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/* GLib testing framework examples and tests
*
* Copyright © 2018 Endless Mobile, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General
* Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
*
* Author: Philip Withnall <withnall@endlessm.com>
*/
#include <glib.h>
/* Test that G_STATIC_ASSERT_EXPR can be used as an expression */
static void
test_assert_static (void)
{
G_STATIC_ASSERT (4 == 4);
if (G_STATIC_ASSERT_EXPR (1 == 1), sizeof (gchar) == 2)
g_assert_not_reached ();
}
/* Test G_ALIGNOF() gives the same results as the G_STRUCT_OFFSET fallback. This
* should be the minimal alignment for the given type.
*
* This is necessary because the implementation of G_ALIGNOF() varies depending
* on the compiler in use. We want all implementations to be consistent.
*
* In the case that the compiler uses the G_STRUCT_OFFSET fallback, this test
* is a no-op. */
static void
test_alignof_fallback (void)
{
#define check_alignof(type) \
g_assert_cmpint (G_ALIGNOF (type), ==, G_STRUCT_OFFSET (struct { char a; type b; }, b))
check_alignof (char);
check_alignof (int);
check_alignof (float);
check_alignof (double);
check_alignof (struct { char a; int b; });
}
static void
test_struct_sizeof_member (void)
{
G_STATIC_ASSERT (G_SIZEOF_MEMBER (struct { char a; int b; }, a) == sizeof (char));
g_assert_cmpint (G_SIZEOF_MEMBER (struct { char a; int b; }, b), ==, sizeof (int));
}
int
main (int argc,
char *argv[])
{
g_test_init (&argc, &argv, NULL);
g_test_add_func ("/alignof/fallback", test_alignof_fallback);
g_test_add_func ("/assert/static", test_assert_static);
g_test_add_func ("/struct/sizeof_member", test_struct_sizeof_member);
return g_test_run ();
}
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