tests/printf-test.c

   1 /* GLIB - Library of useful routines for C programming
   2  * Copyright (C) 1995-1997  Peter Mattis, Spencer Kimball and Josh MacDonald
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20 /*
  21  * Modified by the GLib Team 2003.  See the AUTHORS
  22  * file for a list of people on the GLib Team.  See the ChangeLog
  23  * files for a list of changes.  These files are distributed with
  24  * GLib at ftp://ftp.gtk.org/pub/gtk/.
  25  */
  26
  27 #include "glib.h"
  28
  29 #include <stdio.h>
  30 #include <string.h>
  31
  32 static gboolean any_failed = FALSE;
  33 static gboolean failed = FALSE;
  34
  35 #define TEST(message,cond)      G_STMT_START { failed = !(cond); \
  36 if (failed) \
  37   { if (!message) \
  38       g_print ("(%s:%d) failed for: %s\n", __FILE__, __LINE__, ( # cond )); \
  39     else \
  40       g_print ("(%s:%d) failed for: %s: (%s)\n", __FILE__, __LINE__, ( # cond ), message ? (gchar*)message : ""); \
  41     fflush (stdout); \
  42     any_failed = TRUE; \
  43   } \
  44 } G_STMT_END
  45
  46 #define TEST_FAILED(message) \
  47   G_STMT_START { g_print ("Error: "); g_print message; g_print ("\n"); any_failed = TRUE; } G_STMT_END
  48
  49 static gboolean
  50 same_value (const gchar *actual,
  51             const gchar *expected)
  52 {
  53   gdouble actual_value, expected_value;
  54
  55   actual_value = g_ascii_strtod (actual, NULL);
  56   expected_value = g_ascii_strtod (expected, NULL);
  57
  58   return actual_value == expected_value;
  59 }
  60
  61 int
  62 main (int   argc,
  63       char *argv[])
  64 {
  65   gchar buf[128];
  66   int i;
  67   long l;
  68
  69   /* truncation and return value */
  70   TEST (NULL, g_snprintf (buf, 0, "abc") == 3);
  71   TEST (NULL, g_snprintf (NULL, 0, "abc") == 3);
  72   TEST (NULL, g_snprintf (buf, 5, "abc") == 3);
  73   TEST (NULL, g_snprintf (buf, 1, "abc") == 3 && buf[0] == '\0' && !strcmp (buf, ""));
  74   TEST (NULL, g_snprintf (buf, 2, "abc") == 3 && buf[1] == '\0' && !strcmp (buf, "a"));
  75   TEST (NULL, g_snprintf (buf, 3, "abc") == 3 && buf[2] == '\0' && !strcmp (buf, "ab"));
  76   TEST (NULL, g_snprintf (buf, 4, "abc") == 3 && buf[3] == '\0' && !strcmp (buf, "abc"));
  77   TEST (NULL, g_snprintf (buf, 5, "abc") == 3 && buf[3] == '\0' && !strcmp (buf, "abc"));
  78
  79   /* %d, basic formatting */
  80   TEST (NULL, g_snprintf (buf, 128, "%d", 5) == 1 && !strcmp (buf, "5"));
  81   TEST (NULL, g_snprintf (buf, 128, "%d", 0) == 1 && !strcmp (buf, "0"));
  82   TEST (NULL, g_snprintf (buf, 128, "%.0d", 0) == 0 && !strcmp (buf, ""));
  83   TEST (NULL, g_snprintf (buf, 128, "%.0d", 1) == 1 && !strcmp (buf, "1"));
  84   TEST (NULL, g_snprintf (buf, 128, "%.d", 2) == 1 && !strcmp (buf, "2"));
  85   TEST (NULL, g_snprintf (buf, 128, "%d", -1) == 2 && !strcmp (buf, "-1"));
  86   TEST (NULL, g_snprintf (buf, 128, "%.3d", 5) == 3 && !strcmp (buf, "005"));
  87   TEST (NULL, g_snprintf (buf, 128, "%.3d", -5) == 4 && !strcmp (buf, "-005"));
  88   TEST (NULL, g_snprintf (buf, 128, "%5.3d", 5) == 5 && !strcmp (buf, "  005"));
  89   TEST (NULL, g_snprintf (buf, 128, "%-5.3d", -5) == 5 && !strcmp (buf, "-005 "));
  90   /* %d, length modifiers */
  91   TEST (NULL, g_snprintf (buf, 128, "%" G_GINT16_FORMAT, (gint16)-5) == 2 && !strcmp (buf, "-5"));
  92   TEST (NULL, g_snprintf (buf, 128, "%" G_GUINT16_FORMAT, (guint16)5) == 1 && !strcmp (buf, "5"));
  93   TEST (NULL, g_snprintf (buf, 128, "%" G_GINT32_FORMAT, (gint32)-5) == 2 && !strcmp (buf, "-5"));
  94   TEST (NULL, g_snprintf (buf, 128, "%" G_GUINT32_FORMAT, (guint32)5) == 1 && !strcmp (buf, "5"));
  95   TEST (NULL, g_snprintf (buf, 128, "%" G_GINT64_FORMAT, (gint64)-5) == 2 && !strcmp (buf, "-5"));
  96   TEST (NULL, g_snprintf (buf, 128, "%" G_GUINT64_FORMAT, (guint64)5) == 1 && !strcmp (buf, "5"));
  97   TEST (NULL, g_snprintf (buf, 128, "%" G_GSSIZE_FORMAT, (gssize)-5) == 2 && !strcmp (buf, "-5"));
  98   TEST (NULL, g_snprintf (buf, 128, "%" G_GSIZE_FORMAT, (gsize)5) == 1 && !strcmp (buf, "5"));
  99   /* %d, flags */
 100   TEST (NULL, g_snprintf (buf, 128, "%-d", 5) == 1 && !strcmp (buf, "5"));
 101   TEST (NULL, g_snprintf (buf, 128, "%-+d", 5) == 2 && !strcmp (buf, "+5"));
 102   TEST (NULL, g_snprintf (buf, 128, "%+-d", 5) == 2 && !strcmp (buf, "+5"));
 103   TEST (NULL, g_snprintf (buf, 128, "%+d", -5) == 2 && !strcmp (buf, "-5"));
 104   TEST (NULL, g_snprintf (buf, 128, "% d", 5) == 2 && !strcmp (buf, " 5"));
 105   TEST (NULL, g_snprintf (buf, 128, "% .0d", 0) == 1 && !strcmp (buf, " "));
 106   TEST (NULL, g_snprintf (buf, 128, "% +d", 5) == 2 && !strcmp (buf, "+5"));
 107   TEST (NULL, g_snprintf (buf, 128, "%03d", 5) == 3 && !strcmp (buf, "005"));
 108   TEST (NULL, g_snprintf (buf, 128, "%-03d", -5) == 3 && !strcmp (buf, "-5 "));
 109   TEST (NULL, g_snprintf (buf, 128, "%03d", -5) == 3 && !strcmp (buf, "-05"));
 110
 111   /* %o, basic formatting */
 112   TEST (NULL, g_snprintf (buf, 128, "%o", 5) == 1 && !strcmp (buf, "5"));
 113   TEST (NULL, g_snprintf (buf, 128, "%o", 8) == 2 && !strcmp (buf, "10"));
 114   TEST (NULL, g_snprintf (buf, 128, "%o", 0) == 1 && !strcmp (buf, "0"));
 115   TEST (NULL, g_snprintf (buf, 128, "%.0o", 0) == 0 && !strcmp (buf, ""));
 116   TEST (NULL, g_snprintf (buf, 128, "%.0o", 1) == 1 && !strcmp (buf, "1"));
 117   TEST (NULL, g_snprintf (buf, 128, "%.3o", 5) == 3 && !strcmp (buf, "005"));
 118   TEST (NULL, g_snprintf (buf, 128, "%.3o", 8) == 3 && !strcmp (buf, "010"));
 119   TEST (NULL, g_snprintf (buf, 128, "%5.3o", 5) == 5 && !strcmp (buf, "  005"));
 120
 121   /* %u, basic formatting */
 122   TEST (NULL, g_snprintf (buf, 128, "%u", 5) == 1 && !strcmp (buf, "5"));
 123   TEST (NULL, g_snprintf (buf, 128, "%u", 0) == 1 && !strcmp (buf, "0"));
 124   TEST (NULL, g_snprintf (buf, 128, "%.0u", 0) == 0 && !strcmp (buf, ""));
 125   TEST (NULL, g_snprintf (buf, 128, "%.0u", 1) == 1 && !strcmp (buf, "1"));
 126   TEST (NULL, g_snprintf (buf, 128, "%.3u", 5) == 3 && !strcmp (buf, "005"));
 127   TEST (NULL, g_snprintf (buf, 128, "%5.3u", 5) == 5 && !strcmp (buf, "  005"));
 128
 129   /* %x, basic formatting */
 130   TEST (NULL, g_snprintf (buf, 128, "%x", 5) == 1 && !strcmp (buf, "5"));
 131   TEST (buf, g_snprintf (buf, 128, "%x", 31) == 2 && !strcmp (buf, "1f"));
 132   TEST (NULL, g_snprintf (buf, 128, "%x", 0) == 1 && !strcmp (buf, "0"));
 133   TEST (NULL, g_snprintf (buf, 128, "%.0x", 0) == 0 && !strcmp (buf, ""));
 134   TEST (NULL, g_snprintf (buf, 128, "%.0x", 1) == 1 && !strcmp (buf, "1"));
 135   TEST (NULL, g_snprintf (buf, 128, "%.3x", 5) == 3 && !strcmp (buf, "005"));
 136   TEST (NULL, g_snprintf (buf, 128, "%.3x", 31) == 3 && !strcmp (buf, "01f"));
 137   TEST (NULL, g_snprintf (buf, 128, "%5.3x", 5) == 5 && !strcmp (buf, "  005"));
 138   /* %x, flags */
 139   TEST (NULL, g_snprintf (buf, 128, "%-x", 5) == 1 && !strcmp (buf, "5"));
 140   TEST (NULL, g_snprintf (buf, 128, "%03x", 5) == 3 && !strcmp (buf, "005"));
 141   TEST (NULL, g_snprintf (buf, 128, "%#x", 31) == 4 && !strcmp (buf, "0x1f"));
 142   TEST (NULL, g_snprintf (buf, 128, "%#x", 0) == 1 && !strcmp (buf, "0"));
 143
 144   /* %X, basic formatting */
 145   TEST (NULL, g_snprintf (buf, 128, "%X", 5) == 1 && !strcmp (buf, "5"));
 146   TEST (buf, g_snprintf (buf, 128, "%X", 31) == 2 && !strcmp (buf, "1F"));
 147   TEST (NULL, g_snprintf (buf, 128, "%X", 0) == 1 && !strcmp (buf, "0"));
 148   TEST (NULL, g_snprintf (buf, 128, "%.0X", 0) == 0 && !strcmp (buf, ""));
 149   TEST (NULL, g_snprintf (buf, 128, "%.0X", 1) == 1 && !strcmp (buf, "1"));
 150   TEST (NULL, g_snprintf (buf, 128, "%.3X", 5) == 3 && !strcmp (buf, "005"));
 151   TEST (NULL, g_snprintf (buf, 128, "%.3X", 31) == 3 && !strcmp (buf, "01F"));
 152   TEST (NULL, g_snprintf (buf, 128, "%5.3X", 5) == 5 && !strcmp (buf, "  005"));
 153   /* %X, flags */
 154   TEST (NULL, g_snprintf (buf, 128, "%-X", 5) == 1 && !strcmp (buf, "5"));
 155   TEST (NULL, g_snprintf (buf, 128, "%03X", 5) == 3 && !strcmp (buf, "005"));
 156   TEST (NULL, g_snprintf (buf, 128, "%#X", 31) == 4 && !strcmp (buf, "0X1F"));
 157   TEST (NULL, g_snprintf (buf, 128, "%#X", 0) == 1 && !strcmp (buf, "0"));
 158
 159   /* %f, basic formattting */
 160   TEST (NULL, g_snprintf (buf, 128, "%f", G_PI) == 8 && !strncmp (buf, "3.14159", 7));
 161   TEST (NULL, g_snprintf (buf, 128, "%.8f", G_PI) == 10 && !strncmp (buf, "3.1415926", 9));
 162   TEST (NULL, g_snprintf (buf, 128, "%.0f", G_PI) == 1 && !strcmp (buf, "3"));
 163   TEST (NULL, g_snprintf (buf, 128, "%1.f", G_PI) == 1 && !strcmp (buf, "3"));
 164   TEST (NULL, g_snprintf (buf, 128, "%3.f", G_PI) == 3 && !strcmp (buf, "  3"));
 165   /* %f, flags */
 166   TEST (NULL, g_snprintf (buf, 128, "%+f", G_PI) == 9 && !strncmp (buf, "+3.14159", 8));
 167   TEST (NULL, g_snprintf (buf, 128, "% f", G_PI) == 9 && !strncmp (buf, " 3.14159", 8));
 168   TEST (NULL, g_snprintf (buf, 128, "%#.0f", G_PI) == 2 && !strcmp (buf, "3."));
 169   TEST (NULL, g_snprintf (buf, 128, "%05.2f", G_PI) == 5 && !strcmp (buf, "03.14"));
 170
 171   /* %e, basic formatting */
 172   /* for %e we can't expect to reproduce exact strings and lengths, since SUS
 173    * only guarantees that the exponent shall always contain at least two
 174    * digits. On Windows, it seems to be at least three digits long.
 175    * Therefore, we compare the results of parsing the expected result and the
 176    * actual result.
 177    */
 178   TEST (buf, g_snprintf (buf, 128, "%e", G_PI) >= 12 && same_value (buf, "3.141593e+00"));
 179   TEST (buf, g_snprintf (buf, 128, "%.8e", G_PI) >= 14 && same_value (buf, "3.14159265e+00"));
 180   TEST (buf, g_snprintf (buf, 128, "%.0e", G_PI) >= 5 && same_value (buf, "3e+00"));
 181   TEST (buf, g_snprintf (buf, 128, "%.1e", 0.0) >= 7 && same_value (buf, "0.0e+00"));
 182   TEST (buf, g_snprintf (buf, 128, "%.1e", 0.00001) >= 7 && same_value (buf, "1.0e-05"));
 183   TEST (buf, g_snprintf (buf, 128, "%.1e", 10000.0) >= 7 && same_value (buf, "1.0e+04"));
 184   /* %e, flags */
 185   TEST (buf, g_snprintf (buf, 128, "%+e", G_PI) >= 13 && same_value (buf, "+3.141593e+00"));
 186   TEST (buf, g_snprintf (buf, 128, "% e", G_PI) >= 13 && same_value (buf, " 3.141593e+00"));
 187   TEST (buf, g_snprintf (buf, 128, "%#.0e", G_PI) >= 6 && same_value (buf, "3.e+00"));
 188   TEST (buf, g_snprintf (buf, 128, "%09.2e", G_PI) >= 9 && same_value (buf, "03.14e+00"));
 189
 190   /* %c */
 191   TEST (NULL, g_snprintf (buf, 128, "%c", 'a') == 1 && !strcmp (buf, "a"));
 192
 193   /* %s */
 194   TEST (NULL, g_snprintf (buf, 128, "%.2s", "abc") == 2 && !strcmp (buf, "ab"));
 195   TEST (NULL, g_snprintf (buf, 128, "%.6s", "abc") == 3 && !strcmp (buf, "abc"));
 196   TEST (NULL, g_snprintf (buf, 128, "%5s", "abc") == 5 && !strcmp (buf, "  abc"));
 197   TEST (NULL, g_snprintf (buf, 128, "%-5s", "abc") == 5 && !strcmp (buf, "abc  "));
 198   TEST (NULL, g_snprintf (buf, 128, "%5.2s", "abc") == 5 && !strcmp (buf, "   ab"));
 199   TEST (NULL, g_snprintf (buf, 128, "%*s", 5, "abc") == 5 && !strcmp (buf, "  abc"));
 200 #if 0 /* HP-UX doesn't get this right */
 201   TEST (NULL, g_snprintf (buf, 128, "%*s", -5, "abc") == 5 && !strcmp (buf, "abc  "));
 202 #endif
 203   TEST (NULL, g_snprintf (buf, 128, "%*.*s", 5, 2, "abc") == 5 && !strcmp (buf, "   ab"));
 204
 205   /* %n */
 206   TEST (NULL, g_snprintf (buf, 128, "abc%n", &i) == 3 && !strcmp (buf, "abc") && i == 3);
 207   TEST (NULL, g_snprintf (buf, 128, "abc%ln", &l) == 3 && !strcmp (buf, "abc") && l == 3);
 208
 209   /* %% */
 210   TEST (NULL, g_snprintf (buf, 128, "%%") == 1 && !strcmp (buf, "%"));
 211
 212   /* positional parameters */
 213   TEST (NULL, g_snprintf (buf, 128, "%2$c %1$c", 'b', 'a') == 3 && !strcmp (buf, "a b"));
 214   TEST (NULL, g_snprintf (buf, 128, "%1$*2$.*3$s", "abc", 5, 2) == 5 && !strcmp (buf, "   ab"));
 215   TEST (NULL, g_snprintf (buf, 128, "%1$s%1$s", "abc") == 6 && !strcmp (buf, "abcabc"));
 216
 217   /* 64 bit support */
 218   TEST (NULL, g_snprintf (buf, 128, "%" G_GINT64_FORMAT, (gint64)123456) == 6 && !strcmp (buf, "123456"));
 219   TEST (NULL, g_snprintf (buf, 128, "%" G_GINT64_FORMAT, (gint64)-123456) == 7 && !strcmp (buf, "-123456"));
 220   TEST (NULL, g_snprintf (buf, 128, "%" G_GUINT64_FORMAT, (guint64)123456) == 6 && !strcmp (buf, "123456"));
 221   TEST (NULL, g_snprintf (buf, 128, "%" G_GINT64_MODIFIER "o", (gint64)123456) == 6 && !strcmp (buf, "361100"));
 222   TEST (NULL, g_snprintf (buf, 128, "%#" G_GINT64_MODIFIER "o", (gint64)123456) == 7 && !strcmp (buf, "0361100"));
 223   TEST (NULL, g_snprintf (buf, 128, "%" G_GINT64_MODIFIER "x", (gint64)123456) == 5 && !strcmp (buf, "1e240"));
 224   TEST (NULL, g_snprintf (buf, 128, "%#" G_GINT64_MODIFIER "x", (gint64)123456) == 7 && !strcmp (buf, "0x1e240"));
 225   TEST (NULL, g_snprintf (buf, 128, "%" G_GINT64_MODIFIER "X", (gint64)123456) == 5 && !strcmp (buf, "1E240"));
 226 #ifdef G_OS_WIN32
 227   /* On Win32, test that the "ll" modifier also works, for backward
 228    * compatibility. One really should use the G_GINT64_MODIFIER (which
 229    * on Win32 is the "I64" that the (msvcrt) C library's printf uses),
 230    * but "ll" used to work with the "trio" g_printf implementation in
 231    * GLib 2.2, so it's best if it continues to work.
 232    */
 233   TEST (NULL, g_snprintf (buf, 128, "%" "lli", (gint64)123456) == 6 && !strcmp (buf, "123456"));
 234   TEST (NULL, g_snprintf (buf, 128, "%" "lli", (gint64)-123456) == 7 && !strcmp (buf, "-123456"));
 235   TEST (NULL, g_snprintf (buf, 128, "%" "llu", (guint64)123456) == 6 && !strcmp (buf, "123456"));
 236   TEST (NULL, g_snprintf (buf, 128, "%" "ll" "o", (gint64)123456) == 6 && !strcmp (buf, "361100"));
 237   TEST (NULL, g_snprintf (buf, 128, "%#" "ll" "o", (gint64)123456) == 7 && !strcmp (buf, "0361100"));
 238   TEST (NULL, g_snprintf (buf, 128, "%" "ll" "x", (gint64)123456) == 5 && !strcmp (buf, "1e240"));
 239   TEST (NULL, g_snprintf (buf, 128, "%#" "ll" "x", (gint64)123456) == 7 && !strcmp (buf, "0x1e240"));
 240   TEST (NULL, g_snprintf (buf, 128, "%" "ll" "X", (gint64)123456) == 5 && !strcmp (buf, "1E240"));
 241 #endif
 242
 243   return any_failed;
 244 }