glib/tests/mappedfile.c

   1 #define GLIB_DISABLE_DEPRECATION_WARNINGS
   2
   3 #include <glib.h>
   4 #include <string.h>
   5 #include <glib/gstdio.h>
   6 #include <sys/stat.h>
   7 #include <sys/types.h>
   8 #include <fcntl.h>
   9
  10 #ifdef G_OS_UNIX
  11 #include <unistd.h>
  12 #endif
  13 #ifdef G_OS_WIN32
  14 #include <io.h>
  15 #endif
  16
  17 static void
  18 test_basic (void)
  19 {
  20   GMappedFile *file;
  21   GError *error;
  22
  23   error = NULL;
  24   file = g_mapped_file_new (g_test_get_filename (G_TEST_DIST, "empty", NULL), FALSE, &error);
  25   g_assert_no_error (error);
  26
  27   g_mapped_file_ref (file);
  28   g_mapped_file_unref (file);
  29
  30   g_mapped_file_unref (file);
  31 }
  32
  33 static void
  34 test_empty (void)
  35 {
  36   GMappedFile *file;
  37   GError *error;
  38
  39   error = NULL;
  40   file = g_mapped_file_new (g_test_get_filename (G_TEST_DIST, "empty", NULL), FALSE, &error);
  41   g_assert_no_error (error);
  42
  43   g_assert (g_mapped_file_get_contents (file) == NULL);
  44
  45   g_mapped_file_free (file);
  46 }
  47
  48 #ifdef G_OS_UNIX
  49 static void
  50 test_device (void)
  51 {
  52   GError *error = NULL;
  53   GMappedFile *file;
  54
  55   file = g_mapped_file_new ("/dev/null", FALSE, &error);
  56   g_assert (g_error_matches (error, G_FILE_ERROR, G_FILE_ERROR_INVAL) ||
  57             g_error_matches (error, G_FILE_ERROR, G_FILE_ERROR_NODEV) ||
  58             g_error_matches (error, G_FILE_ERROR, G_FILE_ERROR_NOMEM));
  59   g_assert (file == NULL);
  60   g_error_free (error);
  61 }
  62 #endif
  63
  64 static void
  65 test_nonexisting (void)
  66 {
  67   GMappedFile *file;
  68   GError *error;
  69
  70   error = NULL;
  71   file = g_mapped_file_new ("no-such-file", FALSE, &error);
  72   g_assert_error (error, G_FILE_ERROR, G_FILE_ERROR_NOENT);
  73   g_clear_error (&error);
  74   g_assert (file == NULL);
  75 }
  76
  77 static void
  78 test_writable (void)
  79 {
  80   GMappedFile *file;
  81   GError *error = NULL;
  82   gchar *contents;
  83   gsize len;
  84   const gchar *old = "MMMMMMMMMMMMMMMMMMMMMMMMM";
  85   const gchar *new = "abcdefghijklmnopqrstuvxyz";
  86   gchar *tmp_copy_path;
  87
  88   tmp_copy_path = g_build_filename (g_get_user_runtime_dir (), "glib-test-4096-random-bytes", NULL);
  89
  90   g_file_get_contents (g_test_get_filename (G_TEST_DIST, "4096-random-bytes", NULL), &contents, &len, &error);
  91   g_assert_no_error (error);
  92   g_file_set_contents (tmp_copy_path, contents, len, &error);
  93   g_assert_no_error (error);
  94
  95   g_free (contents);
  96
  97   file = g_mapped_file_new (tmp_copy_path, TRUE, &error);
  98   g_assert_no_error (error);
  99
 100   contents = g_mapped_file_get_contents (file);
 101   g_assert (strncmp (contents, old, strlen (old)) == 0);
 102
 103   memcpy (contents, new, strlen (new));
 104   g_assert (strncmp (contents, new, strlen (new)) == 0);
 105
 106   g_mapped_file_free (file);
 107
 108   error = NULL;
 109   file = g_mapped_file_new (tmp_copy_path, FALSE, &error);
 110   g_assert_no_error (error);
 111
 112   contents = g_mapped_file_get_contents (file);
 113   g_assert (strncmp (contents, old, strlen (old)) == 0);
 114
 115   g_mapped_file_free (file);
 116
 117   g_free (tmp_copy_path);
 118 }
 119
 120 static void
 121 test_writable_fd (void)
 122 {
 123   GMappedFile *file;
 124   GError *error = NULL;
 125   gchar *contents;
 126   const gchar *old = "MMMMMMMMMMMMMMMMMMMMMMMMM";
 127   const gchar *new = "abcdefghijklmnopqrstuvxyz";
 128   gsize len;
 129   int fd;
 130   gchar *tmp_copy_path;
 131
 132   tmp_copy_path = g_build_filename (g_get_user_runtime_dir (), "glib-test-4096-random-bytes", NULL);
 133
 134   g_file_get_contents (g_test_get_filename (G_TEST_DIST, "4096-random-bytes", NULL), &contents, &len, &error);
 135   g_assert_no_error (error);
 136   g_file_set_contents (tmp_copy_path, contents, len, &error);
 137   g_assert_no_error (error);
 138
 139   g_free (contents);
 140
 141   fd = g_open (tmp_copy_path, O_RDWR, 0);
 142   g_assert (fd != -1);
 143   file = g_mapped_file_new_from_fd (fd, TRUE, &error);
 144   g_assert_no_error (error);
 145
 146   contents = g_mapped_file_get_contents (file);
 147   g_assert (strncmp (contents, old, strlen (old)) == 0);
 148
 149   memcpy (contents, new, strlen (new));
 150   g_assert (strncmp (contents, new, strlen (new)) == 0);
 151
 152   g_mapped_file_free (file);
 153   close (fd);
 154
 155   error = NULL;
 156   fd = g_open (tmp_copy_path, O_RDWR, 0);
 157   g_assert (fd != -1);
 158   file = g_mapped_file_new_from_fd (fd, TRUE, &error);
 159   g_assert_no_error (error);
 160
 161   contents = g_mapped_file_get_contents (file);
 162   g_assert (strncmp (contents, old, strlen (old)) == 0);
 163
 164   g_mapped_file_free (file);
 165
 166   g_free (tmp_copy_path);
 167 }
 168
 169 static void
 170 test_gbytes (void)
 171 {
 172   GMappedFile *file;
 173   GBytes *bytes;
 174   GError *error;
 175
 176   error = NULL;
 177   file = g_mapped_file_new (g_test_get_filename (G_TEST_DIST, "empty", NULL), FALSE, &error);
 178   g_assert_no_error (error);
 179
 180   bytes = g_mapped_file_get_bytes (file);
 181   g_mapped_file_unref (file);
 182
 183   g_assert_cmpint (g_bytes_get_size (bytes), ==, 0);
 184   g_bytes_unref (bytes);
 185 }
 186
 187 int
 188 main (int argc, char *argv[])
 189 {
 190   g_test_init (&argc, &argv, NULL);
 191
 192   g_test_add_func ("/mappedfile/basic", test_basic);
 193   g_test_add_func ("/mappedfile/empty", test_empty);
 194 #ifdef G_OS_UNIX
 195   g_test_add_func ("/mappedfile/device", test_device);
 196 #endif
 197   g_test_add_func ("/mappedfile/nonexisting", test_nonexisting);
 198   g_test_add_func ("/mappedfile/writable", test_writable);
 199   g_test_add_func ("/mappedfile/writable_fd", test_writable_fd);
 200   g_test_add_func ("/mappedfile/gbytes", test_gbytes);
 201
 202   return g_test_run ();
 203 }