rational){1, 10});
182 test_rational("1.0", (struct sr_rational){10, 10});
183 test_rational("1.2", (struct sr_rational){12, 10});
184 test_rational("12.34", (struct sr_rational){1234, 100});
185 test_rational("-12.34", (struct sr_rational){-1234, 100});
186 test_rational("10.00", (struct sr_rational){1000, 100});
187}
188END_TEST
189
190START_TEST(test_exponent)
191{
192 test_rational("1e0", (struct sr_rational){1, 1});
193 test_rational("1E0", (struct sr_rational){1, 1});
194 test_rational("1E1", (struct sr_rational){10, 1});
195 test_rational("1e-1", (struct sr_rational){1, 10});
196 test_rational("-1.234e-0", (struct sr_rational){-1234, 1000});
197 test_rational("-1.234e3", (struct sr_rational){-1234, 1});
198 test_rational("-1.234e-3", (struct sr_rational){-1234, 1000000});
199 test_rational("0.001e3", (struct sr_rational){1, 1});
200 test_rational("0.001e0", (struct sr_rational){1, 1000});
201 test_rational("0.001e-3", (struct sr_rational){1, 1000000});
202}
203END_TEST
204
79bb0e97
UH		 205Suite *suite_strutil(void)
206{
207 Suite *s;
208 TCase *tc;
209
210 s = suite_create("strutil");
211
212 tc = tcase_create("sr_samplerate_string");
98de0c78 213 tcase_add_checked_fixture(tc, srtest_setup, srtest_teardown);
79bb0e97
UH		 214 tcase_add_test(tc, test_hz);
215 tcase_add_test(tc, test_khz);
216 tcase_add_test(tc, test_mhz);
217 tcase_add_test(tc, test_ghz);
5ec172d7
SB		 218 tcase_add_test(tc, test_integral);
219 tcase_add_test(tc, test_fractional);
220 tcase_add_test(tc, test_exponent);
79bb0e97
UH		 221 suite_add_tcase(s, tc);
222
223 return s;
224}
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