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/*
* Copyright 2015 Canonical Limited
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*
* 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.
*
* See the included COPYING file for more information.
*
* Author: Allison Ryan Lortie <desrt@desrt.ca>
*/
#include <glib.h>
typedef struct
{
gboolean success;
guint64 c, a, b;
} Case;
static void
test_checked_guint_add (void)
{
static const Case cases[] = {
/* success c = a + b */
{ TRUE, 0, 0, 0 },
{ TRUE, G_MAXINT, G_MAXINT, 0 },
{ TRUE, G_MAXINT, 0, G_MAXINT },
{ TRUE, G_MAXUINT, G_MAXUINT, 0 },
{ TRUE, G_MAXUINT, 0, G_MAXUINT },
{ TRUE, G_MAXUINT - 1, G_MAXINT, G_MAXINT },
{ FALSE, 0, G_MAXUINT, 1 },
{ FALSE, 0, 1, G_MAXUINT },
{ FALSE, 0, G_MAXUINT, G_MAXUINT }
};
guint i;
for (i = 0; i < G_N_ELEMENTS (cases); i++)
{
guint result;
g_assert_cmpuint (cases[i].success, ==, g_uint_checked_add (&result, cases[i].a, cases[i].b));
if (cases[i].success)
g_assert_cmpuint (cases[i].c, ==, result);
}
}
static void
test_checked_guint_mul (void)
{
static const Case cases[] = {
/* success c = a * b */
{ TRUE, 0, 0, 0 },
{ TRUE, 0, G_MAXINT, 0 },
{ TRUE, G_MAXINT, G_MAXINT, 1 },
{ TRUE, 0, G_MAXUINT, 0 },
{ TRUE, G_MAXUINT, G_MAXUINT, 1 },
{ TRUE, 2 * (guint) G_MAXINT, 2, G_MAXINT },
{ TRUE, 2 * (guint) G_MAXINT, G_MAXINT, 2 },
{ FALSE, 0, 3, G_MAXINT },
{ FALSE, 0, G_MAXINT, 3 }
};
guint i;
for (i = 0; i < G_N_ELEMENTS (cases); i++)
{
guint result;
g_assert_cmpuint (cases[i].success, ==, g_uint_checked_mul (&result, cases[i].a, cases[i].b));
if (cases[i].success)
g_assert_cmpuint (cases[i].c, ==, result);
}
}
static void
test_checked_guint64_add (void)
{
static const Case cases[] = {
/* success c = a + b */
{ TRUE, 0, 0, 0 },
{ TRUE, G_MAXINT64, G_MAXINT64, 0 },
{ TRUE, G_MAXINT64, 0, G_MAXINT64 },
{ TRUE, G_MAXUINT64, G_MAXUINT64, 0 },
{ TRUE, G_MAXUINT64, 0, G_MAXUINT64 },
{ TRUE, G_MAXUINT64 - 1, G_MAXINT64, G_MAXINT64 },
{ FALSE, 0, G_MAXUINT64, 1 },
{ FALSE, 0, 1, G_MAXUINT64 },
{ FALSE, 0, G_MAXUINT64, G_MAXUINT64 }
};
guint i;
for (i = 0; i < G_N_ELEMENTS (cases); i++)
{
guint64 result;
g_assert_cmpuint (cases[i].success, ==, g_uint64_checked_add (&result, cases[i].a, cases[i].b));
if (cases[i].success)
g_assert_cmpuint (cases[i].c, ==, result);
}
}
static void
test_checked_guint64_mul (void)
{
static const Case cases[] = {
/* success c = a * b */
{ TRUE, 0, 0, 0 },
{ TRUE, 0, G_MAXINT64, 0 },
{ TRUE, G_MAXINT64, G_MAXINT64, 1 },
{ TRUE, 0, G_MAXUINT64, 0 },
{ TRUE, G_MAXUINT64, G_MAXUINT64, 1 },
{ TRUE, 2 * (guint64) G_MAXINT64, 2, G_MAXINT64 },
{ TRUE, 2 * (guint64) G_MAXINT64, G_MAXINT64, 2 },
{ FALSE, 0, 3, G_MAXINT64 },
{ FALSE, 0, G_MAXINT64, 3 }
};
guint i;
for (i = 0; i < G_N_ELEMENTS (cases); i++)
{
guint64 result;
g_assert_cmpuint (cases[i].success, ==, g_uint64_checked_mul (&result, cases[i].a, cases[i].b));
if (cases[i].success)
g_assert_cmpuint (cases[i].c, ==, result);
}
}
static void
test_checked_gsize_add (void)
{
static const Case cases[] = {
/* success c = a + b */
{ TRUE, 0, 0, 0 },
{ TRUE, G_MAXSSIZE, G_MAXSSIZE, 0 },
{ TRUE, G_MAXSSIZE, 0, G_MAXSSIZE },
{ TRUE, G_MAXSIZE, G_MAXSIZE, 0 },
{ TRUE, G_MAXSIZE, 0, G_MAXSIZE },
{ TRUE, G_MAXSIZE - 1, G_MAXSSIZE, G_MAXSSIZE },
{ FALSE, 0, G_MAXSIZE, 1 },
{ FALSE, 0, 1, G_MAXSIZE },
{ FALSE, 0, G_MAXSIZE, G_MAXSIZE }
};
guint i;
for (i = 0; i < G_N_ELEMENTS (cases); i++)
{
gsize result;
g_assert_cmpuint (cases[i].success, ==, g_size_checked_add (&result, cases[i].a, cases[i].b));
if (cases[i].success)
g_assert_cmpuint (cases[i].c, ==, result);
}
}
static void
test_checked_gsize_mul (void)
{
static const Case cases[] = {
/* success c = a * b */
{ TRUE, 0, 0, 0 },
{ TRUE, 0, G_MAXSSIZE, 0 },
{ TRUE, G_MAXSSIZE, G_MAXSSIZE, 1 },
{ TRUE, 0, G_MAXSIZE, 0 },
{ TRUE, G_MAXSIZE, G_MAXSIZE, 1 },
{ TRUE, 2 * (gsize) G_MAXSSIZE, 2, G_MAXSSIZE },
{ TRUE, 2 * (gsize) G_MAXSSIZE, G_MAXSSIZE, 2 },
{ FALSE, 0, 3, G_MAXSSIZE },
{ FALSE, 0, G_MAXSSIZE, 3 }
};
guint i;
for (i = 0; i < G_N_ELEMENTS (cases); i++)
{
gsize result;
g_assert_cmpuint (cases[i].success, ==, g_size_checked_mul (&result, cases[i].a, cases[i].b));
if (cases[i].success)
g_assert_cmpuint (cases[i].c, ==, result);
}
}
int
main (int argc, char **argv)
{
g_test_init (&argc, &argv, NULL);
g_test_add_func ("/glib/checked-math/guint-add", test_checked_guint_add);
g_test_add_func ("/glib/checked-math/guint-mul", test_checked_guint_mul);
g_test_add_func ("/glib/checked-math/guint64-add", test_checked_guint64_add);
g_test_add_func ("/glib/checked-math/guint64-mul", test_checked_guint64_mul);
g_test_add_func ("/glib/checked-math/gsize-add", test_checked_gsize_add);
g_test_add_func ("/glib/checked-math/gsize-mul", test_checked_gsize_mul);
return g_test_run ();
}
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