+#define g_assert_true(expr) do { if G_LIKELY (expr) ; else \
+ g_assertion_message (G_LOG_DOMAIN, __FILE__, __LINE__, G_STRFUNC, \
+ "'" #expr "' should be TRUE"); \
+ } while (0)
+#define g_assert_false(expr) do { if G_LIKELY (!(expr)) ; else \
+ g_assertion_message (G_LOG_DOMAIN, __FILE__, __LINE__, G_STRFUNC, \
+ "'" #expr "' should be FALSE"); \
+ } while (0)
+#define g_assert_null(expr) do { if G_LIKELY ((expr) == NULL) ; else \
+ g_assertion_message (G_LOG_DOMAIN, __FILE__, __LINE__, G_STRFUNC, \
+ "'" #expr "' should be NULL"); \
+ } while (0)
+#define g_assert_nonnull(expr) do { if G_LIKELY ((expr) != NULL) ; else \
+ g_assertion_message (G_LOG_DOMAIN, __FILE__, __LINE__, G_STRFUNC, \
+ "'" #expr "' should not be NULL"); \
+ } while (0)