ucx: test/test_utils.cpp@dfd0403ff8b6

     1 /*

     2  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.

     3  *

     4  * Copyright 2021 Mike Becker, Olaf Wintermann All rights reserved.

     5  *

     6  * Redistribution and use in source and binary forms, with or without

     7  * modification, are permitted provided that the following conditions are met:

     8  *

     9  *   1. Redistributions of source code must retain the above copyright

    10  *      notice, this list of conditions and the following disclaimer.

    11  *

    12  *   2. Redistributions in binary form must reproduce the above copyright

    13  *      notice, this list of conditions and the following disclaimer in the

    14  *      documentation and/or other materials provided with the distribution.

    15  *

    16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

    17  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

    18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

    19  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE

    20  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

    21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

    22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

    23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

    24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

    25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

    26  * POSSIBILITY OF SUCH DAMAGE.

    27  */

    29 #include "cx/utils.h"

    31 #include <gtest/gtest.h>

    33 TEST(Utils, ForN) {

    34     unsigned j;

    35     j = 0;

    36     cx_for_n(i, 50) {

    37         EXPECT_EQ(i, j);

    38         j++;

    39     }

    40 }

    42 TEST(Utils, swap_ptr) {

    43     int i = 5;

    44     int j = 8;

    45     int *ip = &i;

    46     int *jp = &j;

    47     cx_swap_ptr(ip, jp);

    48     EXPECT_EQ(ip, &j);

    49     EXPECT_EQ(jp, &i);

    50 }

    52 TEST(Utils, szmul) {

    53     size_t r;

    54     int e;

    55     e = cx_szmul(5, 7, &r);

    56     EXPECT_EQ(0, e);

    57     EXPECT_EQ(35, r);

    59     size_t s = SIZE_MAX & ~3;

    61     e = cx_szmul(s / 4, 2, &r);

    62     EXPECT_EQ(0, e);

    63     EXPECT_EQ(s / 2, r);

    64     e = cx_szmul(2, s / 4, &r);

    65     EXPECT_EQ(0, e);

    66     EXPECT_EQ(s / 2, r);

    68     e = cx_szmul(s / 4, 4, &r);

    69     EXPECT_EQ(0, e);

    70     EXPECT_EQ(s, r);

    72     e = cx_szmul(4, s / 4, &r);

    73     EXPECT_EQ(0, e);

    74     EXPECT_EQ(s, r);

    76     e = cx_szmul(s / 4, 5, &r);

    77     EXPECT_NE(0, e);

    79     e = cx_szmul(5, s / 4, &r);

    80     EXPECT_NE(0, e);

    82     e = cx_szmul(SIZE_MAX - 4, 0, &r);

    83     EXPECT_EQ(0, e);

    84     EXPECT_EQ(0, r);

    86     e = cx_szmul(0, SIZE_MAX - 1, &r);

    87     EXPECT_EQ(0, e);

    88     EXPECT_EQ(0, r);

    90     e = cx_szmul(SIZE_MAX, 0, &r);

    91     EXPECT_EQ(0, e);

    92     EXPECT_EQ(0, r);

    94     e = cx_szmul(0, SIZE_MAX, &r);

    95     EXPECT_EQ(0, e);

    96     EXPECT_EQ(0, r);

    98     e = cx_szmul(0, 0, &r);

    99     EXPECT_EQ(0, e);

   100     EXPECT_EQ(0, r);

   101 }

   103 #ifdef CX_SZMUL_BUILTIN

   105 // also test the custom implementation

   106 struct Utils_szmul_impl : ::testing::Test {

   107 #undef CX_SZMUL_BUILTIN

   109 #include "../src/utils.c"

   111 #define CX_SZMUL_BUILTIN

   112 };

   114 TEST_F(Utils_szmul_impl, Test) {

   115     size_t r;

   116     int e;

   117     e = cx_szmul_impl(5, 7, &r);

   118     EXPECT_EQ(0, e);

   119     EXPECT_EQ(35, r);

   121     size_t s = SIZE_MAX & ~3;

   123     e = cx_szmul_impl(s / 4, 2, &r);

   124     EXPECT_EQ(0, e);

   125     EXPECT_EQ(s / 2, r);

   126     e = cx_szmul_impl(2, s / 4, &r);

   127     EXPECT_EQ(0, e);

   128     EXPECT_EQ(s / 2, r);

   130     e = cx_szmul_impl(s / 4, 4, &r);

   131     EXPECT_EQ(0, e);

   132     EXPECT_EQ(s, r);

   134     e = cx_szmul_impl(4, s / 4, &r);

   135     EXPECT_EQ(0, e);

   136     EXPECT_EQ(s, r);

   138     e = cx_szmul_impl(s / 4, 5, &r);

   139     EXPECT_NE(0, e);

   141     e = cx_szmul_impl(5, s / 4, &r);

   142     EXPECT_NE(0, e);

   144     e = cx_szmul_impl(SIZE_MAX - 4, 0, &r);

   145     EXPECT_EQ(0, e);

   146     EXPECT_EQ(0, r);

   148     e = cx_szmul_impl(0, SIZE_MAX - 1, &r);

   149     EXPECT_EQ(0, e);

   150     EXPECT_EQ(0, r);

   152     e = cx_szmul_impl(SIZE_MAX, 0, &r);

   153     EXPECT_EQ(0, e);

   154     EXPECT_EQ(0, r);

   156     e = cx_szmul_impl(0, SIZE_MAX, &r);

   157     EXPECT_EQ(0, e);

   158     EXPECT_EQ(0, r);

   160     e = cx_szmul_impl(0, 0, &r);

   161     EXPECT_EQ(0, e);

   162     EXPECT_EQ(0, r);

   163 }

   165 #endif // CX_SZMUL_BUILTIN

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