src/test/test-time-util.c

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2
   3 #include "env-util.h"
   4 #include "random-util.h"
   5 #include "serialize.h"
   6 #include "string-util.h"
   7 #include "strv.h"
   8 #include "tests.h"
   9 #include "time-util.h"
  10
  11 TEST(parse_sec) {
  12         usec_t u;
  13
  14         assert_se(parse_sec("5s", &u) >= 0);
  15         assert_se(u == 5 * USEC_PER_SEC);
  16         assert_se(parse_sec("5s500ms", &u) >= 0);
  17         assert_se(u == 5 * USEC_PER_SEC + 500 * USEC_PER_MSEC);
  18         assert_se(parse_sec(" 5s 500ms  ", &u) >= 0);
  19         assert_se(u == 5 * USEC_PER_SEC + 500 * USEC_PER_MSEC);
  20         assert_se(parse_sec(" 5.5s  ", &u) >= 0);
  21         assert_se(u == 5 * USEC_PER_SEC + 500 * USEC_PER_MSEC);
  22         assert_se(parse_sec(" 5.5s 0.5ms ", &u) >= 0);
  23         assert_se(u == 5 * USEC_PER_SEC + 500 * USEC_PER_MSEC + 500);
  24         assert_se(parse_sec(" .22s ", &u) >= 0);
  25         assert_se(u == 220 * USEC_PER_MSEC);
  26         assert_se(parse_sec(" .50y ", &u) >= 0);
  27         assert_se(u == USEC_PER_YEAR / 2);
  28         assert_se(parse_sec("2.5", &u) >= 0);
  29         assert_se(u == 2500 * USEC_PER_MSEC);
  30         assert_se(parse_sec(".7", &u) >= 0);
  31         assert_se(u == 700 * USEC_PER_MSEC);
  32         assert_se(parse_sec("23us", &u) >= 0);
  33         assert_se(u == 23);
  34         assert_se(parse_sec("23µs", &u) >= 0);
  35         assert_se(u == 23);
  36         assert_se(parse_sec("infinity", &u) >= 0);
  37         assert_se(u == USEC_INFINITY);
  38         assert_se(parse_sec(" infinity ", &u) >= 0);
  39         assert_se(u == USEC_INFINITY);
  40         assert_se(parse_sec("+3.1s", &u) >= 0);
  41         assert_se(u == 3100 * USEC_PER_MSEC);
  42         assert_se(parse_sec("3.1s.2", &u) >= 0);
  43         assert_se(u == 3300 * USEC_PER_MSEC);
  44         assert_se(parse_sec("3.1 .2", &u) >= 0);
  45         assert_se(u == 3300 * USEC_PER_MSEC);
  46         assert_se(parse_sec("3.1 sec .2 sec", &u) >= 0);
  47         assert_se(u == 3300 * USEC_PER_MSEC);
  48         assert_se(parse_sec("3.1 sec 1.2 sec", &u) >= 0);
  49         assert_se(u == 4300 * USEC_PER_MSEC);
  50
  51         assert_se(parse_sec(" xyz ", &u) < 0);
  52         assert_se(parse_sec("", &u) < 0);
  53         assert_se(parse_sec(" . ", &u) < 0);
  54         assert_se(parse_sec(" 5. ", &u) < 0);
  55         assert_se(parse_sec(".s ", &u) < 0);
  56         assert_se(parse_sec("-5s ", &u) < 0);
  57         assert_se(parse_sec("-0.3s ", &u) < 0);
  58         assert_se(parse_sec("-0.0s ", &u) < 0);
  59         assert_se(parse_sec("-0.-0s ", &u) < 0);
  60         assert_se(parse_sec("0.-0s ", &u) < 0);
  61         assert_se(parse_sec("3.-0s ", &u) < 0);
  62         assert_se(parse_sec(" infinity .7", &u) < 0);
  63         assert_se(parse_sec(".3 infinity", &u) < 0);
  64         assert_se(parse_sec("3.+1s", &u) < 0);
  65         assert_se(parse_sec("3. 1s", &u) < 0);
  66         assert_se(parse_sec("3.s", &u) < 0);
  67         assert_se(parse_sec("12.34.56", &u) < 0);
  68         assert_se(parse_sec("12..34", &u) < 0);
  69         assert_se(parse_sec("..1234", &u) < 0);
  70         assert_se(parse_sec("1234..", &u) < 0);
  71 }
  72
  73 TEST(parse_sec_fix_0) {
  74         usec_t u;
  75
  76         assert_se(parse_sec_fix_0("5s", &u) >= 0);
  77         assert_se(u == 5 * USEC_PER_SEC);
  78         assert_se(parse_sec_fix_0("0s", &u) >= 0);
  79         assert_se(u == USEC_INFINITY);
  80         assert_se(parse_sec_fix_0("0", &u) >= 0);
  81         assert_se(u == USEC_INFINITY);
  82         assert_se(parse_sec_fix_0(" 0", &u) >= 0);
  83         assert_se(u == USEC_INFINITY);
  84 }
  85
  86 TEST(parse_sec_def_infinity) {
  87         usec_t u;
  88
  89         assert_se(parse_sec_def_infinity("5s", &u) >= 0);
  90         assert_se(u == 5 * USEC_PER_SEC);
  91         assert_se(parse_sec_def_infinity("", &u) >= 0);
  92         assert_se(u == USEC_INFINITY);
  93         assert_se(parse_sec_def_infinity("     ", &u) >= 0);
  94         assert_se(u == USEC_INFINITY);
  95         assert_se(parse_sec_def_infinity("0s", &u) >= 0);
  96         assert_se(u == 0);
  97         assert_se(parse_sec_def_infinity("0", &u) >= 0);
  98         assert_se(u == 0);
  99         assert_se(parse_sec_def_infinity(" 0", &u) >= 0);
 100         assert_se(u == 0);
 101         assert_se(parse_sec_def_infinity("-5s", &u) < 0);
 102 }
 103
 104 TEST(parse_time) {
 105         usec_t u;
 106
 107         assert_se(parse_time("5", &u, 1) >= 0);
 108         assert_se(u == 5);
 109
 110         assert_se(parse_time("5", &u, USEC_PER_MSEC) >= 0);
 111         assert_se(u == 5 * USEC_PER_MSEC);
 112
 113         assert_se(parse_time("5", &u, USEC_PER_SEC) >= 0);
 114         assert_se(u == 5 * USEC_PER_SEC);
 115
 116         assert_se(parse_time("5s", &u, 1) >= 0);
 117         assert_se(u == 5 * USEC_PER_SEC);
 118
 119         assert_se(parse_time("5s", &u, USEC_PER_SEC) >= 0);
 120         assert_se(u == 5 * USEC_PER_SEC);
 121
 122         assert_se(parse_time("5s", &u, USEC_PER_MSEC) >= 0);
 123         assert_se(u == 5 * USEC_PER_SEC);
 124
 125         assert_se(parse_time("11111111111111y", &u, 1) == -ERANGE);
 126         assert_se(parse_time("1.1111111111111y", &u, 1) >= 0);
 127 }
 128
 129 TEST(parse_nsec) {
 130         nsec_t u;
 131
 132         assert_se(parse_nsec("5s", &u) >= 0);
 133         assert_se(u == 5 * NSEC_PER_SEC);
 134         assert_se(parse_nsec("5s500ms", &u) >= 0);
 135         assert_se(u == 5 * NSEC_PER_SEC + 500 * NSEC_PER_MSEC);
 136         assert_se(parse_nsec(" 5s 500ms  ", &u) >= 0);
 137         assert_se(u == 5 * NSEC_PER_SEC + 500 * NSEC_PER_MSEC);
 138         assert_se(parse_nsec(" 5.5s  ", &u) >= 0);
 139         assert_se(u == 5 * NSEC_PER_SEC + 500 * NSEC_PER_MSEC);
 140         assert_se(parse_nsec(" 5.5s 0.5ms ", &u) >= 0);
 141         assert_se(u == 5 * NSEC_PER_SEC + 500 * NSEC_PER_MSEC + 500 * NSEC_PER_USEC);
 142         assert_se(parse_nsec(" .22s ", &u) >= 0);
 143         assert_se(u == 220 * NSEC_PER_MSEC);
 144         assert_se(parse_nsec(" .50y ", &u) >= 0);
 145         assert_se(u == NSEC_PER_YEAR / 2);
 146         assert_se(parse_nsec("2.5", &u) >= 0);
 147         assert_se(u == 2);
 148         assert_se(parse_nsec(".7", &u) >= 0);
 149         assert_se(u == 0);
 150         assert_se(parse_nsec("infinity", &u) >= 0);
 151         assert_se(u == NSEC_INFINITY);
 152         assert_se(parse_nsec(" infinity ", &u) >= 0);
 153         assert_se(u == NSEC_INFINITY);
 154         assert_se(parse_nsec("+3.1s", &u) >= 0);
 155         assert_se(u == 3100 * NSEC_PER_MSEC);
 156         assert_se(parse_nsec("3.1s.2", &u) >= 0);
 157         assert_se(u == 3100 * NSEC_PER_MSEC);
 158         assert_se(parse_nsec("3.1 .2s", &u) >= 0);
 159         assert_se(u == 200 * NSEC_PER_MSEC + 3);
 160         assert_se(parse_nsec("3.1 sec .2 sec", &u) >= 0);
 161         assert_se(u == 3300 * NSEC_PER_MSEC);
 162         assert_se(parse_nsec("3.1 sec 1.2 sec", &u) >= 0);
 163         assert_se(u == 4300 * NSEC_PER_MSEC);
 164
 165         assert_se(parse_nsec(" xyz ", &u) < 0);
 166         assert_se(parse_nsec("", &u) < 0);
 167         assert_se(parse_nsec(" . ", &u) < 0);
 168         assert_se(parse_nsec(" 5. ", &u) < 0);
 169         assert_se(parse_nsec(".s ", &u) < 0);
 170         assert_se(parse_nsec(" infinity .7", &u) < 0);
 171         assert_se(parse_nsec(".3 infinity", &u) < 0);
 172         assert_se(parse_nsec("-5s ", &u) < 0);
 173         assert_se(parse_nsec("-0.3s ", &u) < 0);
 174         assert_se(parse_nsec("-0.0s ", &u) < 0);
 175         assert_se(parse_nsec("-0.-0s ", &u) < 0);
 176         assert_se(parse_nsec("0.-0s ", &u) < 0);
 177         assert_se(parse_nsec("3.-0s ", &u) < 0);
 178         assert_se(parse_nsec(" infinity .7", &u) < 0);
 179         assert_se(parse_nsec(".3 infinity", &u) < 0);
 180         assert_se(parse_nsec("3.+1s", &u) < 0);
 181         assert_se(parse_nsec("3. 1s", &u) < 0);
 182         assert_se(parse_nsec("3.s", &u) < 0);
 183         assert_se(parse_nsec("12.34.56", &u) < 0);
 184         assert_se(parse_nsec("12..34", &u) < 0);
 185         assert_se(parse_nsec("..1234", &u) < 0);
 186         assert_se(parse_nsec("1234..", &u) < 0);
 187         assert_se(parse_nsec("1111111111111y", &u) == -ERANGE);
 188         assert_se(parse_nsec("1.111111111111y", &u) >= 0);
 189 }
 190
 191 static void test_format_timespan_one(usec_t x, usec_t accuracy) {
 192         char l[FORMAT_TIMESPAN_MAX];
 193         const char *t;
 194         usec_t y;
 195
 196         log_debug(USEC_FMT"     (at accuracy "USEC_FMT")", x, accuracy);
 197
 198         assert_se(t = format_timespan(l, sizeof l, x, accuracy));
 199         log_debug(" = <%s>", t);
 200
 201         assert_se(parse_sec(t, &y) >= 0);
 202         log_debug(" = "USEC_FMT, y);
 203
 204         if (accuracy <= 0)
 205                 accuracy = 1;
 206
 207         assert_se(x / accuracy == y / accuracy);
 208 }
 209
 210 static void test_format_timespan_accuracy(usec_t accuracy) {
 211         log_info("/* %s accuracy="USEC_FMT" */", __func__, accuracy);
 212
 213         test_format_timespan_one(0, accuracy);
 214         test_format_timespan_one(1, accuracy);
 215         test_format_timespan_one(1*USEC_PER_SEC, accuracy);
 216         test_format_timespan_one(999*USEC_PER_MSEC, accuracy);
 217         test_format_timespan_one(1234567, accuracy);
 218         test_format_timespan_one(12, accuracy);
 219         test_format_timespan_one(123, accuracy);
 220         test_format_timespan_one(1234, accuracy);
 221         test_format_timespan_one(12345, accuracy);
 222         test_format_timespan_one(123456, accuracy);
 223         test_format_timespan_one(1234567, accuracy);
 224         test_format_timespan_one(12345678, accuracy);
 225         test_format_timespan_one(1200000, accuracy);
 226         test_format_timespan_one(1230000, accuracy);
 227         test_format_timespan_one(1234000, accuracy);
 228         test_format_timespan_one(1234500, accuracy);
 229         test_format_timespan_one(1234560, accuracy);
 230         test_format_timespan_one(1234567, accuracy);
 231         test_format_timespan_one(986087, accuracy);
 232         test_format_timespan_one(500 * USEC_PER_MSEC, accuracy);
 233         test_format_timespan_one(9*USEC_PER_YEAR/5 - 23, accuracy);
 234         test_format_timespan_one(USEC_INFINITY, accuracy);
 235 }
 236
 237 TEST(format_timespan) {
 238         test_format_timespan_accuracy(1);
 239         test_format_timespan_accuracy(USEC_PER_MSEC);
 240         test_format_timespan_accuracy(USEC_PER_SEC);
 241 }
 242
 243 TEST(verify_timezone) {
 244         assert_se(verify_timezone("Europe/Berlin", LOG_DEBUG) == 0);
 245         assert_se(verify_timezone("Australia/Sydney", LOG_DEBUG) == 0);
 246         assert_se(verify_timezone("Europe/Do not exist", LOG_DEBUG) == -EINVAL);
 247         assert_se(verify_timezone("Europe/DoNotExist", LOG_DEBUG) == -ENOENT);
 248         assert_se(verify_timezone("/DoNotExist", LOG_DEBUG) == -EINVAL);
 249         assert_se(verify_timezone("DoNotExist/", LOG_DEBUG) == -EINVAL);
 250 }
 251
 252 TEST(timezone_is_valid) {
 253         assert_se(timezone_is_valid("Europe/Berlin", LOG_ERR));
 254         assert_se(timezone_is_valid("Australia/Sydney", LOG_ERR));
 255         assert_se(!timezone_is_valid("Europe/Do not exist", LOG_ERR));
 256 }
 257
 258 TEST(get_timezones) {
 259         _cleanup_strv_free_ char **zones = NULL;
 260         int r;
 261         char **zone;
 262
 263         r = get_timezones(&zones);
 264         assert_se(r == 0);
 265
 266         STRV_FOREACH(zone, zones) {
 267                 r = verify_timezone(*zone, LOG_ERR);
 268                 log_debug_errno(r, "verify_timezone(\"%s\"): %m", *zone);
 269                 assert_se(r >= 0 || r == -ENOENT);
 270         }
 271 }
 272
 273 TEST(usec_add) {
 274         assert_se(usec_add(0, 0) == 0);
 275         assert_se(usec_add(1, 4) == 5);
 276         assert_se(usec_add(USEC_INFINITY, 5) == USEC_INFINITY);
 277         assert_se(usec_add(5, USEC_INFINITY) == USEC_INFINITY);
 278         assert_se(usec_add(USEC_INFINITY-5, 2) == USEC_INFINITY-3);
 279         assert_se(usec_add(USEC_INFINITY-2, 2) == USEC_INFINITY);
 280         assert_se(usec_add(USEC_INFINITY-1, 2) == USEC_INFINITY);
 281         assert_se(usec_add(USEC_INFINITY, 2) == USEC_INFINITY);
 282 }
 283
 284 TEST(usec_sub_unsigned) {
 285         assert_se(usec_sub_unsigned(0, 0) == 0);
 286         assert_se(usec_sub_unsigned(0, 2) == 0);
 287         assert_se(usec_sub_unsigned(0, USEC_INFINITY) == 0);
 288         assert_se(usec_sub_unsigned(1, 0) == 1);
 289         assert_se(usec_sub_unsigned(1, 1) == 0);
 290         assert_se(usec_sub_unsigned(1, 2) == 0);
 291         assert_se(usec_sub_unsigned(1, 3) == 0);
 292         assert_se(usec_sub_unsigned(1, USEC_INFINITY) == 0);
 293         assert_se(usec_sub_unsigned(USEC_INFINITY-1, 0) == USEC_INFINITY-1);
 294         assert_se(usec_sub_unsigned(USEC_INFINITY-1, 1) == USEC_INFINITY-2);
 295         assert_se(usec_sub_unsigned(USEC_INFINITY-1, 2) == USEC_INFINITY-3);
 296         assert_se(usec_sub_unsigned(USEC_INFINITY-1, USEC_INFINITY-2) == 1);
 297         assert_se(usec_sub_unsigned(USEC_INFINITY-1, USEC_INFINITY-1) == 0);
 298         assert_se(usec_sub_unsigned(USEC_INFINITY-1, USEC_INFINITY) == 0);
 299         assert_se(usec_sub_unsigned(USEC_INFINITY, 0) == USEC_INFINITY);
 300         assert_se(usec_sub_unsigned(USEC_INFINITY, 1) == USEC_INFINITY);
 301         assert_se(usec_sub_unsigned(USEC_INFINITY, 2) == USEC_INFINITY);
 302         assert_se(usec_sub_unsigned(USEC_INFINITY, USEC_INFINITY) == USEC_INFINITY);
 303 }
 304
 305 TEST(usec_sub_signed) {
 306         assert_se(usec_sub_signed(0, 0) == 0);
 307         assert_se(usec_sub_signed(4, 1) == 3);
 308         assert_se(usec_sub_signed(4, 4) == 0);
 309         assert_se(usec_sub_signed(4, 5) == 0);
 310         assert_se(usec_sub_signed(USEC_INFINITY-3, -3) == USEC_INFINITY);
 311         assert_se(usec_sub_signed(USEC_INFINITY-3, -4) == USEC_INFINITY);
 312         assert_se(usec_sub_signed(USEC_INFINITY-3, -5) == USEC_INFINITY);
 313         assert_se(usec_sub_signed(USEC_INFINITY, 5) == USEC_INFINITY);
 314 }
 315
 316 TEST(format_timestamp) {
 317         for (unsigned i = 0; i < 100; i++) {
 318                 char buf[MAX(FORMAT_TIMESTAMP_MAX, FORMAT_TIMESPAN_MAX)];
 319                 usec_t x, y;
 320
 321                 x = random_u64_range(2147483600 * USEC_PER_SEC) + 1;
 322
 323                 assert_se(format_timestamp(buf, sizeof(buf), x));
 324                 log_debug("%s", buf);
 325                 assert_se(parse_timestamp(buf, &y) >= 0);
 326                 assert_se(x / USEC_PER_SEC == y / USEC_PER_SEC);
 327
 328                 assert_se(format_timestamp_style(buf, sizeof(buf), x, TIMESTAMP_UNIX));
 329                 log_debug("%s", buf);
 330                 assert_se(parse_timestamp(buf, &y) >= 0);
 331                 assert_se(x / USEC_PER_SEC == y / USEC_PER_SEC);
 332
 333                 assert_se(format_timestamp_style(buf, sizeof(buf), x, TIMESTAMP_UTC));
 334                 log_debug("%s", buf);
 335                 assert_se(parse_timestamp(buf, &y) >= 0);
 336                 assert_se(x / USEC_PER_SEC == y / USEC_PER_SEC);
 337
 338                 assert_se(format_timestamp_style(buf, sizeof(buf), x, TIMESTAMP_US));
 339                 log_debug("%s", buf);
 340                 assert_se(parse_timestamp(buf, &y) >= 0);
 341                 assert_se(x == y);
 342
 343                 assert_se(format_timestamp_style(buf, sizeof(buf), x, TIMESTAMP_US_UTC));
 344                 log_debug("%s", buf);
 345                 assert_se(parse_timestamp(buf, &y) >= 0);
 346                 assert_se(x == y);
 347
 348                 assert_se(format_timestamp_relative(buf, sizeof(buf), x));
 349                 log_debug("%s", buf);
 350                 assert_se(parse_timestamp(buf, &y) >= 0);
 351
 352                 /* The two calls above will run with a slightly different local time. Make sure we are in the same
 353                  * range however, but give enough leeway that this is unlikely to explode. And of course,
 354                  * format_timestamp_relative() scales the accuracy with the distance from the current time up to one
 355                  * month, cover for that too. */
 356                 assert_se(y > x ? y - x : x - y <= USEC_PER_MONTH + USEC_PER_DAY);
 357         }
 358 }
 359
 360 TEST(FORMAT_TIMESTAMP) {
 361         for (unsigned i = 0; i < 100; i++) {
 362                 _cleanup_free_ char *buf;
 363                 usec_t x, y;
 364
 365                 x = random_u64_range(2147483600 * USEC_PER_SEC) + 1;
 366
 367                 /* strbuf() is to test the macro in an argument to a function call. */
 368                 assert_se(buf = strdup(FORMAT_TIMESTAMP(x)));
 369                 log_debug("%s", buf);
 370                 assert_se(parse_timestamp(buf, &y) >= 0);
 371                 assert_se(x / USEC_PER_SEC == y / USEC_PER_SEC);
 372
 373                 assert_se(streq(FORMAT_TIMESTAMP(x), buf));
 374         }
 375 }
 376
 377 TEST(format_timestamp_relative) {
 378         char buf[MAX(FORMAT_TIMESTAMP_MAX, FORMAT_TIMESPAN_MAX)];
 379         usec_t x;
 380
 381         /* Only testing timestamps in the past so we don't need to add some delta to account for time passing
 382          * by while we are running the tests (unless we're running on potatoes and 24 hours somehow passes
 383          * between our call to now() and format_timestamp_relative's call to now()). */
 384
 385         /* Years and months */
 386         x = now(CLOCK_REALTIME) - (1*USEC_PER_YEAR + 1*USEC_PER_MONTH);
 387         assert_se(format_timestamp_relative(buf, sizeof(buf), x));
 388         log_debug("%s", buf);
 389         assert_se(streq(buf, "1 year 1 month ago"));
 390
 391         x = now(CLOCK_REALTIME) - (1*USEC_PER_YEAR + 2*USEC_PER_MONTH);
 392         assert_se(format_timestamp_relative(buf, sizeof(buf), x));
 393         log_debug("%s", buf);
 394         assert_se(streq(buf, "1 year 2 months ago"));
 395
 396         x = now(CLOCK_REALTIME) - (2*USEC_PER_YEAR + 1*USEC_PER_MONTH);
 397         assert_se(format_timestamp_relative(buf, sizeof(buf), x));
 398         log_debug("%s", buf);
 399         assert_se(streq(buf, "2 years 1 month ago"));
 400
 401         x = now(CLOCK_REALTIME) - (2*USEC_PER_YEAR + 2*USEC_PER_MONTH);
 402         assert_se(format_timestamp_relative(buf, sizeof(buf), x));
 403         log_debug("%s", buf);
 404         assert_se(streq(buf, "2 years 2 months ago"));
 405
 406         /* Months and days */
 407         x = now(CLOCK_REALTIME) - (1*USEC_PER_MONTH + 1*USEC_PER_DAY);
 408         assert_se(format_timestamp_relative(buf, sizeof(buf), x));
 409         log_debug("%s", buf);
 410         assert_se(streq(buf, "1 month 1 day ago"));
 411
 412         x = now(CLOCK_REALTIME) - (1*USEC_PER_MONTH + 2*USEC_PER_DAY);
 413         assert_se(format_timestamp_relative(buf, sizeof(buf), x));
 414         log_debug("%s", buf);
 415         assert_se(streq(buf, "1 month 2 days ago"));
 416
 417         x = now(CLOCK_REALTIME) - (2*USEC_PER_MONTH + 1*USEC_PER_DAY);
 418         assert_se(format_timestamp_relative(buf, sizeof(buf), x));
 419         log_debug("%s", buf);
 420         assert_se(streq(buf, "2 months 1 day ago"));
 421
 422         x = now(CLOCK_REALTIME) - (2*USEC_PER_MONTH + 2*USEC_PER_DAY);
 423         assert_se(format_timestamp_relative(buf, sizeof(buf), x));
 424         log_debug("%s", buf);
 425         assert_se(streq(buf, "2 months 2 days ago"));
 426
 427         /* Weeks and days */
 428         x = now(CLOCK_REALTIME) - (1*USEC_PER_WEEK + 1*USEC_PER_DAY);
 429         assert_se(format_timestamp_relative(buf, sizeof(buf), x));
 430         log_debug("%s", buf);
 431         assert_se(streq(buf, "1 week 1 day ago"));
 432
 433         x = now(CLOCK_REALTIME) - (1*USEC_PER_WEEK + 2*USEC_PER_DAY);
 434         assert_se(format_timestamp_relative(buf, sizeof(buf), x));
 435         log_debug("%s", buf);
 436         assert_se(streq(buf, "1 week 2 days ago"));
 437
 438         x = now(CLOCK_REALTIME) - (2*USEC_PER_WEEK + 1*USEC_PER_DAY);
 439         assert_se(format_timestamp_relative(buf, sizeof(buf), x));
 440         log_debug("%s", buf);
 441         assert_se(streq(buf, "2 weeks 1 day ago"));
 442
 443         x = now(CLOCK_REALTIME) - (2*USEC_PER_WEEK + 2*USEC_PER_DAY);
 444         assert_se(format_timestamp_relative(buf, sizeof(buf), x));
 445         log_debug("%s", buf);
 446         assert_se(streq(buf, "2 weeks 2 days ago"));
 447 }
 448
 449 static void test_format_timestamp_utc_one(usec_t val, const char *result) {
 450         char buf[FORMAT_TIMESTAMP_MAX];
 451         const char *t;
 452
 453         t = format_timestamp_style(buf, sizeof(buf), val, TIMESTAMP_UTC);
 454         assert_se(streq_ptr(t, result));
 455 }
 456
 457 TEST(format_timestamp_utc) {
 458         test_format_timestamp_utc_one(0, NULL);
 459         test_format_timestamp_utc_one(1, "Thu 1970-01-01 00:00:00 UTC");
 460         test_format_timestamp_utc_one(USEC_PER_SEC, "Thu 1970-01-01 00:00:01 UTC");
 461
 462 #if SIZEOF_TIME_T == 8
 463         test_format_timestamp_utc_one(USEC_TIMESTAMP_FORMATTABLE_MAX, "Thu 9999-12-30 23:59:59 UTC");
 464         test_format_timestamp_utc_one(USEC_TIMESTAMP_FORMATTABLE_MAX + 1, "--- XXXX-XX-XX XX:XX:XX");
 465 #elif SIZEOF_TIME_T == 4
 466         test_format_timestamp_utc_one(USEC_TIMESTAMP_FORMATTABLE_MAX, "Tue 2038-01-19 03:14:07 UTC");
 467         test_format_timestamp_utc_one(USEC_TIMESTAMP_FORMATTABLE_MAX + 1, "--- XXXX-XX-XX XX:XX:XX");
 468 #endif
 469
 470         test_format_timestamp_utc_one(USEC_INFINITY, NULL);
 471 }
 472
 473 TEST(deserialize_dual_timestamp) {
 474         int r;
 475         dual_timestamp t;
 476
 477         r = deserialize_dual_timestamp("1234 5678", &t);
 478         assert_se(r == 0);
 479         assert_se(t.realtime == 1234);
 480         assert_se(t.monotonic == 5678);
 481
 482         r = deserialize_dual_timestamp("1234x 5678", &t);
 483         assert_se(r == -EINVAL);
 484
 485         r = deserialize_dual_timestamp("1234 5678y", &t);
 486         assert_se(r == -EINVAL);
 487
 488         r = deserialize_dual_timestamp("-1234 5678", &t);
 489         assert_se(r == -EINVAL);
 490
 491         r = deserialize_dual_timestamp("1234 -5678", &t);
 492         assert_se(r == -EINVAL);
 493
 494         /* Check that output wasn't modified. */
 495         assert_se(t.realtime == 1234);
 496         assert_se(t.monotonic == 5678);
 497
 498         r = deserialize_dual_timestamp("+123 567", &t);
 499         assert_se(r == 0);
 500         assert_se(t.realtime == 123);
 501         assert_se(t.monotonic == 567);
 502
 503         /* Check that we get "infinity" on overflow. */
 504         r = deserialize_dual_timestamp("18446744073709551617 0", &t);
 505         assert_se(r == 0);
 506         assert_se(t.realtime == USEC_INFINITY);
 507         assert_se(t.monotonic == 0);
 508 }
 509
 510 static void assert_similar(usec_t a, usec_t b) {
 511         usec_t d;
 512
 513         if (a > b)
 514                 d = a - b;
 515         else
 516                 d = b - a;
 517
 518         assert_se(d < 10*USEC_PER_SEC);
 519 }
 520
 521 TEST(usec_shift_clock) {
 522         usec_t rt, mn, bt;
 523
 524         rt = now(CLOCK_REALTIME);
 525         mn = now(CLOCK_MONOTONIC);
 526         bt = now(clock_boottime_or_monotonic());
 527
 528         assert_se(usec_shift_clock(USEC_INFINITY, CLOCK_REALTIME, CLOCK_MONOTONIC) == USEC_INFINITY);
 529
 530         assert_similar(usec_shift_clock(rt + USEC_PER_HOUR, CLOCK_REALTIME, CLOCK_MONOTONIC), mn + USEC_PER_HOUR);
 531         assert_similar(usec_shift_clock(rt + 2*USEC_PER_HOUR, CLOCK_REALTIME, clock_boottime_or_monotonic()), bt + 2*USEC_PER_HOUR);
 532         assert_se(usec_shift_clock(rt + 3*USEC_PER_HOUR, CLOCK_REALTIME, CLOCK_REALTIME_ALARM) == rt + 3*USEC_PER_HOUR);
 533
 534         assert_similar(usec_shift_clock(mn + 4*USEC_PER_HOUR, CLOCK_MONOTONIC, CLOCK_REALTIME_ALARM), rt + 4*USEC_PER_HOUR);
 535         assert_similar(usec_shift_clock(mn + 5*USEC_PER_HOUR, CLOCK_MONOTONIC, clock_boottime_or_monotonic()), bt + 5*USEC_PER_HOUR);
 536         assert_se(usec_shift_clock(mn + 6*USEC_PER_HOUR, CLOCK_MONOTONIC, CLOCK_MONOTONIC) == mn + 6*USEC_PER_HOUR);
 537
 538         assert_similar(usec_shift_clock(bt + 7*USEC_PER_HOUR, clock_boottime_or_monotonic(), CLOCK_MONOTONIC), mn + 7*USEC_PER_HOUR);
 539         assert_similar(usec_shift_clock(bt + 8*USEC_PER_HOUR, clock_boottime_or_monotonic(), CLOCK_REALTIME_ALARM), rt + 8*USEC_PER_HOUR);
 540         assert_se(usec_shift_clock(bt + 9*USEC_PER_HOUR, clock_boottime_or_monotonic(), clock_boottime_or_monotonic()) == bt + 9*USEC_PER_HOUR);
 541
 542         if (mn > USEC_PER_MINUTE) {
 543                 assert_similar(usec_shift_clock(rt - 30 * USEC_PER_SEC, CLOCK_REALTIME_ALARM, CLOCK_MONOTONIC), mn - 30 * USEC_PER_SEC);
 544                 assert_similar(usec_shift_clock(rt - 50 * USEC_PER_SEC, CLOCK_REALTIME, clock_boottime_or_monotonic()), bt - 50 * USEC_PER_SEC);
 545         }
 546 }
 547
 548 TEST(in_utc_timezone) {
 549         const char *tz = getenv("TZ");
 550
 551         assert_se(setenv("TZ", ":UTC", 1) >= 0);
 552         assert_se(in_utc_timezone());
 553         assert_se(streq(tzname[0], "UTC"));
 554         assert_se(streq(tzname[1], "UTC"));
 555         assert_se(timezone == 0);
 556         assert_se(daylight == 0);
 557
 558         assert_se(setenv("TZ", ":Europe/Berlin", 1) >= 0);
 559         assert_se(!in_utc_timezone());
 560         assert_se(streq(tzname[0], "CET"));
 561         assert_se(streq(tzname[1], "CEST"));
 562
 563         assert_se(set_unset_env("TZ", tz, true) == 0);
 564         tzset();
 565 }
 566
 567 TEST(map_clock_usec) {
 568         usec_t nowr, x, y, z;
 569
 570         x = nowr = now(CLOCK_REALTIME); /* right now */
 571         y = map_clock_usec(x, CLOCK_REALTIME, CLOCK_MONOTONIC);
 572         z = map_clock_usec(y, CLOCK_MONOTONIC, CLOCK_REALTIME);
 573         /* Converting forth and back will introduce inaccuracies, since we cannot query both clocks atomically, but it should be small. Even on the slowest CI smaller than 1h */
 574
 575         assert_se((z > x ? z - x : x - z) < USEC_PER_HOUR);
 576
 577         assert_se(nowr < USEC_INFINITY - USEC_PER_DAY*7); /* overflow check */
 578         x = nowr + USEC_PER_DAY*7; /* 1 week from now */
 579         y = map_clock_usec(x, CLOCK_REALTIME, CLOCK_MONOTONIC);
 580         assert_se(y > 0 && y < USEC_INFINITY);
 581         z = map_clock_usec(y, CLOCK_MONOTONIC, CLOCK_REALTIME);
 582         assert_se(z > 0 && z < USEC_INFINITY);
 583         assert_se((z > x ? z - x : x - z) < USEC_PER_HOUR);
 584
 585         assert_se(nowr > USEC_PER_DAY * 7); /* underflow check */
 586         x = nowr - USEC_PER_DAY*7; /* 1 week ago */
 587         y = map_clock_usec(x, CLOCK_REALTIME, CLOCK_MONOTONIC);
 588         if (y != 0) { /* might underflow if machine is not up long enough for the monotonic clock to be beyond 1w */
 589                 assert_se(y < USEC_INFINITY);
 590                 z = map_clock_usec(y, CLOCK_MONOTONIC, CLOCK_REALTIME);
 591                 assert_se(z > 0 && z < USEC_INFINITY);
 592                 assert_se((z > x ? z - x : x - z) < USEC_PER_HOUR);
 593         }
 594 }
 595
 596 static int intro(void) {
 597         log_info("realtime=" USEC_FMT "\n"
 598                  "monotonic=" USEC_FMT "\n"
 599                  "boottime=" USEC_FMT "\n",
 600                  now(CLOCK_REALTIME),
 601                  now(CLOCK_MONOTONIC),
 602                  now(clock_boottime_or_monotonic()));
 603
 604         /* Ensure time_t is signed */
 605         assert_cc((time_t) -1 < (time_t) 1);
 606
 607         /* Ensure TIME_T_MAX works correctly */
 608         uintmax_t x = TIME_T_MAX;
 609         x++;
 610         assert_se((time_t) x < 0);
 611
 612         return EXIT_SUCCESS;
 613 }
 614
 615 DEFINE_TEST_MAIN_WITH_INTRO(LOG_INFO, intro);