gobject/tests/param.c

   1 #define GLIB_DISABLE_DEPRECATION_WARNINGS
   2 #include <glib-object.h>
   3 #include <stdlib.h>
   4
   5 static void
   6 test_param_value (void)
   7 {
   8   GParamSpec *p, *p2;
   9   GParamSpec *pp;
  10   GValue value = G_VALUE_INIT;
  11
  12   g_value_init (&value, G_TYPE_PARAM);
  13   g_assert (G_VALUE_HOLDS_PARAM (&value));
  14
  15   p = g_param_spec_int ("my-int", "My Int", "Blurb", 0, 20, 10, G_PARAM_READWRITE);
  16
  17   g_value_take_param (&value, p);
  18   p2 = g_value_get_param (&value);
  19   g_assert (p2 == p);
  20
  21   pp = g_param_spec_uint ("my-uint", "My UInt", "Blurb", 0, 10, 5, G_PARAM_READWRITE);
  22   g_value_set_param (&value, pp);
  23
  24   p2 = g_value_dup_param (&value);
  25   g_assert (p2 == pp); /* param specs use ref/unref for copy/free */
  26   g_param_spec_unref (p2);
  27
  28   g_value_unset (&value);
  29   g_param_spec_unref (pp);
  30 }
  31
  32 static gint destroy_count;
  33
  34 static void
  35 my_destroy (gpointer data)
  36 {
  37   destroy_count++;
  38 }
  39
  40 static void
  41 test_param_qdata (void)
  42 {
  43   GParamSpec *p;
  44   gchar *bla;
  45   GQuark q;
  46
  47   q = g_quark_from_string ("bla");
  48
  49   p = g_param_spec_int ("my-int", "My Int", "Blurb", 0, 20, 10, G_PARAM_READWRITE);
  50   g_param_spec_set_qdata (p, q, "bla");
  51   bla = g_param_spec_get_qdata (p, q);
  52   g_assert_cmpstr (bla, ==, "bla");
  53
  54   g_assert_cmpint (destroy_count, ==, 0);
  55   g_param_spec_set_qdata_full (p, q, "bla", my_destroy);
  56   g_param_spec_set_qdata_full (p, q, "blabla", my_destroy);
  57   g_assert_cmpint (destroy_count, ==, 1);
  58   g_assert_cmpstr (g_param_spec_steal_qdata (p, q), ==, "blabla");
  59   g_assert_cmpint (destroy_count, ==, 1);
  60   g_assert (g_param_spec_get_qdata (p, q) == NULL);
  61
  62   g_param_spec_ref_sink (p);
  63
  64   g_param_spec_unref (p);
  65 }
  66
  67 static void
  68 test_param_validate (void)
  69 {
  70   GParamSpec *p;
  71   GValue value = G_VALUE_INIT;
  72
  73   p = g_param_spec_int ("my-int", "My Int", "Blurb", 0, 20, 10, G_PARAM_READWRITE);
  74
  75   g_value_init (&value, G_TYPE_INT);
  76   g_value_set_int (&value, 100);
  77   g_assert (!g_param_value_defaults (p, &value));
  78   g_assert (g_param_value_validate (p, &value));
  79   g_assert_cmpint (g_value_get_int (&value), ==, 20);
  80
  81   g_param_value_set_default (p, &value);
  82   g_assert (g_param_value_defaults (p, &value));
  83   g_assert_cmpint (g_value_get_int (&value), ==, 10);
  84
  85   g_param_spec_unref (p);
  86 }
  87
  88 static void
  89 test_param_strings (void)
  90 {
  91   GParamSpec *p;
  92
  93   /* test canonicalization */
  94   p = g_param_spec_int ("my_int:bla", "My Int", "Blurb", 0, 20, 10, G_PARAM_READWRITE);
  95
  96   g_assert_cmpstr (g_param_spec_get_name (p), ==, "my-int-bla");
  97   g_assert_cmpstr (g_param_spec_get_nick (p), ==, "My Int");
  98   g_assert_cmpstr (g_param_spec_get_blurb (p), ==, "Blurb");
  99
 100   g_param_spec_unref (p);
 101
 102   /* test nick defaults to name */
 103   p = g_param_spec_int ("my-int", NULL, NULL, 0, 20, 10, G_PARAM_READWRITE);
 104
 105   g_assert_cmpstr (g_param_spec_get_name (p), ==, "my-int");
 106   g_assert_cmpstr (g_param_spec_get_nick (p), ==, "my-int");
 107   g_assert (g_param_spec_get_blurb (p) == NULL);
 108
 109   g_param_spec_unref (p);
 110 }
 111
 112 static void
 113 test_param_convert (void)
 114 {
 115   GParamSpec *p;
 116   GValue v1 = G_VALUE_INIT;
 117   GValue v2 = G_VALUE_INIT;
 118
 119   p = g_param_spec_int ("my-int", "My Int", "Blurb", 0, 20, 10, G_PARAM_READWRITE);
 120   g_value_init (&v1, G_TYPE_UINT);
 121   g_value_set_uint (&v1, 43);
 122
 123   g_value_init (&v2, G_TYPE_INT);
 124   g_value_set_int (&v2, -4);
 125
 126   g_assert (!g_param_value_convert (p, &v1, &v2, TRUE));
 127   g_assert_cmpint (g_value_get_int (&v2), ==, -4);
 128
 129   g_assert (g_param_value_convert (p, &v1, &v2, FALSE));
 130   g_assert_cmpint (g_value_get_int (&v2), ==, 20);
 131
 132   g_param_spec_unref (p);
 133 }
 134
 135 static void
 136 test_value_transform (void)
 137 {
 138   GValue src = G_VALUE_INIT;
 139   GValue dest = G_VALUE_INIT;
 140
 141 #define CHECK_INT_CONVERSION(type, getter, value)                       \
 142   g_assert (g_value_type_transformable (G_TYPE_INT, type));             \
 143   g_value_init (&src, G_TYPE_INT);                                      \
 144   g_value_init (&dest, type);                                           \
 145   g_value_set_int (&src, value);                                        \
 146   g_assert (g_value_transform (&src, &dest));                           \
 147   g_assert_cmpint (g_value_get_##getter (&dest), ==, value);            \
 148   g_value_unset (&src);                                                 \
 149   g_value_unset (&dest);
 150
 151   /* Keep a check for an integer in the range of 0-127 so we're
 152    * still testing g_value_get_char().  See
 153    * https://bugzilla.gnome.org/show_bug.cgi?id=659870
 154    * for why it is broken.
 155    */
 156   CHECK_INT_CONVERSION(G_TYPE_CHAR, char, 124)
 157
 158   CHECK_INT_CONVERSION(G_TYPE_CHAR, schar, -124)
 159   CHECK_INT_CONVERSION(G_TYPE_CHAR, schar, 124)
 160   CHECK_INT_CONVERSION(G_TYPE_UCHAR, uchar, 0)
 161   CHECK_INT_CONVERSION(G_TYPE_UCHAR, uchar, 255)
 162   CHECK_INT_CONVERSION(G_TYPE_INT, int, -12345)
 163   CHECK_INT_CONVERSION(G_TYPE_INT, int, 12345)
 164   CHECK_INT_CONVERSION(G_TYPE_UINT, uint, 0)
 165   CHECK_INT_CONVERSION(G_TYPE_UINT, uint, 12345)
 166   CHECK_INT_CONVERSION(G_TYPE_LONG, long, -12345678)
 167   CHECK_INT_CONVERSION(G_TYPE_ULONG, ulong, 12345678)
 168   CHECK_INT_CONVERSION(G_TYPE_INT64, int64, -12345678)
 169   CHECK_INT_CONVERSION(G_TYPE_UINT64, uint64, 12345678)
 170   CHECK_INT_CONVERSION(G_TYPE_FLOAT, float, 12345678)
 171   CHECK_INT_CONVERSION(G_TYPE_DOUBLE, double, 12345678)
 172
 173 #define CHECK_UINT_CONVERSION(type, getter, value)                      \
 174   g_assert (g_value_type_transformable (G_TYPE_UINT, type));            \
 175   g_value_init (&src, G_TYPE_UINT);                                     \
 176   g_value_init (&dest, type);                                           \
 177   g_value_set_uint (&src, value);                                       \
 178   g_assert (g_value_transform (&src, &dest));                           \
 179   g_assert_cmpuint (g_value_get_##getter (&dest), ==, value);           \
 180   g_value_unset (&src);                                                 \
 181   g_value_unset (&dest);
 182
 183   CHECK_UINT_CONVERSION(G_TYPE_CHAR, char, 124)
 184   CHECK_UINT_CONVERSION(G_TYPE_CHAR, char, 124)
 185   CHECK_UINT_CONVERSION(G_TYPE_UCHAR, uchar, 0)
 186   CHECK_UINT_CONVERSION(G_TYPE_UCHAR, uchar, 255)
 187   CHECK_UINT_CONVERSION(G_TYPE_INT, int, 12345)
 188   CHECK_UINT_CONVERSION(G_TYPE_INT, int, 12345)
 189   CHECK_UINT_CONVERSION(G_TYPE_UINT, uint, 0)
 190   CHECK_UINT_CONVERSION(G_TYPE_UINT, uint, 12345)
 191   CHECK_UINT_CONVERSION(G_TYPE_LONG, long, 12345678)
 192   CHECK_UINT_CONVERSION(G_TYPE_ULONG, ulong, 12345678)
 193   CHECK_UINT_CONVERSION(G_TYPE_INT64, int64, 12345678)
 194   CHECK_UINT_CONVERSION(G_TYPE_UINT64, uint64, 12345678)
 195   CHECK_UINT_CONVERSION(G_TYPE_FLOAT, float, 12345678)
 196   CHECK_UINT_CONVERSION(G_TYPE_DOUBLE, double, 12345678)
 197
 198 #define CHECK_LONG_CONVERSION(type, getter, value)                      \
 199   g_assert (g_value_type_transformable (G_TYPE_LONG, type));            \
 200   g_value_init (&src, G_TYPE_LONG);                                     \
 201   g_value_init (&dest, type);                                           \
 202   g_value_set_long (&src, value);                                       \
 203   g_assert (g_value_transform (&src, &dest));                           \
 204   g_assert_cmpint (g_value_get_##getter (&dest), ==, value);            \
 205   g_value_unset (&src);                                                 \
 206   g_value_unset (&dest);
 207
 208   CHECK_LONG_CONVERSION(G_TYPE_CHAR, schar, -124)
 209   CHECK_LONG_CONVERSION(G_TYPE_CHAR, schar, 124)
 210   CHECK_LONG_CONVERSION(G_TYPE_UCHAR, uchar, 0)
 211   CHECK_LONG_CONVERSION(G_TYPE_UCHAR, uchar, 255)
 212   CHECK_LONG_CONVERSION(G_TYPE_INT, int, -12345)
 213   CHECK_LONG_CONVERSION(G_TYPE_INT, int, 12345)
 214   CHECK_LONG_CONVERSION(G_TYPE_UINT, uint, 0)
 215   CHECK_LONG_CONVERSION(G_TYPE_UINT, uint, 12345)
 216   CHECK_LONG_CONVERSION(G_TYPE_LONG, long, -12345678)
 217   CHECK_LONG_CONVERSION(G_TYPE_ULONG, ulong, 12345678)
 218   CHECK_LONG_CONVERSION(G_TYPE_INT64, int64, -12345678)
 219   CHECK_LONG_CONVERSION(G_TYPE_UINT64, uint64, 12345678)
 220   CHECK_LONG_CONVERSION(G_TYPE_FLOAT, float, 12345678)
 221   CHECK_LONG_CONVERSION(G_TYPE_DOUBLE, double, 12345678)
 222
 223 #define CHECK_ULONG_CONVERSION(type, getter, value)                     \
 224   g_assert (g_value_type_transformable (G_TYPE_ULONG, type));           \
 225   g_value_init (&src, G_TYPE_ULONG);                                    \
 226   g_value_init (&dest, type);                                           \
 227   g_value_set_ulong (&src, value);                                      \
 228   g_assert (g_value_transform (&src, &dest));                           \
 229   g_assert_cmpuint (g_value_get_##getter (&dest), ==, value);           \
 230   g_value_unset (&src);                                                 \
 231   g_value_unset (&dest);
 232
 233   CHECK_ULONG_CONVERSION(G_TYPE_CHAR, char, 124)
 234   CHECK_ULONG_CONVERSION(G_TYPE_CHAR, char, 124)
 235   CHECK_ULONG_CONVERSION(G_TYPE_UCHAR, uchar, 0)
 236   CHECK_ULONG_CONVERSION(G_TYPE_UCHAR, uchar, 255)
 237   CHECK_ULONG_CONVERSION(G_TYPE_INT, int, -12345)
 238   CHECK_ULONG_CONVERSION(G_TYPE_INT, int, 12345)
 239   CHECK_ULONG_CONVERSION(G_TYPE_UINT, uint, 0)
 240   CHECK_ULONG_CONVERSION(G_TYPE_UINT, uint, 12345)
 241   CHECK_ULONG_CONVERSION(G_TYPE_LONG, long, 12345678)
 242   CHECK_ULONG_CONVERSION(G_TYPE_ULONG, ulong, 12345678)
 243   CHECK_ULONG_CONVERSION(G_TYPE_INT64, int64, 12345678)
 244   CHECK_ULONG_CONVERSION(G_TYPE_UINT64, uint64, 12345678)
 245   CHECK_ULONG_CONVERSION(G_TYPE_FLOAT, float, 12345678)
 246   CHECK_ULONG_CONVERSION(G_TYPE_DOUBLE, double, 12345678)
 247
 248 #define CHECK_INT64_CONVERSION(type, getter, value)                     \
 249   g_assert (g_value_type_transformable (G_TYPE_INT64, type));           \
 250   g_value_init (&src, G_TYPE_INT64);                                    \
 251   g_value_init (&dest, type);                                           \
 252   g_value_set_int64 (&src, value);                                      \
 253   g_assert (g_value_transform (&src, &dest));                           \
 254   g_assert_cmpint (g_value_get_##getter (&dest), ==, value);            \
 255   g_value_unset (&src);                                                 \
 256   g_value_unset (&dest);
 257
 258   CHECK_INT64_CONVERSION(G_TYPE_CHAR, schar, -124)
 259   CHECK_INT64_CONVERSION(G_TYPE_CHAR, schar, 124)
 260   CHECK_INT64_CONVERSION(G_TYPE_UCHAR, uchar, 0)
 261   CHECK_INT64_CONVERSION(G_TYPE_UCHAR, uchar, 255)
 262   CHECK_INT64_CONVERSION(G_TYPE_INT, int, -12345)
 263   CHECK_INT64_CONVERSION(G_TYPE_INT, int, 12345)
 264   CHECK_INT64_CONVERSION(G_TYPE_UINT, uint, 0)
 265   CHECK_INT64_CONVERSION(G_TYPE_UINT, uint, 12345)
 266   CHECK_INT64_CONVERSION(G_TYPE_LONG, long, -12345678)
 267   CHECK_INT64_CONVERSION(G_TYPE_ULONG, ulong, 12345678)
 268   CHECK_INT64_CONVERSION(G_TYPE_INT64, int64, -12345678)
 269   CHECK_INT64_CONVERSION(G_TYPE_UINT64, uint64, 12345678)
 270   CHECK_INT64_CONVERSION(G_TYPE_FLOAT, float, 12345678)
 271   CHECK_INT64_CONVERSION(G_TYPE_DOUBLE, double, 12345678)
 272
 273 #define CHECK_UINT64_CONVERSION(type, getter, value)                    \
 274   g_assert (g_value_type_transformable (G_TYPE_UINT64, type));          \
 275   g_value_init (&src, G_TYPE_UINT64);                                   \
 276   g_value_init (&dest, type);                                           \
 277   g_value_set_uint64 (&src, value);                                     \
 278   g_assert (g_value_transform (&src, &dest));                           \
 279   g_assert_cmpuint (g_value_get_##getter (&dest), ==, value);           \
 280   g_value_unset (&src);                                                 \
 281   g_value_unset (&dest);
 282
 283   CHECK_UINT64_CONVERSION(G_TYPE_CHAR, schar, -124)
 284   CHECK_UINT64_CONVERSION(G_TYPE_CHAR, schar, 124)
 285   CHECK_UINT64_CONVERSION(G_TYPE_UCHAR, uchar, 0)
 286   CHECK_UINT64_CONVERSION(G_TYPE_UCHAR, uchar, 255)
 287   CHECK_UINT64_CONVERSION(G_TYPE_INT, int, -12345)
 288   CHECK_UINT64_CONVERSION(G_TYPE_INT, int, 12345)
 289   CHECK_UINT64_CONVERSION(G_TYPE_UINT, uint, 0)
 290   CHECK_UINT64_CONVERSION(G_TYPE_UINT, uint, 12345)
 291   CHECK_UINT64_CONVERSION(G_TYPE_LONG, long, -12345678)
 292   CHECK_UINT64_CONVERSION(G_TYPE_ULONG, ulong, 12345678)
 293   CHECK_UINT64_CONVERSION(G_TYPE_INT64, int64, -12345678)
 294   CHECK_UINT64_CONVERSION(G_TYPE_UINT64, uint64, 12345678)
 295   CHECK_UINT64_CONVERSION(G_TYPE_FLOAT, float, 12345678)
 296   CHECK_UINT64_CONVERSION(G_TYPE_DOUBLE, double, 12345678)
 297
 298 #define CHECK_FLOAT_CONVERSION(type, getter, value)                    \
 299   g_assert (g_value_type_transformable (G_TYPE_FLOAT, type));          \
 300   g_value_init (&src, G_TYPE_FLOAT);                                   \
 301   g_value_init (&dest, type);                                          \
 302   g_value_set_float (&src, value);                                     \
 303   g_assert (g_value_transform (&src, &dest));                          \
 304   g_assert_cmpfloat (g_value_get_##getter (&dest), ==, value);         \
 305   g_value_unset (&src);                                                \
 306   g_value_unset (&dest);
 307
 308   CHECK_FLOAT_CONVERSION(G_TYPE_CHAR, schar, -124)
 309   CHECK_FLOAT_CONVERSION(G_TYPE_CHAR, schar, 124)
 310   CHECK_FLOAT_CONVERSION(G_TYPE_UCHAR, uchar, 0)
 311   CHECK_FLOAT_CONVERSION(G_TYPE_UCHAR, uchar, 255)
 312   CHECK_FLOAT_CONVERSION(G_TYPE_INT, int, -12345)
 313   CHECK_FLOAT_CONVERSION(G_TYPE_INT, int, 12345)
 314   CHECK_FLOAT_CONVERSION(G_TYPE_UINT, uint, 0)
 315   CHECK_FLOAT_CONVERSION(G_TYPE_UINT, uint, 12345)
 316   CHECK_FLOAT_CONVERSION(G_TYPE_LONG, long, -12345678)
 317   CHECK_FLOAT_CONVERSION(G_TYPE_ULONG, ulong, 12345678)
 318   CHECK_FLOAT_CONVERSION(G_TYPE_INT64, int64, -12345678)
 319   CHECK_FLOAT_CONVERSION(G_TYPE_UINT64, uint64, 12345678)
 320   CHECK_FLOAT_CONVERSION(G_TYPE_FLOAT, float, 12345678)
 321   CHECK_FLOAT_CONVERSION(G_TYPE_DOUBLE, double, 12345678)
 322
 323 #define CHECK_DOUBLE_CONVERSION(type, getter, value)                    \
 324   g_assert (g_value_type_transformable (G_TYPE_DOUBLE, type));          \
 325   g_value_init (&src, G_TYPE_DOUBLE);                                   \
 326   g_value_init (&dest, type);                                           \
 327   g_value_set_double (&src, value);                                     \
 328   g_assert (g_value_transform (&src, &dest));                           \
 329   g_assert_cmpfloat (g_value_get_##getter (&dest), ==, value);          \
 330   g_value_unset (&src);                                                 \
 331   g_value_unset (&dest);
 332
 333   CHECK_DOUBLE_CONVERSION(G_TYPE_CHAR, schar, -124)
 334   CHECK_DOUBLE_CONVERSION(G_TYPE_CHAR, schar, 124)
 335   CHECK_DOUBLE_CONVERSION(G_TYPE_UCHAR, uchar, 0)
 336   CHECK_DOUBLE_CONVERSION(G_TYPE_UCHAR, uchar, 255)
 337   CHECK_DOUBLE_CONVERSION(G_TYPE_INT, int, -12345)
 338   CHECK_DOUBLE_CONVERSION(G_TYPE_INT, int, 12345)
 339   CHECK_DOUBLE_CONVERSION(G_TYPE_UINT, uint, 0)
 340   CHECK_DOUBLE_CONVERSION(G_TYPE_UINT, uint, 12345)
 341   CHECK_DOUBLE_CONVERSION(G_TYPE_LONG, long, -12345678)
 342   CHECK_DOUBLE_CONVERSION(G_TYPE_ULONG, ulong, 12345678)
 343   CHECK_DOUBLE_CONVERSION(G_TYPE_INT64, int64, -12345678)
 344   CHECK_DOUBLE_CONVERSION(G_TYPE_UINT64, uint64, 12345678)
 345   CHECK_DOUBLE_CONVERSION(G_TYPE_FLOAT, float, 12345678)
 346   CHECK_DOUBLE_CONVERSION(G_TYPE_DOUBLE, double, 12345678)
 347
 348 #define CHECK_BOOLEAN_CONVERSION(type, setter, value)                   \
 349   g_assert (g_value_type_transformable (type, G_TYPE_BOOLEAN));         \
 350   g_value_init (&src, type);                                            \
 351   g_value_init (&dest, G_TYPE_BOOLEAN);                                 \
 352   g_value_set_##setter (&src, value);                                   \
 353   g_assert (g_value_transform (&src, &dest));                           \
 354   g_assert_cmpint (g_value_get_boolean (&dest), ==, TRUE);              \
 355   g_value_set_##setter (&src, 0);                                       \
 356   g_assert (g_value_transform (&src, &dest));                           \
 357   g_assert_cmpint (g_value_get_boolean (&dest), ==, FALSE);             \
 358   g_value_unset (&src);                                                 \
 359   g_value_unset (&dest);
 360
 361   CHECK_BOOLEAN_CONVERSION(G_TYPE_INT, int, -12345)
 362   CHECK_BOOLEAN_CONVERSION(G_TYPE_UINT, uint, 12345)
 363   CHECK_BOOLEAN_CONVERSION(G_TYPE_LONG, long, -12345678)
 364   CHECK_BOOLEAN_CONVERSION(G_TYPE_ULONG, ulong, 12345678)
 365   CHECK_BOOLEAN_CONVERSION(G_TYPE_INT64, int64, -12345678)
 366   CHECK_BOOLEAN_CONVERSION(G_TYPE_UINT64, uint64, 12345678)
 367
 368 #define CHECK_STRING_CONVERSION(int_type, setter, int_value)            \
 369   g_assert (g_value_type_transformable (int_type, G_TYPE_STRING));      \
 370   g_value_init (&src, int_type);                                        \
 371   g_value_init (&dest, G_TYPE_STRING);                                  \
 372   g_value_set_##setter (&src, int_value);                               \
 373   g_assert (g_value_transform (&src, &dest));                           \
 374   g_assert_cmpstr (g_value_get_string (&dest), ==, #int_value);         \
 375   g_value_unset (&src);                                                 \
 376   g_value_unset (&dest);
 377
 378   CHECK_STRING_CONVERSION(G_TYPE_INT, int, -12345)
 379   CHECK_STRING_CONVERSION(G_TYPE_UINT, uint, 12345)
 380   CHECK_STRING_CONVERSION(G_TYPE_LONG, long, -12345678)
 381   CHECK_STRING_CONVERSION(G_TYPE_ULONG, ulong, 12345678)
 382   CHECK_STRING_CONVERSION(G_TYPE_INT64, int64, -12345678)
 383   CHECK_STRING_CONVERSION(G_TYPE_UINT64, uint64, 12345678)
 384   CHECK_STRING_CONVERSION(G_TYPE_FLOAT, float, 0.500000)
 385   CHECK_STRING_CONVERSION(G_TYPE_DOUBLE, double, -1.234567)
 386
 387   g_assert (!g_value_type_transformable (G_TYPE_STRING, G_TYPE_CHAR));
 388   g_value_init (&src, G_TYPE_STRING);
 389   g_value_init (&dest, G_TYPE_CHAR);
 390   g_value_set_static_string (&src, "bla");
 391   g_value_set_schar (&dest, 'c');
 392   g_assert (!g_value_transform (&src, &dest));
 393   g_assert_cmpint (g_value_get_schar (&dest), ==, 'c');
 394   g_value_unset (&src);
 395   g_value_unset (&dest);
 396 }
 397
 398
 399 /* We create some dummy objects with a simple relationship:
 400  *
 401  *           GObject
 402  *          /       \
 403  * TestObjectA     TestObjectC
 404  *      |
 405  * TestObjectB
 406  *
 407  * ie: TestObjectB is a subclass of TestObjectA and TestObjectC is
 408  * related to neither.
 409  */
 410
 411 static GType test_object_a_get_type (void);
 412 typedef GObject TestObjectA; typedef GObjectClass TestObjectAClass;
 413 G_DEFINE_TYPE (TestObjectA, test_object_a, G_TYPE_OBJECT)
 414 static void test_object_a_class_init (TestObjectAClass *class) { }
 415 static void test_object_a_init (TestObjectA *a) { }
 416
 417 static GType test_object_b_get_type (void);
 418 typedef GObject TestObjectB; typedef GObjectClass TestObjectBClass;
 419 G_DEFINE_TYPE (TestObjectB, test_object_b, test_object_a_get_type ())
 420 static void test_object_b_class_init (TestObjectBClass *class) { }
 421 static void test_object_b_init (TestObjectB *b) { }
 422
 423 static GType test_object_c_get_type (void);
 424 typedef GObject TestObjectC; typedef GObjectClass TestObjectCClass;
 425 G_DEFINE_TYPE (TestObjectC, test_object_c, G_TYPE_OBJECT)
 426 static void test_object_c_class_init (TestObjectCClass *class) { }
 427 static void test_object_c_init (TestObjectC *c) { }
 428
 429 /* We create an interface and programmatically populate it with
 430  * properties of each of the above type, with various flag combinations.
 431  *
 432  * Properties are named like "type-perm" where type is 'a', 'b' or 'c'
 433  * and perm is a series of characters, indicating the permissions:
 434  *
 435  *   - 'r': readable
 436  *   - 'w': writable
 437  *   - 'c': construct
 438  *   - 'C': construct-only
 439  *
 440  * It doesn't make sense to have a property that is neither readable nor
 441  * writable.  It is also not valid to have construct or construct-only
 442  * on read-only params.  Finally, it is invalid to have both construct
 443  * and construct-only specified, so we do not consider those cases.
 444  * That gives us 7 possible permissions:
 445  *
 446  *     'r', 'w', 'rw', 'wc', 'rwc', 'wC', 'rwC'
 447  *
 448  * And 9 impossible ones:
 449  *
 450  *     '', 'c', 'rc', 'C', 'rC', 'cC', 'rcC', 'wcC', rwcC'
 451  *
 452  * For a total of 16 combinations.
 453  *
 454  * That gives a total of 48 (16 * 3) possible flag/type combinations, of
 455  * which 27 (9 * 3) are impossible to install.
 456  *
 457  * That gives 21 (7 * 3) properties that will be installed.
 458  */
 459 typedef GTypeInterface TestInterfaceInterface;
 460 static GType test_interface_get_type (void);
 461 //typedef struct _TestInterface TestInterface;
 462 G_DEFINE_INTERFACE (TestInterface, test_interface, G_TYPE_OBJECT)
 463 static void
 464 test_interface_default_init (TestInterfaceInterface *iface)
 465 {
 466   const gchar *names[] = { "a", "b", "c" };
 467   const gchar *perms[] = { NULL, "r",  "w",  "rw",
 468                            NULL, NULL, "wc", "rwc",
 469                            NULL, NULL, "wC", "rwC",
 470                            NULL, NULL, NULL, NULL };
 471   const GType types[] = { test_object_a_get_type (), test_object_b_get_type (), test_object_c_get_type () };
 472   guint i, j;
 473
 474   for (i = 0; i < G_N_ELEMENTS (types); i++)
 475     for (j = 0; j < G_N_ELEMENTS (perms); j++)
 476       {
 477         gchar prop_name[10];
 478         GParamSpec *pspec;
 479
 480         if (perms[j] == NULL)
 481           {
 482             if (!g_test_undefined ())
 483               continue;
 484
 485             /* we think that this is impossible.  make sure. */
 486             pspec = g_param_spec_object ("xyz", "xyz", "xyz", types[i], j);
 487
 488             g_test_expect_message (G_LOG_DOMAIN, G_LOG_LEVEL_CRITICAL,
 489                                    "*assertion*pspec->flags*failed*");
 490             g_object_interface_install_property (iface, pspec);
 491             g_test_assert_expected_messages ();
 492
 493             g_param_spec_unref (pspec);
 494             continue;
 495           }
 496
 497         /* install the property */
 498         g_snprintf (prop_name, sizeof prop_name, "%s-%s", names[i], perms[j]);
 499         pspec = g_param_spec_object (prop_name, prop_name, prop_name, types[i], j);
 500         g_object_interface_install_property (iface, pspec);
 501       }
 502 }
 503
 504 /* We now have 21 properties.  Each property may be correctly
 505  * implemented with the following types:
 506  *
 507  *   Properties         Valid Types       Reason
 508  *
 509  *   a-r                a, b              Read only can provide subclasses
 510  *   a-w, wc, wC        a, GObject        Write only can accept superclasses
 511  *   a-rw, rwc, rwC     a                 Read-write must be exactly equal
 512  *
 513  *   b-r                b                 (as above)
 514  *   b-w, wc, wC        b, a, GObject
 515  *   b-rw, rwc, rwC     b
 516  *
 517  *   c-r                c                 (as above)
 518  *   c-wo, wc, wC       c, GObject
 519  *   c-rw, rwc, rwC     c
 520  *
 521  * We can express this in a 48-by-4 table where each row represents an
 522  * installed property and each column represents a type.  The value in
 523  * the table represents if it is valid to subclass the row's property
 524  * with the type of the column:
 525  *
 526  *   - 0:   invalid because the interface property doesn't exist (invalid flags)
 527  *   - 'v': valid
 528  *   - '=': invalid because of the type not being exactly equal
 529  *   - '<': invalid because of the type not being a subclass
 530  *   - '>': invalid because of the type not being a superclass
 531  *
 532  * We organise the table by interface property type ('a', 'b', 'c') then
 533  * by interface property flags.
 534  */
 535
 536 static gint valid_impl_types[48][4] = {
 537                     /* a    b    c    GObject */
 538     /* 'a-' */       { 0, },
 539     /* 'a-r' */      { 'v', 'v', '<', '<' },
 540     /* 'a-w' */      { 'v', '>', '>', 'v' },
 541     /* 'a-rw' */     { 'v', '=', '=', '=' },
 542     /* 'a-c */       { 0, },
 543     /* 'a-rc' */     { 0, },
 544     /* 'a-wc' */     { 'v', '>', '>', 'v' },
 545     /* 'a-rwc' */    { 'v', '=', '=', '=' },
 546     /* 'a-C */       { 0, },
 547     /* 'a-rC' */     { 0, },
 548     /* 'a-wC' */     { 'v', '>', '>', 'v' },
 549     /* 'a-rwC' */    { 'v', '=', '=', '=' },
 550     /* 'a-cC */      { 0, },
 551     /* 'a-rcC' */    { 0, },
 552     /* 'a-wcC' */    { 0, },
 553     /* 'a-rwcC' */   { 0, },
 554
 555     /* 'b-' */       { 0, },
 556     /* 'b-r' */      { '<', 'v', '<', '<' },
 557     /* 'b-w' */      { 'v', 'v', '>', 'v' },
 558     /* 'b-rw' */     { '=', 'v', '=', '=' },
 559     /* 'b-c */       { 0, },
 560     /* 'b-rc' */     { 0, },
 561     /* 'b-wc' */     { 'v', 'v', '>', 'v' },
 562     /* 'b-rwc' */    { '=', 'v', '=', '=' },
 563     /* 'b-C */       { 0, },
 564     /* 'b-rC' */     { 0, },
 565     /* 'b-wC' */     { 'v', 'v', '>', 'v' },
 566     /* 'b-rwC' */    { '=', 'v', '=', '=' },
 567     /* 'b-cC */      { 0, },
 568     /* 'b-rcC' */    { 0, },
 569     /* 'b-wcC' */    { 0, },
 570     /* 'b-rwcC' */   { 0, },
 571
 572     /* 'c-' */       { 0, },
 573     /* 'c-r' */      { '<', '<', 'v', '<' },
 574     /* 'c-w' */      { '>', '>', 'v', 'v' },
 575     /* 'c-rw' */     { '=', '=', 'v', '=' },
 576     /* 'c-c */       { 0, },
 577     /* 'c-rc' */     { 0, },
 578     /* 'c-wc' */     { '>', '>', 'v', 'v' },
 579     /* 'c-rwc' */    { '=', '=', 'v', '=' },
 580     /* 'c-C */       { 0, },
 581     /* 'c-rC' */     { 0, },
 582     /* 'c-wC' */     { '>', '>', 'v', 'v' },
 583     /* 'c-rwC' */    { '=', '=', 'v', '=' },
 584     /* 'c-cC */      { 0, },
 585     /* 'c-rcC' */    { 0, },
 586     /* 'c-wcC' */    { 0, },
 587     /* 'c-rwcC' */   { 0, }
 588 };
 589
 590 /* We also try to change the flags.  We must ensure that all
 591  * implementations provide all functionality promised by the interface.
 592  * We must therefore never remove readability or writability (but we can
 593  * add them).  Construct-only is a restrictions that applies to
 594  * writability, so we can never add it unless writability was never
 595  * present in the first place, in which case "writable at construct
 596  * only" is still better than "not writable".
 597  *
 598  * The 'construct' flag is of interest only to the implementation.  It
 599  * may be changed at any time.
 600  *
 601  *   Properties         Valid Access      Reason
 602  *
 603  *   *-r                r, rw, rwc, rwC   Must keep readable, but can restrict newly-added writable
 604  *   *-w                w, rw, rwc        Must keep writable unrestricted
 605  *   *-rw               rw, rwc           Must not add any restrictions
 606  *   *-rwc              rw, rwc           Must not add any restrictions
 607  *   *-rwC              rw, rwc, rwC      Can remove 'construct-only' restriction
 608  *   *-wc               rwc, rw, w, wc    Can add readability
 609  *   *-wC               rwC, rw, w, wC    Can add readability or remove 'construct only' restriction
 610  *                        rwc, wc
 611  *
 612  * We can represent this with a 16-by-16 table.  The rows represent the
 613  * flags of the property on the interface.  The columns is the flags to
 614  * try to use when overriding the property.  The cell contents are:
 615  *
 616  *   - 0:   invalid because the interface property doesn't exist (invalid flags)
 617  *   - 'v': valid
 618  *   - 'i': invalid because the implementation flags are invalid
 619  *   - 'f': invalid because of the removal of functionality
 620  *   - 'r': invalid because of the addition of restrictions (ie: construct-only)
 621  *
 622  * We also ensure that removal of functionality is reported before
 623  * addition of restrictions, since this is a more basic problem.
 624  */
 625 static gint valid_impl_flags[16][16] = {
 626                  /* ''   r    w    rw   c    rc   wc   rwc  C    rC   wC   rwC  cC   rcC  wcC  rwcC */
 627     /* '*-' */    { 0, },
 628     /* '*-r' */   { 'i', 'v', 'f', 'v', 'i', 'i', 'f', 'v', 'i', 'i', 'f', 'v', 'i', 'i', 'i', 'i' },
 629     /* '*-w' */   { 'i', 'f', 'v', 'v', 'i', 'i', 'v', 'v', 'i', 'i', 'r', 'r', 'i', 'i', 'i', 'i' },
 630     /* '*-rw' */  { 'i', 'f', 'f', 'v', 'i', 'i', 'f', 'v', 'i', 'i', 'f', 'r', 'i', 'i', 'i', 'i' },
 631     /* '*-c */    { 0, },
 632     /* '*-rc' */  { 0, },
 633     /* '*-wc' */  { 'i', 'f', 'v', 'v', 'i', 'i', 'v', 'v', 'i', 'i', 'r', 'r', 'i', 'i', 'i', 'i' },
 634     /* '*-rwc' */ { 'i', 'f', 'f', 'v', 'i', 'i', 'f', 'v', 'i', 'i', 'f', 'r', 'i', 'i', 'i', 'i' },
 635     /* '*-C */    { 0, },
 636     /* '*-rC' */  { 0, },
 637     /* '*-wC' */  { 'i', 'f', 'v', 'v', 'i', 'i', 'v', 'v', 'i', 'i', 'v', 'v', 'i', 'i', 'i', 'i' },
 638     /* '*-rwC' */ { 'i', 'f', 'f', 'v', 'i', 'i', 'f', 'v', 'i', 'i', 'f', 'v', 'i', 'i', 'i', 'i' },
 639 };
 640
 641 static guint change_this_flag;
 642 static guint change_this_type;
 643 static guint use_this_flag;
 644 static guint use_this_type;
 645
 646 typedef GObjectClass TestImplementationClass;
 647 typedef GObject TestImplementation;
 648
 649 static void test_implementation_init (TestImplementation *impl) { }
 650 static void test_implementation_iface_init (TestInterfaceInterface *iface) { }
 651
 652 static GType test_implementation_get_type (void);
 653 G_DEFINE_TYPE_WITH_CODE (TestImplementation, test_implementation, G_TYPE_OBJECT,
 654                          G_IMPLEMENT_INTERFACE (test_interface_get_type (), test_implementation_iface_init))
 655
 656 static void test_implementation_class_init (TestImplementationClass *class)
 657 {
 658   const gchar *names[] = { "a", "b", "c" };
 659   const gchar *perms[] = { NULL, "r",  "w",  "rw",
 660                            NULL, NULL, "wc", "rwc",
 661                            NULL, NULL, "wC", "rwC",
 662                            NULL, NULL, NULL, NULL };
 663   const GType types[] = { test_object_a_get_type (), test_object_b_get_type (),
 664                           test_object_c_get_type (), G_TYPE_OBJECT };
 665   gchar prop_name[10];
 666   GParamSpec *pspec;
 667   guint i, j;
 668
 669   class->get_property = GINT_TO_POINTER (1);
 670   class->set_property = GINT_TO_POINTER (1);
 671
 672   /* Install all of the non-modified properties or else GObject will
 673    * complain about non-implemented properties.
 674    */
 675   for (i = 0; i < 3; i++)
 676     for (j = 0; j < G_N_ELEMENTS (perms); j++)
 677       {
 678         if (i == change_this_type && j == change_this_flag)
 679           continue;
 680
 681         if (perms[j] != NULL)
 682           {
 683             /* override the property without making changes */
 684             g_snprintf (prop_name, sizeof prop_name, "%s-%s", names[i], perms[j]);
 685             g_object_class_override_property (class, 1, prop_name);
 686           }
 687       }
 688
 689   /* Now try installing our modified property */
 690   if (perms[change_this_flag] == NULL)
 691     g_error ("Interface property does not exist");
 692
 693   g_snprintf (prop_name, sizeof prop_name, "%s-%s", names[change_this_type], perms[change_this_flag]);
 694   pspec = g_param_spec_object (prop_name, prop_name, prop_name, types[use_this_type], use_this_flag);
 695   g_object_class_install_property (class, 1, pspec);
 696 }
 697
 698 typedef struct {
 699   gint change_this_flag;
 700   gint change_this_type;
 701   gint use_this_flag;
 702   gint use_this_type;
 703 } TestParamImplementData;
 704
 705 static void
 706 test_param_implement_child (gconstpointer user_data)
 707 {
 708   TestParamImplementData *data = (gpointer) user_data;
 709
 710   /* GObject oddity: GObjectClass must be initialised before we can
 711    * initialise a GTypeInterface.
 712    */
 713   g_type_class_ref (G_TYPE_OBJECT);
 714
 715   /* Bring up the interface first. */
 716   g_type_default_interface_ref (test_interface_get_type ());
 717
 718   /* Copy the flags into the global vars so
 719    * test_implementation_class_init() will see them.
 720    */
 721   change_this_flag = data->change_this_flag;
 722   change_this_type = data->change_this_type;
 723   use_this_flag = data->use_this_flag;
 724   use_this_type = data->use_this_type;
 725
 726   g_type_class_ref (test_implementation_get_type ());
 727 }
 728
 729 static void
 730 test_param_implement (void)
 731 {
 732   gchar *test_path;
 733
 734   for (change_this_flag = 0; change_this_flag < 16; change_this_flag++)
 735     for (change_this_type = 0; change_this_type < 3; change_this_type++)
 736       for (use_this_flag = 0; use_this_flag < 16; use_this_flag++)
 737         for (use_this_type = 0; use_this_type < 4; use_this_type++)
 738           {
 739             if (!g_test_undefined ())
 740               {
 741                 /* only test the valid (defined) cases, e.g. under valgrind */
 742                 if (valid_impl_flags[change_this_flag][use_this_flag] != 'v')
 743                   continue;
 744
 745                 if (valid_impl_types[change_this_type * 16 + change_this_flag][use_this_type] != 'v')
 746                   continue;
 747               }
 748
 749             test_path = g_strdup_printf ("/param/implement/subprocess/%d-%d-%d-%d",
 750                                          change_this_flag, change_this_type,
 751                                          use_this_flag, use_this_type);
 752             g_test_trap_subprocess (test_path, G_TIME_SPAN_SECOND, 0);
 753             g_free (test_path);
 754
 755             /* We want to ensure that any flags mismatch problems are reported first. */
 756             switch (valid_impl_flags[change_this_flag][use_this_flag])
 757               {
 758               case 0:
 759                 /* make sure the other table agrees */
 760                 g_assert (valid_impl_types[change_this_type * 16 + change_this_flag][use_this_type] == 0);
 761                 g_test_trap_assert_failed ();
 762                 g_test_trap_assert_stderr ("*Interface property does not exist*");
 763                 continue;
 764
 765               case 'i':
 766                 g_test_trap_assert_failed ();
 767                 g_test_trap_assert_stderr ("*g_object_class_install_property*");
 768                 continue;
 769
 770               case 'f':
 771                 g_test_trap_assert_failed ();
 772                 g_test_trap_assert_stderr ("*remove functionality*");
 773                 continue;
 774
 775               case 'r':
 776                 g_test_trap_assert_failed ();
 777                 g_test_trap_assert_stderr ("*introduce additional restrictions*");
 778                 continue;
 779
 780               case 'v':
 781                 break;
 782               }
 783
 784             /* Next, we check if there should have been a type error. */
 785             switch (valid_impl_types[change_this_type * 16 + change_this_flag][use_this_type])
 786               {
 787               case 0:
 788                 /* this should have been caught above */
 789                 g_assert_not_reached ();
 790
 791               case '=':
 792                 g_test_trap_assert_failed ();
 793                 g_test_trap_assert_stderr ("*exactly equal*");
 794                 continue;
 795
 796               case '<':
 797                 g_test_trap_assert_failed ();
 798                 g_test_trap_assert_stderr ("*equal to or more restrictive*");
 799                 continue;
 800
 801               case '>':
 802                 g_test_trap_assert_failed ();
 803                 g_test_trap_assert_stderr ("*equal to or less restrictive*");
 804                 continue;
 805
 806               case 'v':
 807                 break;
 808               }
 809
 810             g_test_trap_assert_passed ();
 811           }
 812 }
 813
 814 static void
 815 test_param_default (void)
 816 {
 817   GParamSpec *param;
 818   const GValue *def;
 819
 820   param = g_param_spec_int ("my-int", "My Int", "Blurb", 0, 20, 10, G_PARAM_READWRITE);
 821   def = g_param_spec_get_default_value (param);
 822
 823   g_assert (G_VALUE_HOLDS (def, G_TYPE_INT));
 824   g_assert_cmpint (g_value_get_int (def), ==, 10);
 825
 826   g_param_spec_unref (param);
 827 }
 828
 829 int
 830 main (int argc, char *argv[])
 831 {
 832   TestParamImplementData data, *test_data;
 833   gchar *test_path;
 834
 835   g_test_init (&argc, &argv, NULL);
 836
 837   g_test_add_func ("/param/value", test_param_value);
 838   g_test_add_func ("/param/strings", test_param_strings);
 839   g_test_add_func ("/param/qdata", test_param_qdata);
 840   g_test_add_func ("/param/validate", test_param_validate);
 841   g_test_add_func ("/param/convert", test_param_convert);
 842
 843   if (g_test_slow ())
 844     g_test_add_func ("/param/implement", test_param_implement);
 845
 846   for (data.change_this_flag = 0; data.change_this_flag < 16; data.change_this_flag++)
 847     for (data.change_this_type = 0; data.change_this_type < 3; data.change_this_type++)
 848       for (data.use_this_flag = 0; data.use_this_flag < 16; data.use_this_flag++)
 849         for (data.use_this_type = 0; data.use_this_type < 4; data.use_this_type++)
 850           {
 851             test_path = g_strdup_printf ("/param/implement/subprocess/%d-%d-%d-%d",
 852                                          data.change_this_flag, data.change_this_type,
 853                                          data.use_this_flag, data.use_this_type);
 854             test_data = g_memdup (&data, sizeof (TestParamImplementData));
 855             g_test_add_data_func_full (test_path, test_data, test_param_implement_child, g_free);
 856             g_free (test_path);
 857           }
 858
 859   g_test_add_func ("/value/transform", test_value_transform);
 860   g_test_add_func ("/param/default", test_param_default);
 861
 862   return g_test_run ();
 863 }