glib/tests/test-printf.c

   1 /* Unit tests for gprintf
   2  * Copyright (C) 1995-1997  Peter Mattis, Spencer Kimball and Josh MacDonald
   3  *
   4  * This work is provided "as is"; redistribution and modification
   5  * in whole or in part, in any medium, physical or electronic is
   6  * permitted without restriction.
   7  *
   8  * This work is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  11  *
  12  * In no event shall the authors or contributors be liable for any
  13  * direct, indirect, incidental, special, exemplary, or consequential
  14  * damages (including, but not limited to, procurement of substitute
  15  * goods or services; loss of use, data, or profits; or business
  16  * interruption) however caused and on any theory of liability, whether
  17  * in contract, strict liability, or tort (including negligence or
  18  * otherwise) arising in any way out of the use of this software, even
  19  * if advised of the possibility of such damage.
  20  */
  21
  22 #include <stdlib.h>
  23 #include <stdio.h>
  24 #include <string.h>
  25 #include "glib.h"
  26 #include "gstdio.h"
  27 #ifdef G_OS_WIN32
  28 #include <io.h>
  29 #include <fcntl.h>
  30 #endif
  31
  32 static void
  33 test_retval_and_trunc (void)
  34 {
  35   gchar buf[128];
  36   gint res;
  37
  38   res = g_snprintf (buf, 0, "abc");
  39   g_assert_cmpint (res, ==, 3);
  40
  41   res = g_snprintf (NULL, 0, "abc");
  42   g_assert_cmpint (res, ==, 3);
  43
  44   res = g_snprintf (buf, 5, "abc");
  45   g_assert_cmpint (res, ==, 3);
  46
  47   res = g_snprintf (buf, 1, "abc");
  48   g_assert_cmpint (res, ==, 3);
  49   g_assert (buf[0] == '\0');
  50   g_assert_cmpstr (buf, ==, "");
  51
  52   res = g_snprintf (buf, 2, "abc");
  53   g_assert_cmpint (res, ==, 3);
  54   g_assert (buf[1] == '\0');
  55   g_assert_cmpstr (buf, ==, "a");
  56
  57   res = g_snprintf (buf, 3, "abc");
  58   g_assert_cmpint (res, ==, 3);
  59   g_assert (buf[2] == '\0');
  60   g_assert_cmpstr (buf, ==, "ab");
  61
  62   res = g_snprintf (buf, 4, "abc");
  63   g_assert_cmpint (res, ==, 3);
  64   g_assert (buf[3] == '\0');
  65   g_assert_cmpstr (buf, ==, "abc");
  66
  67   res = g_snprintf (buf, 5, "abc");
  68   g_assert_cmpint (res, ==, 3);
  69   g_assert (buf[3] == '\0');
  70   g_assert_cmpstr (buf, ==, "abc");
  71 }
  72
  73 static void
  74 test_d (void)
  75 {
  76   gchar buf[128];
  77   gint res;
  78
  79   /* %d basic formatting */
  80
  81   res = g_snprintf (buf, 128, "%d", 5);
  82   g_assert_cmpint (res, ==, 1);
  83   g_assert_cmpstr (buf, ==, "5");
  84
  85   res = g_snprintf (buf, 128, "%d", 0);
  86   g_assert_cmpint (res, ==, 1);
  87   g_assert_cmpstr (buf, ==, "0");
  88
  89   res = g_snprintf (buf, 128, "%.0d", 0);
  90   g_assert_cmpint (res, ==, 0);
  91   g_assert_cmpstr (buf, ==, "");
  92
  93   res = g_snprintf (buf, 128, "%.0d", 1);
  94   g_assert_cmpint (res, ==, 1);
  95   g_assert_cmpstr (buf, ==, "1");
  96
  97   res = g_snprintf (buf, 128, "%.d", 2);
  98   g_assert_cmpint (res, ==, 1);
  99   g_assert_cmpstr (buf, ==, "2");
 100
 101   res = g_snprintf (buf, 128, "%d", -1);
 102   g_assert_cmpint (res, ==, 2);
 103   g_assert_cmpstr (buf, ==, "-1");
 104
 105   res = g_snprintf (buf, 128, "%.3d", 5);
 106   g_assert_cmpint (res, ==, 3);
 107   g_assert_cmpstr (buf, ==, "005");
 108
 109   res = g_snprintf (buf, 128, "%.3d", -5);
 110   g_assert_cmpint (res, ==, 4);
 111   g_assert_cmpstr (buf, ==, "-005");
 112
 113   res = g_snprintf (buf, 128, "%5.3d", 5);
 114   g_assert_cmpint (res, ==, 5);
 115   g_assert_cmpstr (buf, ==, "  005");
 116
 117   res = g_snprintf (buf, 128, "%-5.3d", -5);
 118   g_assert_cmpint (res, ==, 5);
 119   g_assert_cmpstr (buf, ==, "-005 ");
 120
 121   /* %d, length modifiers */
 122
 123   res = g_snprintf (buf, 128, "%" G_GINT16_FORMAT, (gint16)-5);
 124   g_assert_cmpint (res, ==, 2);
 125   g_assert_cmpstr (buf, ==, "-5");
 126
 127   res = g_snprintf (buf, 128, "%" G_GUINT16_FORMAT, (guint16)5);
 128   g_assert_cmpint (res, ==, 1);
 129   g_assert_cmpstr (buf, ==, "5");
 130
 131   res = g_snprintf (buf, 128, "%" G_GINT32_FORMAT, (gint32)-5);
 132   g_assert_cmpint (res, ==, 2);
 133   g_assert_cmpstr (buf, ==, "-5");
 134
 135   res = g_snprintf (buf, 128, "%" G_GUINT32_FORMAT, (guint32)5);
 136   g_assert_cmpint (res, ==, 1);
 137   g_assert_cmpstr (buf, ==, "5");
 138
 139   res = g_snprintf (buf, 128, "%" G_GINT64_FORMAT, (gint64)-5);
 140   g_assert_cmpint (res, ==, 2);
 141   g_assert_cmpstr (buf, ==, "-5");
 142
 143   res = g_snprintf (buf, 128, "%" G_GUINT64_FORMAT, (guint64)5);
 144   g_assert_cmpint (res, ==, 1);
 145   g_assert_cmpstr (buf, ==, "5");
 146
 147   res = g_snprintf (buf, 128, "%" G_GSSIZE_FORMAT, (gssize)-5);
 148   g_assert_cmpint (res, ==, 2);
 149   g_assert_cmpstr (buf, ==, "-5");
 150
 151   res = g_snprintf (buf, 128, "%" G_GSIZE_FORMAT, (gsize)5);
 152   g_assert_cmpint (res, ==, 1);
 153   g_assert_cmpstr (buf, ==, "5");
 154
 155   /* %d, flags */
 156
 157   res = g_snprintf (buf, 128, "%-d", 5);
 158   g_assert_cmpint (res, ==, 1);
 159   g_assert_cmpstr (buf, ==, "5");
 160
 161   res = g_snprintf (buf, 128, "%-+d", 5);
 162   g_assert_cmpint (res, ==, 2);
 163   g_assert_cmpstr (buf, ==, "+5");
 164
 165   res = g_snprintf (buf, 128, "%+-d", 5);
 166   g_assert_cmpint (res, ==, 2);
 167   g_assert_cmpstr (buf, ==, "+5");
 168
 169   res = g_snprintf (buf, 128, "%+d", -5);
 170   g_assert_cmpint (res, ==, 2);
 171   g_assert_cmpstr (buf, ==, "-5");
 172
 173   res = g_snprintf (buf, 128, "% d", 5);
 174   g_assert_cmpint (res, ==, 2);
 175   g_assert_cmpstr (buf, ==, " 5");
 176
 177   res = g_snprintf (buf, 128, "% .0d", 0);
 178   g_assert_cmpint (res, ==, 1);
 179   g_assert_cmpstr (buf, ==, " ");
 180
 181   res = g_snprintf (buf, 128, "%03d", 5);
 182   g_assert_cmpint (res, ==, 3);
 183   g_assert_cmpstr (buf, ==, "005");
 184
 185   res = g_snprintf (buf, 128, "%03d", -5);
 186   g_assert_cmpint (res, ==, 3);
 187   g_assert_cmpstr (buf, ==, "-05");
 188 }
 189
 190 /* gcc emits warnings for the following formats, since the C spec
 191  * says some of the flags must be ignored. (The " " in "% +d" and
 192  * the "0" in "%-03d".) But we need to test that our printf gets
 193  * those rules right. So we fool gcc into not warning.
 194  *
 195  * These have to be in a separate function in order to use #pragma.
 196  */
 197 #pragma GCC diagnostic push
 198 #pragma GCC diagnostic ignored "-Wformat-nonliteral"
 199 static void
 200 test_d_invalid (void)
 201 {
 202   const gchar *fmt;
 203   gchar buf[128];
 204   gint res;
 205
 206   fmt = "% +d";
 207   res = g_snprintf (buf, 128, fmt, 5);
 208   g_assert_cmpint (res, ==, 2);
 209   g_assert_cmpstr (buf, ==, "+5");
 210
 211   fmt = "%-03d";
 212   res = g_snprintf (buf, 128, fmt, -5);
 213   g_assert_cmpint (res, ==, 3);
 214   g_assert_cmpstr (buf, ==, "-5 ");
 215 }
 216 #pragma GCC diagnostic pop
 217
 218 static void
 219 test_o (void)
 220 {
 221   gchar buf[128];
 222   gint res;
 223
 224   /* %o basic formatting */
 225
 226   res = g_snprintf (buf, 128, "%o", 5);
 227   g_assert_cmpint (res, ==, 1);
 228   g_assert_cmpstr (buf, ==, "5");
 229
 230   res = g_snprintf (buf, 128, "%o", 8);
 231   g_assert_cmpint (res, ==, 2);
 232   g_assert_cmpstr (buf, ==, "10");
 233
 234   res = g_snprintf (buf, 128, "%o", 0);
 235   g_assert_cmpint (res, ==, 1);
 236   g_assert_cmpstr (buf, ==, "0");
 237
 238   res = g_snprintf (buf, 128, "%.0o", 0);
 239   g_assert_cmpint (res, ==, 0);
 240   g_assert_cmpstr (buf, ==, "");
 241
 242   res = g_snprintf (buf, 128, "%.0o", 1);
 243   g_assert_cmpint (res, ==, 1);
 244   g_assert_cmpstr (buf, ==, "1");
 245
 246   res = g_snprintf (buf, 128, "%.3o", 5);
 247   g_assert_cmpint (res, ==, 3);
 248   g_assert_cmpstr (buf, ==, "005");
 249
 250   res = g_snprintf (buf, 128, "%.3o", 8);
 251   g_assert_cmpint (res, ==, 3);
 252   g_assert_cmpstr (buf, ==, "010");
 253
 254   res = g_snprintf (buf, 128, "%5.3o", 5);
 255   g_assert_cmpint (res, ==, 5);
 256   g_assert_cmpstr (buf, ==, "  005");
 257 }
 258
 259 static void
 260 test_u (void)
 261 {
 262   gchar buf[128];
 263   gint res;
 264
 265   /* %u, basic formatting */
 266
 267   res = g_snprintf (buf, 128, "%u", 5);
 268   g_assert_cmpint (res, ==, 1);
 269   g_assert_cmpstr (buf, ==, "5");
 270
 271   res = g_snprintf (buf, 128, "%u", 0);
 272   g_assert_cmpint (res, ==, 1);
 273   g_assert_cmpstr (buf, ==, "0");
 274
 275   res = g_snprintf (buf, 128, "%.0u", 0);
 276   g_assert_cmpint (res, ==, 0);
 277   g_assert_cmpstr (buf, ==, "");
 278
 279   res = g_snprintf (buf, 128, "%.0u", 1);
 280   g_assert_cmpint (res, ==, 1);
 281   g_assert_cmpstr (buf, ==, "1");
 282
 283   res = g_snprintf (buf, 128, "%.3u", 5);
 284   g_assert_cmpint (res, ==, 3);
 285   g_assert_cmpstr (buf, ==, "005");
 286
 287   res = g_snprintf (buf, 128, "%5.3u", 5);
 288   g_assert_cmpint (res, ==, 5);
 289   g_assert_cmpstr (buf, ==, "  005");
 290 }
 291
 292 static void
 293 test_x (void)
 294 {
 295   gchar buf[128];
 296   gint res;
 297
 298   /* %x, basic formatting */
 299
 300   res = g_snprintf (buf, 128, "%x", 5);
 301   g_assert_cmpint (res, ==, 1);
 302   g_assert_cmpstr (buf, ==, "5");
 303
 304   res = g_snprintf (buf, 128, "%x", 31);
 305   g_assert_cmpint (res, ==, 2);
 306   g_assert_cmpstr (buf, ==, "1f");
 307
 308   res = g_snprintf (buf, 128, "%x", 0);
 309   g_assert_cmpint (res, ==, 1);
 310   g_assert_cmpstr (buf, ==, "0");
 311
 312   res = g_snprintf (buf, 128, "%.0x", 0);
 313   g_assert_cmpint (res, ==, 0);
 314   g_assert_cmpstr (buf, ==, "");
 315
 316   res = g_snprintf (buf, 128, "%.0x", 1);
 317   g_assert_cmpint (res, ==, 1);
 318   g_assert_cmpstr (buf, ==, "1");
 319
 320   res = g_snprintf (buf, 128, "%.3x", 5);
 321   g_assert_cmpint (res, ==, 3);
 322   g_assert_cmpstr (buf, ==, "005");
 323
 324   res = g_snprintf (buf, 128, "%.3x", 31);
 325   g_assert_cmpint (res, ==, 3);
 326   g_assert_cmpstr (buf, ==, "01f");
 327
 328   res = g_snprintf (buf, 128, "%5.3x", 5);
 329   g_assert_cmpint (res, ==, 5);
 330   g_assert_cmpstr (buf, ==, "  005");
 331
 332   /* %x, flags */
 333
 334   res = g_snprintf (buf, 128, "%-x", 5);
 335   g_assert_cmpint (res, ==, 1);
 336   g_assert_cmpstr (buf, ==, "5");
 337
 338   res = g_snprintf (buf, 128, "%03x", 5);
 339   g_assert_cmpint (res, ==, 3);
 340   g_assert_cmpstr (buf, ==, "005");
 341
 342   res = g_snprintf (buf, 128, "%#x", 31);
 343   g_assert_cmpint (res, ==, 4);
 344   g_assert_cmpstr (buf, ==, "0x1f");
 345
 346   res = g_snprintf (buf, 128, "%#x", 0);
 347   g_assert_cmpint (res, ==, 1);
 348   g_assert_cmpstr (buf, ==, "0");
 349 }
 350
 351 static void
 352 test_X (void)
 353 {
 354   gchar buf[128];
 355   gint res;
 356
 357   /* %X, basic formatting */
 358
 359   res = g_snprintf (buf, 128, "%X", 5);
 360   g_assert_cmpint (res, ==, 1);
 361   g_assert_cmpstr (buf, ==, "5");
 362
 363   res = g_snprintf (buf, 128, "%X", 31);
 364   g_assert_cmpint (res, ==, 2);
 365   g_assert_cmpstr (buf, ==, "1F");
 366
 367   res = g_snprintf (buf, 128, "%X", 0);
 368   g_assert_cmpint (res, ==, 1);
 369   g_assert_cmpstr (buf, ==, "0");
 370
 371   res = g_snprintf (buf, 128, "%.0X", 0);
 372   g_assert_cmpint (res, ==, 0);
 373   g_assert_cmpstr (buf, ==, "");
 374
 375   res = g_snprintf (buf, 128, "%.0X", 1);
 376   g_assert_cmpint (res, ==, 1);
 377   g_assert_cmpstr (buf, ==, "1");
 378
 379   res = g_snprintf (buf, 128, "%.3X", 5);
 380   g_assert_cmpint (res, ==, 3);
 381   g_assert_cmpstr (buf, ==, "005");
 382
 383   res = g_snprintf (buf, 128, "%.3X", 31);
 384   g_assert_cmpint (res, ==, 3);
 385   g_assert_cmpstr (buf, ==, "01F");
 386
 387   res = g_snprintf (buf, 128, "%5.3X", 5);
 388   g_assert_cmpint (res, ==, 5);
 389   g_assert_cmpstr (buf, ==, "  005");
 390
 391   /* %X, flags */
 392
 393   res = g_snprintf (buf, 128, "%-X", 5);
 394   g_assert_cmpint (res, ==, 1);
 395   g_assert_cmpstr (buf, ==, "5");
 396
 397   res = g_snprintf (buf, 128, "%03X", 5);
 398   g_assert_cmpint (res, ==, 3);
 399   g_assert_cmpstr (buf, ==, "005");
 400
 401   res = g_snprintf (buf, 128, "%#X", 31);
 402   g_assert_cmpint (res, ==, 4);
 403   g_assert_cmpstr (buf, ==, "0X1F");
 404
 405   res = g_snprintf (buf, 128, "%#X", 0);
 406   g_assert_cmpint (res, ==, 1);
 407   g_assert_cmpstr (buf, ==, "0");
 408 }
 409
 410 static void
 411 test_f (void)
 412 {
 413   gchar buf[128];
 414   gint res;
 415
 416   /* %f, basic formattting */
 417
 418   res = g_snprintf (buf, 128, "%f", G_PI);
 419   g_assert_cmpint (res, ==, 8);
 420   g_assert (0 == strncmp (buf, "3.14159", 7));
 421
 422   res = g_snprintf (buf, 128, "%.8f", G_PI);
 423   g_assert_cmpint (res, ==, 10);
 424   g_assert (0 == strncmp (buf, "3.1415926", 9));
 425
 426   res = g_snprintf (buf, 128, "%.0f", G_PI);
 427   g_assert_cmpint (res, ==, 1);
 428   g_assert_cmpstr (buf, ==, "3");
 429
 430   res = g_snprintf (buf, 128, "%1.f", G_PI);
 431   g_assert_cmpint (res, ==, 1);
 432   g_assert_cmpstr (buf, ==, "3");
 433
 434   res = g_snprintf (buf, 128, "%3.f", G_PI);
 435   g_assert_cmpint (res, ==, 3);
 436   g_assert_cmpstr (buf, ==, "  3");
 437
 438   /* %f, flags */
 439
 440   res = g_snprintf (buf, 128, "%+f", G_PI);
 441   g_assert_cmpint (res, ==, 9);
 442   g_assert (0 == strncmp (buf, "+3.14159", 8));
 443
 444   res = g_snprintf (buf, 128, "% f", G_PI);
 445   g_assert_cmpint (res, ==, 9);
 446   g_assert (0 == strncmp (buf, " 3.14159", 8));
 447
 448   res = g_snprintf (buf, 128, "%#.0f", G_PI);
 449   g_assert_cmpint (res, ==, 2);
 450   g_assert_cmpstr (buf, ==, "3.");
 451
 452   res = g_snprintf (buf, 128, "%05.2f", G_PI);
 453   g_assert_cmpint (res, ==, 5);
 454   g_assert_cmpstr (buf, ==, "03.14");
 455 }
 456
 457 static gboolean
 458 same_value (const gchar *actual,
 459             const gchar *expected)
 460 {
 461   gdouble actual_value, expected_value;
 462
 463   actual_value = g_ascii_strtod (actual, NULL);
 464   expected_value = g_ascii_strtod (expected, NULL);
 465
 466   return actual_value == expected_value;
 467 }
 468
 469 static void
 470 test_e (void)
 471 {
 472   gchar buf[128];
 473   gint res;
 474
 475   /* %e, basic formatting */
 476   /* for %e we can't expect to reproduce exact strings and lengths, since SUS
 477    * only guarantees that the exponent shall always contain at least two
 478    * digits. On Windows, it seems to be at least three digits long.
 479    * Therefore, we compare the results of parsing the expected result and the
 480    * actual result.
 481    */
 482
 483   res = g_snprintf (buf, 128, "%e", G_PI);
 484   g_assert_cmpint (res, >=, 12);
 485   g_assert (same_value (buf, "3.141593e+00"));
 486
 487   res = g_snprintf (buf, 128, "%.8e", G_PI);
 488   g_assert_cmpint (res, >=, 14);
 489   g_assert (same_value (buf, "3.14159265e+00"));
 490
 491   res = g_snprintf (buf, 128, "%.0e", G_PI);
 492   g_assert_cmpint (res, >=, 5);
 493   g_assert (same_value (buf, "3e+00"));
 494
 495   res = g_snprintf (buf, 128, "%.1e", 0.0);
 496   g_assert_cmpint (res, >=, 7);
 497   g_assert (same_value (buf, "0.0e+00"));
 498
 499   res = g_snprintf (buf, 128, "%.1e", 0.00001);
 500   g_assert_cmpint (res, >=, 7);
 501   g_assert (same_value (buf, "1.0e-05"));
 502
 503   res = g_snprintf (buf, 128, "%.1e", 10000.0);
 504   g_assert_cmpint (res, >=, 7);
 505   g_assert (same_value (buf, "1.0e+04"));
 506
 507   /* %e, flags */
 508
 509   res = g_snprintf (buf, 128, "%+e", G_PI);
 510   g_assert_cmpint (res, >=, 13);
 511   g_assert (same_value (buf, "+3.141593e+00"));
 512
 513   res = g_snprintf (buf, 128, "% e", G_PI);
 514   g_assert_cmpint (res, >=, 13);
 515   g_assert (same_value (buf, " 3.141593e+00"));
 516
 517   res = g_snprintf (buf, 128, "%#.0e", G_PI);
 518   g_assert_cmpint (res, >=, 6);
 519   g_assert (same_value (buf, "3.e+00"));
 520
 521   res = g_snprintf (buf, 128, "%09.2e", G_PI);
 522   g_assert_cmpint (res, >=, 9);
 523   g_assert (same_value (buf, "03.14e+00"));
 524 }
 525
 526 static void
 527 test_c (void)
 528 {
 529   gchar buf[128];
 530   gint res;
 531
 532   res = g_snprintf (buf, 128, "%c", 'a');
 533   g_assert_cmpint (res, ==, 1);
 534   g_assert_cmpstr (buf, ==, "a");
 535 }
 536
 537 static void
 538 test_s (void)
 539 {
 540   gchar buf[128];
 541   gint res;
 542
 543   res = g_snprintf (buf, 128, "%.2s", "abc");
 544   g_assert_cmpint (res, ==, 2);
 545   g_assert_cmpstr (buf, ==, "ab");
 546
 547   res = g_snprintf (buf, 128, "%.6s", "abc");
 548   g_assert_cmpint (res, ==, 3);
 549   g_assert_cmpstr (buf, ==, "abc");
 550
 551   res = g_snprintf (buf, 128, "%5s", "abc");
 552   g_assert_cmpint (res, ==, 5);
 553   g_assert_cmpstr (buf, ==, "  abc");
 554
 555   res = g_snprintf (buf, 128, "%-5s", "abc");
 556   g_assert_cmpint (res, ==, 5);
 557   g_assert_cmpstr (buf, ==, "abc  ");
 558
 559   res = g_snprintf (buf, 128, "%5.2s", "abc");
 560   g_assert_cmpint (res, ==, 5);
 561   g_assert_cmpstr (buf, ==, "   ab");
 562
 563   res = g_snprintf (buf, 128, "%*s", 5, "abc");
 564   g_assert_cmpint (res, ==, 5);
 565   g_assert_cmpstr (buf, ==, "  abc");
 566
 567   res = g_snprintf (buf, 128, "%*s", -5, "abc");
 568   g_assert_cmpint (res, ==, 5);
 569   g_assert_cmpstr (buf, ==, "abc  ");
 570
 571   res = g_snprintf (buf, 128, "%*.*s", 5, 2, "abc");
 572   g_assert_cmpint (res, ==, 5);
 573   g_assert_cmpstr (buf, ==, "   ab");
 574 }
 575
 576 static void
 577 test_n (void)
 578 {
 579   gchar buf[128];
 580   gint res;
 581   gint i;
 582   glong l;
 583
 584   res = g_snprintf (buf, 128, "abc%n", &i);
 585   g_assert_cmpint (res, ==, 3);
 586   g_assert_cmpstr (buf, ==, "abc");
 587   g_assert_cmpint (i, ==, 3);
 588
 589   res = g_snprintf (buf, 128, "abc%ln", &l);
 590   g_assert_cmpint (res, ==, 3);
 591   g_assert_cmpstr (buf, ==, "abc");
 592   g_assert_cmpint (l, ==, 3);
 593 }
 594
 595 static void
 596 test_percent (void)
 597 {
 598   gchar buf[128];
 599   gint res;
 600
 601   res = g_snprintf (buf, 128, "%%");
 602   g_assert_cmpint (res, ==, 1);
 603   g_assert_cmpstr (buf, ==, "%");
 604 }
 605
 606 static void
 607 test_positional_params (void)
 608 {
 609   gchar buf[128];
 610   gint res;
 611
 612   res = g_snprintf (buf, 128, "%2$c %1$c", 'b', 'a');
 613   g_assert_cmpint (res, ==, 3);
 614   g_assert_cmpstr (buf, ==, "a b");
 615
 616   res = g_snprintf (buf, 128, "%1$*2$.*3$s", "abc", 5, 2);
 617   g_assert_cmpint (res, ==, 5);
 618   g_assert_cmpstr (buf, ==, "   ab");
 619
 620   res = g_snprintf (buf, 128, "%1$s%1$s", "abc");
 621   g_assert_cmpint (res, ==, 6);
 622   g_assert_cmpstr (buf, ==, "abcabc");
 623 }
 624
 625 static void
 626 test_positional_params2 (void)
 627 {
 628   if (g_test_subprocess ())
 629     {
 630       gint res;
 631
 632       res = g_printf ("%2$c %1$c\n", 'b', 'a');
 633       g_assert_cmpint (res, ==, 4);
 634
 635       res = g_printf ("%1$*2$.*3$s\n", "abc", 5, 2);
 636       g_assert_cmpint (res, ==, 6);
 637
 638       res = g_printf ("%1$s%1$s\n", "abc");
 639       g_assert_cmpint (res, ==, 7);
 640       return;
 641     }
 642   g_test_trap_subprocess (NULL, 0, 0);
 643   g_test_trap_assert_passed ();
 644   g_test_trap_assert_stdout ("a b\n   ab\nabcabc\n");
 645 }
 646
 647 static void
 648 test_positional_params3 (void)
 649 {
 650   gchar buf[128];
 651   gint res;
 652
 653   res = g_sprintf (buf, "%2$c %1$c", 'b', 'a');
 654   g_assert_cmpint (res, ==, 3);
 655   g_assert_cmpstr (buf, ==, "a b");
 656
 657   res = g_sprintf (buf, "%1$*2$.*3$s", "abc", 5, 2);
 658   g_assert_cmpint (res, ==, 5);
 659   g_assert_cmpstr (buf, ==, "   ab");
 660
 661   res = g_sprintf (buf, "%1$s%1$s", "abc");
 662   g_assert_cmpint (res, ==, 6);
 663   g_assert_cmpstr (buf, ==, "abcabc");
 664 }
 665
 666 static void
 667 test_percent2 (void)
 668 {
 669   if (g_test_subprocess ())
 670     {
 671       gint res;
 672
 673       res = g_printf ("%%");
 674       g_assert_cmpint (res, ==, 1);
 675       return;
 676     }
 677   g_test_trap_subprocess (NULL, 0, 0);
 678   g_test_trap_assert_passed ();
 679   g_test_trap_assert_stdout ("*%*");
 680 }
 681
 682 static void
 683 test_64bit (void)
 684 {
 685   gchar buf[128];
 686   gint res;
 687
 688   res = g_snprintf (buf, 128, "%" G_GINT64_FORMAT, (gint64)123456);
 689   g_assert_cmpint (res, ==, 6);
 690   g_assert_cmpstr (buf, ==, "123456");
 691
 692   res = g_snprintf (buf, 128, "%" G_GINT64_FORMAT, (gint64)-123456);
 693   g_assert_cmpint (res, ==, 7);
 694   g_assert_cmpstr (buf, ==, "-123456");
 695
 696   res = g_snprintf (buf, 128, "%" G_GUINT64_FORMAT, (guint64)123456);
 697   g_assert_cmpint (res, ==, 6);
 698   g_assert_cmpstr (buf, ==, "123456");
 699
 700   res = g_snprintf (buf, 128, "%" G_GINT64_MODIFIER "o", (gint64)123456);
 701   g_assert_cmpint (res, ==, 6);
 702   g_assert_cmpstr (buf, ==, "361100");
 703
 704   res = g_snprintf (buf, 128, "%#" G_GINT64_MODIFIER "o", (gint64)123456);
 705   g_assert_cmpint (res, ==, 7);
 706   g_assert_cmpstr (buf, ==, "0361100");
 707
 708   res = g_snprintf (buf, 128, "%" G_GINT64_MODIFIER "x", (gint64)123456);
 709   g_assert_cmpint (res, ==, 5);
 710   g_assert_cmpstr (buf, ==, "1e240");
 711
 712   res = g_snprintf (buf, 128, "%#" G_GINT64_MODIFIER "x", (gint64)123456);
 713   g_assert_cmpint (res, ==, 7);
 714   g_assert_cmpstr (buf, ==, "0x1e240");
 715
 716   res = g_snprintf (buf, 128, "%" G_GINT64_MODIFIER "X", (gint64)123456);
 717   g_assert_cmpint (res, ==, 5);
 718   g_assert_cmpstr (buf, ==, "1E240");
 719
 720 #ifdef G_OS_WIN32
 721   /* On Win32, test that the "ll" modifier also works, for backward
 722    * compatibility. One really should use the G_GINT64_MODIFIER (which
 723    * on Win32 is the "I64" that the (msvcrt) C library's printf uses),
 724    * but "ll" used to work with the "trio" g_printf implementation in
 725    * GLib 2.2, so it's best if it continues to work.
 726    */
 727
 728   /* However, gcc doesn't know about this, so we need to disable printf
 729    * format warnings...
 730    */
 731 #if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)
 732 _Pragma ("GCC diagnostic push")
 733 _Pragma ("GCC diagnostic ignored \"-Wformat\"")
 734 _Pragma ("GCC diagnostic ignored \"-Wformat-extra-args\"")
 735 #endif
 736
 737   res = g_snprintf (buf, 128, "%" "lli", (gint64)123456);
 738   g_assert_cmpint (res, ==, 6);
 739   g_assert_cmpstr (buf, ==, "123456");
 740
 741   res = g_snprintf (buf, 128, "%" "lli", (gint64)-123456);
 742   g_assert_cmpint (res, ==, 7);
 743   g_assert_cmpstr (buf, ==, "-123456");
 744
 745   res = g_snprintf (buf, 128, "%" "llu", (guint64)123456);
 746   g_assert_cmpint (res, ==, 6);
 747   g_assert_cmpstr (buf, ==, "123456");
 748
 749   res = g_snprintf (buf, 128, "%" "ll" "o", (gint64)123456);
 750   g_assert_cmpint (res, ==, 6);
 751   g_assert_cmpstr (buf, ==, "361100");
 752
 753   res = g_snprintf (buf, 128, "%#" "ll" "o", (gint64)123456);
 754   g_assert_cmpint (res, ==, 7);
 755   g_assert_cmpstr (buf, ==, "0361100");
 756
 757   res = g_snprintf (buf, 128, "%" "ll" "x", (gint64)123456);
 758   g_assert_cmpint (res, ==, 5);
 759   g_assert_cmpstr (buf, ==, "1e240");
 760
 761   res = g_snprintf (buf, 128, "%#" "ll" "x", (gint64)123456);
 762   g_assert_cmpint (res, ==, 7);
 763   g_assert_cmpstr (buf, ==, "0x1e240");
 764
 765   res = g_snprintf (buf, 128, "%" "ll" "X", (gint64)123456);
 766   g_assert_cmpint (res, ==, 5);
 767   g_assert_cmpstr (buf, ==, "1E240");
 768
 769 #if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)
 770 _Pragma ("GCC diagnostic pop")
 771 #endif
 772
 773 #endif
 774 }
 775
 776 static void
 777 test_64bit2_base (void)
 778 {
 779   gint res;
 780
 781   res = g_printf ("%" G_GINT64_FORMAT "\n", (gint64)123456);
 782   g_assert_cmpint (res, ==, 7);
 783
 784   res = g_printf ("%" G_GINT64_FORMAT "\n", (gint64)-123456);
 785   g_assert_cmpint (res, ==, 8);
 786
 787   res = g_printf ("%" G_GUINT64_FORMAT "\n", (guint64)123456);
 788   g_assert_cmpint (res, ==, 7);
 789
 790   res = g_printf ("%" G_GINT64_MODIFIER "o\n", (gint64)123456);
 791   g_assert_cmpint (res, ==, 7);
 792
 793   res = g_printf ("%#" G_GINT64_MODIFIER "o\n", (gint64)123456);
 794   g_assert_cmpint (res, ==, 8);
 795
 796   res = g_printf ("%" G_GINT64_MODIFIER "x\n", (gint64)123456);
 797   g_assert_cmpint (res, ==, 6);
 798
 799   res = g_printf ("%#" G_GINT64_MODIFIER "x\n", (gint64)123456);
 800   g_assert_cmpint (res, ==, 8);
 801
 802   res = g_printf ("%" G_GINT64_MODIFIER "X\n", (gint64)123456);
 803   g_assert_cmpint (res, ==, 6);
 804 }
 805
 806 #ifdef G_OS_WIN32
 807 static void
 808 test_64bit2_win32 (void)
 809 {
 810   gint res;
 811
 812   /* On Win32, test that the "ll" modifier also works, for backward
 813    * compatibility. One really should use the G_GINT64_MODIFIER (which
 814    * on Win32 is the "I64" that the (msvcrt) C library's printf uses),
 815    * but "ll" used to work with the "trio" g_printf implementation in
 816    * GLib 2.2, so it's best if it continues to work.
 817    */
 818
 819   /* However, gcc doesn't know about this, so we need to disable printf
 820    * format warnings...
 821    */
 822 #if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)
 823 _Pragma ("GCC diagnostic push")
 824 _Pragma ("GCC diagnostic ignored \"-Wformat\"")
 825 _Pragma ("GCC diagnostic ignored \"-Wformat-extra-args\"")
 826 #endif
 827
 828   res = g_printf ("%" "lli\n", (gint64)123456);
 829   g_assert_cmpint (res, ==, 7);
 830
 831   res = g_printf ("%" "lli\n", (gint64)-123456);
 832   g_assert_cmpint (res, ==, 8);
 833
 834   res = g_printf ("%" "llu\n", (guint64)123456);
 835   g_assert_cmpint (res, ==, 7);
 836
 837   res = g_printf ("%" "ll" "o\n", (gint64)123456);
 838   g_assert_cmpint (res, ==, 7);
 839
 840   res = g_printf ("%#" "ll" "o\n", (gint64)123456);
 841   g_assert_cmpint (res, ==, 8);
 842
 843   res = g_printf ("%" "ll" "x\n", (gint64)123456);
 844   g_assert_cmpint (res, ==, 6);
 845
 846   res = g_printf ("%#" "ll" "x\n", (gint64)123456);
 847   g_assert_cmpint (res, ==, 8);
 848
 849   res = g_printf ("%" "ll" "X\n", (gint64)123456);
 850   g_assert_cmpint (res, ==, 6);
 851
 852 #if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)
 853 _Pragma ("GCC diagnostic pop")
 854 #endif
 855 }
 856 #endif
 857
 858 static void
 859 test_64bit2 (void)
 860 {
 861   g_test_trap_subprocess ("/printf/test-64bit/subprocess/base", 0, 0);
 862   g_test_trap_assert_passed ();
 863   g_test_trap_assert_stdout ("123456\n-123456\n123456\n"
 864                              "361100\n0361100\n1e240\n"
 865                              "0x1e240\n1E240\n");
 866 #ifdef G_OS_WIN32
 867   g_test_trap_subprocess ("/printf/test-64bit/subprocess/win32", 0, 0);
 868   g_test_trap_assert_passed ();
 869   g_test_trap_assert_stdout ("123456\n-123456\n123456\n"
 870                              "361100\n0361100\n1e240\n"
 871                              "0x1e240\n1E240\n");
 872 #endif
 873 }
 874
 875 G_GNUC_PRINTF(1, 2)
 876 static gsize
 877 upper_bound (const gchar *format, ...)
 878 {
 879   va_list args;
 880   gsize res;
 881
 882   va_start (args, format);
 883   res = g_printf_string_upper_bound (format, args);
 884   va_end (args);
 885
 886   return res;
 887 }
 888
 889 static void
 890 test_upper_bound (void)
 891 {
 892   gsize res;
 893
 894   res = upper_bound ("bla %s %d: %g\n", "bla", 123, 0.123);
 895   g_assert_cmpint (res, ==, 20);
 896 }
 897
 898 int
 899 main (int   argc,
 900       char *argv[])
 901 {
 902 #ifdef G_OS_WIN32
 903   /* Ensure binary mode for stdout, this way
 904    * tests produce \n line endings on Windows instead of the
 905    * default \r\n.
 906    */
 907   _setmode (fileno (stdout), _O_BINARY);
 908 #endif
 909   g_test_init (&argc, &argv, NULL);
 910
 911   g_test_add_func ("/snprintf/retval-and-trunc", test_retval_and_trunc);
 912   g_test_add_func ("/snprintf/%d", test_d);
 913   g_test_add_func ("/snprintf/%d-invalid", test_d_invalid);
 914   g_test_add_func ("/snprintf/%o", test_o);
 915   g_test_add_func ("/snprintf/%u", test_u);
 916   g_test_add_func ("/snprintf/%x", test_x);
 917   g_test_add_func ("/snprintf/%X", test_X);
 918   g_test_add_func ("/snprintf/%f", test_f);
 919   g_test_add_func ("/snprintf/%e", test_e);
 920   g_test_add_func ("/snprintf/%c", test_c);
 921   g_test_add_func ("/snprintf/%s", test_s);
 922   g_test_add_func ("/snprintf/%n", test_n);
 923   g_test_add_func ("/snprintf/test-percent", test_percent);
 924   g_test_add_func ("/snprintf/test-positional-params", test_positional_params);
 925   g_test_add_func ("/snprintf/test-64bit", test_64bit);
 926
 927   g_test_add_func ("/printf/test-percent", test_percent2);
 928   g_test_add_func ("/printf/test-positional-params", test_positional_params2);
 929   g_test_add_func ("/printf/test-64bit", test_64bit2);
 930   g_test_add_func ("/printf/test-64bit/subprocess/base", test_64bit2_base);
 931 #ifdef G_OS_WIN32
 932   g_test_add_func ("/printf/test-64bit/subprocess/win32", test_64bit2_win32);
 933 #endif
 934
 935   g_test_add_func ("/sprintf/test-positional-params", test_positional_params3);
 936   g_test_add_func ("/sprintf/upper-bound", test_upper_bound);
 937
 938   return g_test_run();
 939 }