1 | //===-- Unittests for gmtime ----------------------------------------------===// |
2 | // |
3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
4 | // See https://llvm.org/LICENSE.txt for license information. |
5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
6 | // |
7 | //===----------------------------------------------------------------------===// |
8 | |
9 | #include "hdr/types/struct_tm.h" |
10 | #include "src/__support/CPP/limits.h" // INT_MAX, INT_MIN |
11 | #include "src/__support/libc_errno.h" |
12 | #include "src/time/gmtime.h" |
13 | #include "src/time/time_constants.h" |
14 | #include "test/UnitTest/ErrnoSetterMatcher.h" |
15 | #include "test/UnitTest/Test.h" |
16 | #include "test/src/time/TmMatcher.h" |
17 | |
18 | using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Fails; |
19 | using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Succeeds; |
20 | |
21 | TEST(LlvmLibcGmTime, OutOfRange) { |
22 | if (sizeof(time_t) < sizeof(int64_t)) |
23 | return; |
24 | time_t seconds = |
25 | 1 + |
26 | INT_MAX * |
27 | static_cast<int64_t>( |
28 | LIBC_NAMESPACE::time_constants::NUMBER_OF_SECONDS_IN_LEAP_YEAR); |
29 | struct tm *tm_data = LIBC_NAMESPACE::gmtime(&seconds); |
30 | EXPECT_TRUE(tm_data == nullptr); |
31 | ASSERT_ERRNO_EQ(EOVERFLOW); |
32 | |
33 | libc_errno = 0; |
34 | seconds = |
35 | INT_MIN * |
36 | static_cast<int64_t>( |
37 | LIBC_NAMESPACE::time_constants::NUMBER_OF_SECONDS_IN_LEAP_YEAR) - |
38 | 1; |
39 | tm_data = LIBC_NAMESPACE::gmtime(&seconds); |
40 | EXPECT_TRUE(tm_data == nullptr); |
41 | ASSERT_ERRNO_EQ(EOVERFLOW); |
42 | } |
43 | |
44 | TEST(LlvmLibcGmTime, InvalidSeconds) { |
45 | time_t seconds = 0; |
46 | struct tm *tm_data = nullptr; |
47 | // -1 second from 1970-01-01 00:00:00 returns 1969-12-31 23:59:59. |
48 | seconds = -1; |
49 | tm_data = LIBC_NAMESPACE::gmtime(&seconds); |
50 | EXPECT_TM_EQ( |
51 | (tm{59, // sec |
52 | 59, // min |
53 | 23, // hr |
54 | 31, // day |
55 | 12 - 1, // tm_mon starts with 0 for Jan |
56 | 1969 - LIBC_NAMESPACE::time_constants::TIME_YEAR_BASE, // year |
57 | 3, // wday |
58 | 364, // yday |
59 | 0}), |
60 | *tm_data); |
61 | // 60 seconds from 1970-01-01 00:00:00 returns 1970-01-01 00:01:00. |
62 | seconds = 60; |
63 | tm_data = LIBC_NAMESPACE::gmtime(&seconds); |
64 | EXPECT_TM_EQ( |
65 | (tm{0, // sec |
66 | 1, // min |
67 | 0, // hr |
68 | 1, // day |
69 | 0, // tm_mon starts with 0 for Jan |
70 | 1970 - LIBC_NAMESPACE::time_constants::TIME_YEAR_BASE, // year |
71 | 4, // wday |
72 | 0, // yday |
73 | 0}), |
74 | *tm_data); |
75 | } |
76 | |
77 | TEST(LlvmLibcGmTime, InvalidMinutes) { |
78 | time_t seconds = 0; |
79 | struct tm *tm_data = nullptr; |
80 | // -1 minute from 1970-01-01 00:00:00 returns 1969-12-31 23:59:00. |
81 | seconds = -LIBC_NAMESPACE::time_constants::SECONDS_PER_MIN; |
82 | tm_data = LIBC_NAMESPACE::gmtime(&seconds); |
83 | EXPECT_TM_EQ( |
84 | (tm{0, // sec |
85 | 59, // min |
86 | 23, // hr |
87 | 31, // day |
88 | 11, // tm_mon starts with 0 for Jan |
89 | 1969 - LIBC_NAMESPACE::time_constants::TIME_YEAR_BASE, // year |
90 | 3, // wday |
91 | 0, // yday |
92 | 0}), |
93 | *tm_data); |
94 | // 60 minutes from 1970-01-01 00:00:00 returns 1970-01-01 01:00:00. |
95 | seconds = 60 * LIBC_NAMESPACE::time_constants::SECONDS_PER_MIN; |
96 | tm_data = LIBC_NAMESPACE::gmtime(&seconds); |
97 | EXPECT_TM_EQ( |
98 | (tm{0, // sec |
99 | 0, // min |
100 | 1, // hr |
101 | 1, // day |
102 | 0, // tm_mon starts with 0 for Jan |
103 | 1970 - LIBC_NAMESPACE::time_constants::TIME_YEAR_BASE, // year |
104 | 4, // wday |
105 | 0, // yday |
106 | 0}), |
107 | *tm_data); |
108 | } |
109 | |
110 | TEST(LlvmLibcGmTime, InvalidHours) { |
111 | time_t seconds = 0; |
112 | struct tm *tm_data = nullptr; |
113 | // -1 hour from 1970-01-01 00:00:00 returns 1969-12-31 23:00:00. |
114 | seconds = -LIBC_NAMESPACE::time_constants::SECONDS_PER_HOUR; |
115 | tm_data = LIBC_NAMESPACE::gmtime(&seconds); |
116 | EXPECT_TM_EQ( |
117 | (tm{0, // sec |
118 | 0, // min |
119 | 23, // hr |
120 | 31, // day |
121 | 11, // tm_mon starts with 0 for Jan |
122 | 1969 - LIBC_NAMESPACE::time_constants::TIME_YEAR_BASE, // year |
123 | 3, // wday |
124 | 0, // yday |
125 | 0}), |
126 | *tm_data); |
127 | // 24 hours from 1970-01-01 00:00:00 returns 1970-01-02 00:00:00. |
128 | seconds = 24 * LIBC_NAMESPACE::time_constants::SECONDS_PER_HOUR; |
129 | tm_data = LIBC_NAMESPACE::gmtime(&seconds); |
130 | EXPECT_TM_EQ( |
131 | (tm{0, // sec |
132 | 0, // min |
133 | 0, // hr |
134 | 2, // day |
135 | 0, // tm_mon starts with 0 for Jan |
136 | 1970 - LIBC_NAMESPACE::time_constants::TIME_YEAR_BASE, // year |
137 | 5, // wday |
138 | 0, // yday |
139 | 0}), |
140 | *tm_data); |
141 | } |
142 | |
143 | TEST(LlvmLibcGmTime, InvalidYear) { |
144 | // -1 year from 1970-01-01 00:00:00 returns 1969-01-01 00:00:00. |
145 | time_t seconds = -LIBC_NAMESPACE::time_constants::DAYS_PER_NON_LEAP_YEAR * |
146 | LIBC_NAMESPACE::time_constants::SECONDS_PER_DAY; |
147 | struct tm *tm_data = LIBC_NAMESPACE::gmtime(&seconds); |
148 | EXPECT_TM_EQ( |
149 | (tm{0, // sec |
150 | 0, // min |
151 | 0, // hr |
152 | 1, // day |
153 | 0, // tm_mon starts with 0 for Jan |
154 | 1969 - LIBC_NAMESPACE::time_constants::TIME_YEAR_BASE, // year |
155 | 3, // wday |
156 | 0, // yday |
157 | 0}), |
158 | *tm_data); |
159 | } |
160 | |
161 | TEST(LlvmLibcGmTime, InvalidMonths) { |
162 | time_t seconds = 0; |
163 | struct tm *tm_data = nullptr; |
164 | // -1 month from 1970-01-01 00:00:00 returns 1969-12-01 00:00:00. |
165 | seconds = -31 * LIBC_NAMESPACE::time_constants::SECONDS_PER_DAY; |
166 | tm_data = LIBC_NAMESPACE::gmtime(&seconds); |
167 | EXPECT_TM_EQ( |
168 | (tm{0, // sec |
169 | 0, // min |
170 | 0, // hr |
171 | 1, // day |
172 | 12 - 1, // tm_mon starts with 0 for Jan |
173 | 1969 - LIBC_NAMESPACE::time_constants::TIME_YEAR_BASE, // year |
174 | 1, // wday |
175 | 0, // yday |
176 | 0}), |
177 | *tm_data); |
178 | // 1970-13-01 00:00:00 returns 1971-01-01 00:00:00. |
179 | seconds = LIBC_NAMESPACE::time_constants::DAYS_PER_NON_LEAP_YEAR * |
180 | LIBC_NAMESPACE::time_constants::SECONDS_PER_DAY; |
181 | tm_data = LIBC_NAMESPACE::gmtime(&seconds); |
182 | EXPECT_TM_EQ( |
183 | (tm{0, // sec |
184 | 0, // min |
185 | 0, // hr |
186 | 1, // day |
187 | 0, // tm_mon starts with 0 for Jan |
188 | 1971 - LIBC_NAMESPACE::time_constants::TIME_YEAR_BASE, // year |
189 | 5, // wday |
190 | 0, // yday |
191 | 0}), |
192 | *tm_data); |
193 | } |
194 | |
195 | TEST(LlvmLibcGmTime, InvalidDays) { |
196 | time_t seconds = 0; |
197 | struct tm *tm_data = nullptr; |
198 | // -1 day from 1970-01-01 00:00:00 returns 1969-12-31 00:00:00. |
199 | seconds = -1 * LIBC_NAMESPACE::time_constants::SECONDS_PER_DAY; |
200 | tm_data = LIBC_NAMESPACE::gmtime(&seconds); |
201 | EXPECT_TM_EQ( |
202 | (tm{0, // sec |
203 | 0, // min |
204 | 0, // hr |
205 | 31, // day |
206 | 11, // tm_mon starts with 0 for Jan |
207 | 1969 - LIBC_NAMESPACE::time_constants::TIME_YEAR_BASE, // year |
208 | 3, // wday |
209 | 0, // yday |
210 | 0}), |
211 | *tm_data); |
212 | |
213 | // 1970-01-32 00:00:00 returns 1970-02-01 00:00:00. |
214 | seconds = 31 * LIBC_NAMESPACE::time_constants::SECONDS_PER_DAY; |
215 | tm_data = LIBC_NAMESPACE::gmtime(&seconds); |
216 | EXPECT_TM_EQ( |
217 | (tm{0, // sec |
218 | 0, // min |
219 | 0, // hr |
220 | 1, // day |
221 | 0, // tm_mon starts with 0 for Jan |
222 | 1970 - LIBC_NAMESPACE::time_constants::TIME_YEAR_BASE, // year |
223 | 0, // wday |
224 | 0, // yday |
225 | 0}), |
226 | *tm_data); |
227 | |
228 | // 1970-02-29 00:00:00 returns 1970-03-01 00:00:00. |
229 | seconds = 59 * LIBC_NAMESPACE::time_constants::SECONDS_PER_DAY; |
230 | tm_data = LIBC_NAMESPACE::gmtime(&seconds); |
231 | EXPECT_TM_EQ( |
232 | (tm{0, // sec |
233 | 0, // min |
234 | 0, // hr |
235 | 1, // day |
236 | 2, // tm_mon starts with 0 for Jan |
237 | 1970 - LIBC_NAMESPACE::time_constants::TIME_YEAR_BASE, // year |
238 | 0, // wday |
239 | 0, // yday |
240 | 0}), |
241 | *tm_data); |
242 | |
243 | // 1972-02-30 00:00:00 returns 1972-03-01 00:00:00. |
244 | seconds = |
245 | ((2 * LIBC_NAMESPACE::time_constants::DAYS_PER_NON_LEAP_YEAR) + 60) * |
246 | LIBC_NAMESPACE::time_constants::SECONDS_PER_DAY; |
247 | tm_data = LIBC_NAMESPACE::gmtime(&seconds); |
248 | EXPECT_TM_EQ( |
249 | (tm{0, // sec |
250 | 0, // min |
251 | 0, // hr |
252 | 1, // day |
253 | 2, // tm_mon starts with 0 for Jan |
254 | 1972 - LIBC_NAMESPACE::time_constants::TIME_YEAR_BASE, // year |
255 | 3, // wday |
256 | 0, // yday |
257 | 0}), |
258 | *tm_data); |
259 | } |
260 | |
261 | TEST(LlvmLibcGmTime, EndOf32BitEpochYear) { |
262 | // Test for maximum value of a signed 32-bit integer. |
263 | // Test implementation can encode time for Tue 19 January 2038 03:14:07 UTC. |
264 | time_t seconds = 0x7FFFFFFF; |
265 | struct tm *tm_data = LIBC_NAMESPACE::gmtime(&seconds); |
266 | EXPECT_TM_EQ( |
267 | (tm{7, // sec |
268 | 14, // min |
269 | 3, // hr |
270 | 19, // day |
271 | 0, // tm_mon starts with 0 for Jan |
272 | 2038 - LIBC_NAMESPACE::time_constants::TIME_YEAR_BASE, // year |
273 | 2, // wday |
274 | 7, // yday |
275 | 0}), |
276 | *tm_data); |
277 | } |
278 | |
279 | TEST(LlvmLibcGmTime, Max64BitYear) { |
280 | if (sizeof(time_t) == 4) |
281 | return; |
282 | // Mon Jan 1 12:50:50 2170 (200 years from 1970), |
283 | time_t seconds = 6311479850; |
284 | struct tm *tm_data = LIBC_NAMESPACE::gmtime(&seconds); |
285 | EXPECT_TM_EQ( |
286 | (tm{50, // sec |
287 | 50, // min |
288 | 12, // hr |
289 | 1, // day |
290 | 0, // tm_mon starts with 0 for Jan |
291 | 2170 - LIBC_NAMESPACE::time_constants::TIME_YEAR_BASE, // year |
292 | 1, // wday |
293 | 50, // yday |
294 | 0}), |
295 | *tm_data); |
296 | |
297 | // Test for Tue Jan 1 12:50:50 in 2,147,483,647th year. |
298 | seconds = 67767976202043050; |
299 | tm_data = LIBC_NAMESPACE::gmtime(&seconds); |
300 | EXPECT_TM_EQ( |
301 | (tm{50, // sec |
302 | 50, // min |
303 | 12, // hr |
304 | 1, // day |
305 | 0, // tm_mon starts with 0 for Jan |
306 | 2147483647 - LIBC_NAMESPACE::time_constants::TIME_YEAR_BASE, // year |
307 | 2, // wday |
308 | 50, // yday |
309 | 0}), |
310 | *tm_data); |
311 | } |
312 | |