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/*
* Copyright (c) 2019 The Regents of the University of California
* All rights reserved
*
* The license below extends only to copyright in the software and shall
* not be construed as granting a license to any other intellectual
* property including but not limited to intellectual property relating
* to a hardware implementation of the functionality of the software
* licensed hereunder. You may use the software subject to the license
* terms below provided that you ensure that this notice is replicated
* unmodified and in its entirety in all distributions of the software,
* modified or unmodified, in source code or in binary form.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Authors: Bobby R. Bruce
*/
#include <gtest/gtest.h>
#include <unistd.h>
#include <string>
#include "base/atomicio.hh"
/*
* This will test reading from a file with a buffer capable of storing the
* entirity of the file.
*/
TEST(AtomicioTest, AtomicReadBigBuffer)
{
FILE* file;
file = tmpfile();
std::string file_contents = "This is just some test data to ensure that we"
" can read correctly from a file.";
fputs(file_contents.c_str(), file);
fflush(file);
rewind(file);
char s[1000];
ssize_t size = atomic_read(fileno(file), s, 1000);
fclose(file);
EXPECT_EQ(file_contents.size(), size);
for (unsigned int i = 0; i < size; i++) {
EXPECT_EQ(file_contents[i], s[i]);
}
}
/*
* This will test reading from a file using a buffer smaller than the file
* contents. The buffer should be filled and the remainder left unread.
*/
TEST(AtomicioTest, AtomicReadSmallBuffer)
{
FILE* file;
file = tmpfile();
std::string file_contents = "This is just some test data to ensure that we"
" can read correctly from a file.";
fputs(file_contents.c_str(), file);
fflush(file);
rewind(file);
char s[10];
ssize_t size = atomic_read(fileno(file), s, 10);
fclose(file);
EXPECT_EQ(10, size);
for (unsigned int i = 0; i < size; i++) {
EXPECT_EQ(file_contents[i], s[i]);
}
}
/*
* This tests writing a string to a file via the atomic_write function.
*/
TEST(AtomicioTest, AtomicWrite)
{
FILE* file;
file = tmpfile();
std::string file_contents = "This is just some test data to ensure that we"
" can write correctly to a file.";
ssize_t size = atomic_write(fileno(file),
file_contents.c_str(),
file_contents.size());
fflush(file);
rewind(file);
EXPECT_EQ(file_contents.size(), size);
char c;
for (unsigned int i = 0; (c = fgetc(file)) != EOF; i++) {
EXPECT_EQ(file_contents[i], c);
}
fclose(file);
}
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