universe@633: /*
universe@633:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
universe@633:  *
universe@633:  * Copyright 2021 Mike Becker, Olaf Wintermann All rights reserved.
universe@633:  *
universe@633:  * Redistribution and use in source and binary forms, with or without
universe@633:  * modification, are permitted provided that the following conditions are met:
universe@633:  *
universe@633:  *   1. Redistributions of source code must retain the above copyright
universe@633:  *      notice, this list of conditions and the following disclaimer.
universe@633:  *
universe@633:  *   2. Redistributions in binary form must reproduce the above copyright
universe@633:  *      notice, this list of conditions and the following disclaimer in the
universe@633:  *      documentation and/or other materials provided with the distribution.
universe@633:  *
universe@633:  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
universe@633:  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
universe@633:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
universe@633:  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
universe@633:  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
universe@633:  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
universe@633:  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
universe@633:  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
universe@633:  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
universe@633:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
universe@633:  * POSSIBILITY OF SUCH DAMAGE.
universe@633:  */
universe@633: 
universe@633: #include "cx/utils.h"
universe@633: 
universe@674: #include "cx/buffer.h"
universe@674: 
universe@633: #include <gtest/gtest.h>
universe@633: 
universe@674: TEST(Utils, cx_stream_bncopy) {
universe@674:     CxBuffer source, target;
universe@674:     char sbuf[32], tbuf[32];
universe@674:     memset(tbuf, 0, 32);
universe@674:     cxBufferInit(&source, sbuf, 32, nullptr, 0);
universe@674:     cxBufferInit(&target, tbuf, 32, nullptr, 0);
universe@674:     cxBufferPutString(&source, "This is a stream copy test.");
universe@674:     cxBufferSeek(&source, 0, SEEK_SET);
universe@674: 
universe@674:     char tmp[4];
universe@674:     size_t result = cx_stream_bncopy(&source, &target,
universe@674:                                      (cx_read_func) cxBufferRead,
universe@674:                                      (cx_write_func) cxBufferWrite,
universe@674:                                      tmp, 4, 20);
universe@674:     EXPECT_EQ(20, result);
universe@674:     EXPECT_EQ(20, target.size);
universe@674:     EXPECT_STREQ("This is a stream cop\0", tbuf);
universe@674: 
universe@674:     result = cx_stream_bcopy(&source, &target,
universe@674:                              (cx_read_func) cxBufferRead,
universe@674:                              (cx_write_func) cxBufferWrite,
universe@674:                              nullptr, 16);
universe@674: 
universe@674:     EXPECT_EQ(7, result);
universe@674:     EXPECT_EQ(27, target.size);
universe@674:     EXPECT_STREQ("This is a stream copy test.\0", tbuf);
universe@674: 
universe@674:     cxBufferDestroy(&source);
universe@674:     cxBufferDestroy(&target);
universe@674: }
universe@674: 
universe@674: TEST(Utils, cx_stream_ncopy) {
universe@674:     CxBuffer source, target;
universe@674:     char sbuf[32], tbuf[32];
universe@674:     memset(tbuf, 0, 32);
universe@674:     cxBufferInit(&source, sbuf, 32, nullptr, 0);
universe@674:     cxBufferInit(&target, tbuf, 32, nullptr, 0);
universe@674:     cxBufferPutString(&source, "This is a stream copy test.");
universe@674:     cxBufferSeek(&source, 0, SEEK_SET);
universe@674: 
universe@674:     size_t result = cx_stream_ncopy(&source, &target,
universe@674:                                     (cx_read_func) cxBufferRead,
universe@674:                                     (cx_write_func) cxBufferWrite,
universe@674:                                     20);
universe@674:     EXPECT_EQ(20, result);
universe@674:     EXPECT_EQ(20, target.size);
universe@674:     EXPECT_STREQ("This is a stream cop\0", tbuf);
universe@674: 
universe@674:     result = cx_stream_copy(&source, &target,
universe@674:                             (cx_read_func) cxBufferRead,
universe@674:                             (cx_write_func) cxBufferWrite);
universe@674: 
universe@674:     EXPECT_EQ(7, result);
universe@674:     EXPECT_EQ(27, target.size);
universe@674:     EXPECT_STREQ("This is a stream copy test.\0", tbuf);
universe@674: 
universe@674:     cxBufferDestroy(&source);
universe@674:     cxBufferDestroy(&target);
universe@674: }
universe@674: 
universe@633: TEST(Utils, ForN) {
universe@633:     unsigned j;
universe@633:     j = 0;
universe@633:     cx_for_n(i, 50) {
universe@633:         EXPECT_EQ(i, j);
universe@633:         j++;
universe@633:     }
universe@633: }
universe@633: 
universe@646: TEST(Utils, swap_ptr) {
universe@646:     int i = 5;
universe@646:     int j = 8;
universe@646:     int *ip = &i;
universe@646:     int *jp = &j;
universe@646:     cx_swap_ptr(ip, jp);
universe@646:     EXPECT_EQ(ip, &j);
universe@646:     EXPECT_EQ(jp, &i);
universe@646: }
universe@646: 
universe@633: TEST(Utils, szmul) {
universe@633:     size_t r;
universe@633:     int e;
universe@633:     e = cx_szmul(5, 7, &r);
universe@633:     EXPECT_EQ(0, e);
universe@633:     EXPECT_EQ(35, r);
universe@633: 
universe@633:     size_t s = SIZE_MAX & ~3;
universe@633: 
universe@633:     e = cx_szmul(s / 4, 2, &r);
universe@633:     EXPECT_EQ(0, e);
universe@633:     EXPECT_EQ(s / 2, r);
universe@633:     e = cx_szmul(2, s / 4, &r);
universe@633:     EXPECT_EQ(0, e);
universe@633:     EXPECT_EQ(s / 2, r);
universe@633: 
universe@633:     e = cx_szmul(s / 4, 4, &r);
universe@633:     EXPECT_EQ(0, e);
universe@633:     EXPECT_EQ(s, r);
universe@633: 
universe@633:     e = cx_szmul(4, s / 4, &r);
universe@633:     EXPECT_EQ(0, e);
universe@633:     EXPECT_EQ(s, r);
universe@633: 
universe@633:     e = cx_szmul(s / 4, 5, &r);
universe@633:     EXPECT_NE(0, e);
universe@633: 
universe@633:     e = cx_szmul(5, s / 4, &r);
universe@633:     EXPECT_NE(0, e);
universe@633: 
universe@633:     e = cx_szmul(SIZE_MAX - 4, 0, &r);
universe@633:     EXPECT_EQ(0, e);
universe@633:     EXPECT_EQ(0, r);
universe@633: 
universe@633:     e = cx_szmul(0, SIZE_MAX - 1, &r);
universe@633:     EXPECT_EQ(0, e);
universe@633:     EXPECT_EQ(0, r);
universe@633: 
universe@633:     e = cx_szmul(SIZE_MAX, 0, &r);
universe@633:     EXPECT_EQ(0, e);
universe@633:     EXPECT_EQ(0, r);
universe@633: 
universe@633:     e = cx_szmul(0, SIZE_MAX, &r);
universe@633:     EXPECT_EQ(0, e);
universe@633:     EXPECT_EQ(0, r);
universe@633: 
universe@633:     e = cx_szmul(0, 0, &r);
universe@633:     EXPECT_EQ(0, e);
universe@633:     EXPECT_EQ(0, r);
universe@633: }
universe@633: 
universe@633: #ifdef CX_SZMUL_BUILTIN
universe@633: 
universe@633: // also test the custom implementation
universe@633: struct Utils_szmul_impl : ::testing::Test {
universe@633: #undef CX_SZMUL_BUILTIN
universe@633: 
universe@674: #include "../src/szmul.c"
universe@633: 
universe@633: #define CX_SZMUL_BUILTIN
universe@633: };
universe@633: 
universe@633: TEST_F(Utils_szmul_impl, Test) {
universe@633:     size_t r;
universe@633:     int e;
universe@633:     e = cx_szmul_impl(5, 7, &r);
universe@633:     EXPECT_EQ(0, e);
universe@633:     EXPECT_EQ(35, r);
universe@633: 
universe@633:     size_t s = SIZE_MAX & ~3;
universe@633: 
universe@633:     e = cx_szmul_impl(s / 4, 2, &r);
universe@633:     EXPECT_EQ(0, e);
universe@633:     EXPECT_EQ(s / 2, r);
universe@633:     e = cx_szmul_impl(2, s / 4, &r);
universe@633:     EXPECT_EQ(0, e);
universe@633:     EXPECT_EQ(s / 2, r);
universe@633: 
universe@633:     e = cx_szmul_impl(s / 4, 4, &r);
universe@633:     EXPECT_EQ(0, e);
universe@633:     EXPECT_EQ(s, r);
universe@633: 
universe@633:     e = cx_szmul_impl(4, s / 4, &r);
universe@633:     EXPECT_EQ(0, e);
universe@633:     EXPECT_EQ(s, r);
universe@633: 
universe@633:     e = cx_szmul_impl(s / 4, 5, &r);
universe@633:     EXPECT_NE(0, e);
universe@633: 
universe@633:     e = cx_szmul_impl(5, s / 4, &r);
universe@633:     EXPECT_NE(0, e);
universe@633: 
universe@633:     e = cx_szmul_impl(SIZE_MAX - 4, 0, &r);
universe@633:     EXPECT_EQ(0, e);
universe@633:     EXPECT_EQ(0, r);
universe@633: 
universe@633:     e = cx_szmul_impl(0, SIZE_MAX - 1, &r);
universe@633:     EXPECT_EQ(0, e);
universe@633:     EXPECT_EQ(0, r);
universe@633: 
universe@633:     e = cx_szmul_impl(SIZE_MAX, 0, &r);
universe@633:     EXPECT_EQ(0, e);
universe@633:     EXPECT_EQ(0, r);
universe@633: 
universe@633:     e = cx_szmul_impl(0, SIZE_MAX, &r);
universe@633:     EXPECT_EQ(0, e);
universe@633:     EXPECT_EQ(0, r);
universe@633: 
universe@633:     e = cx_szmul_impl(0, 0, &r);
universe@633:     EXPECT_EQ(0, e);
universe@633:     EXPECT_EQ(0, r);
universe@633: }
universe@633: 
universe@633: #endif // CX_SZMUL_BUILTIN