source: mainline/uspace/lib/c/test/casting.c

Last change on this file was 32236e5, checked in by Vojtech Horky <vojtech.horky@…>, 6 years ago

Add can_cast_size_t_to_int

There are already several places where we check that it is okay to cast
size_t value to int. This function should unify these places to replace
non-trivial code with a simple function call.

Also added a (hopefully correct) test for this function.

More functions should be added on-demand basis.

  • Property mode set to 100644
File size: 2.0 KB
Line 
1/*
2 * Copyright (c) 2019 Vojtech Horky
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#include <pcut/pcut.h>
30#include <limits.h>
31#include <types/casting.h>
32
33PCUT_INIT;
34
35PCUT_TEST_SUITE(casting);
36
37/*
38 * Following tests checks functionality of can_cast_size_t_to_int.
39 */
40
41PCUT_TEST(size_t_to_int_with_small)
42{
43 PCUT_ASSERT_TRUE(can_cast_size_t_to_int(0));
44 PCUT_ASSERT_TRUE(can_cast_size_t_to_int(128));
45}
46
47PCUT_TEST(size_t_to_int_with_biggest_int)
48{
49 PCUT_ASSERT_TRUE(can_cast_size_t_to_int(INT_MAX));
50}
51
52PCUT_TEST(size_t_to_int_with_biggest_size_t)
53{
54 PCUT_ASSERT_FALSE(can_cast_size_t_to_int(SIZE_MAX));
55}
56
57PCUT_EXPORT(casting);
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