transmission/tests/libtransmission/copy-test.cc

137 lines
3.8 KiB
C++

/*
* This file copyright Transmission authors and contributors
*
* It may be used under the GNU GPL versions 2 or 3
* or any future license endorsed by Mnemosyne LLC.
*
*/
#include <algorithm>
#include "transmission.h"
#include "error.h"
#include "file.h"
#include "test-fixtures.h"
namespace libtransmission
{
namespace test
{
class CopyTest : public SandboxedTest
{
protected:
void testImpl(char const* filename1, char const* filename2, size_t const file_length)
{
auto const path1 = tr_buildPath(sandboxDir().data(), filename1, nullptr);
/* Create a file. */
char* file_content = static_cast<char*>(tr_malloc(file_length));
tr_rand_buffer(file_content, file_length);
createFileWithContents(path1, file_content, file_length);
tr_free(file_content);
auto const path2 = tr_buildPath(sandboxDir().data(), filename2, nullptr);
tr_error* err = nullptr;
/* Copy it. */
EXPECT_TRUE(tr_sys_path_copy(path1, path2, &err));
EXPECT_EQ(nullptr, err);
tr_error_clear(&err);
EXPECT_TRUE(filesAreIdentical(path1, path2));
/* Dispose of those files that we created. */
tr_sys_path_remove(path1, nullptr);
tr_free(path1);
tr_sys_path_remove(path2, nullptr);
tr_free(path2);
}
private:
uint64_t fillBufferFromFd(tr_sys_file_t fd, uint64_t bytes_remaining, char* buf, size_t buf_len)
{
memset(buf, 0, buf_len);
size_t buf_pos = 0;
while (buf_pos < buf_len && bytes_remaining > 0)
{
uint64_t const chunk_size = std::min(uint64_t{ buf_len - buf_pos }, bytes_remaining);
uint64_t bytes_read = 0;
tr_sys_file_read(fd, buf + buf_pos, chunk_size, &bytes_read, nullptr);
EXPECT_LE(buf_pos + bytes_read, buf_len);
EXPECT_LE(bytes_read, bytes_remaining);
buf_pos += bytes_read;
bytes_remaining -= bytes_read;
}
return bytes_remaining;
}
bool filesAreIdentical(char const* fn1, char const* fn2)
{
bool identical = true;
tr_sys_file_t fd1 = tr_sys_file_open(fn1, TR_SYS_FILE_READ | TR_SYS_FILE_SEQUENTIAL, 0, nullptr);
tr_sys_file_t fd2 = tr_sys_file_open(fn2, TR_SYS_FILE_READ | TR_SYS_FILE_SEQUENTIAL, 0, nullptr);
EXPECT_NE(fd1, TR_BAD_SYS_FILE);
EXPECT_NE(fd2, TR_BAD_SYS_FILE);
tr_sys_path_info info1;
tr_sys_path_info info2;
tr_sys_file_get_info(fd1, &info1, nullptr);
tr_sys_file_get_info(fd2, &info2, nullptr);
EXPECT_EQ(info1.size, info2.size);
uint64_t bytes_left1 = info1.size;
uint64_t bytes_left2 = info2.size;
size_t const buflen = 2 * 1024 * 1024; /* 2 MiB buffer */
char* readbuf1 = static_cast<char*>(tr_malloc(buflen));
char* readbuf2 = static_cast<char*>(tr_malloc(buflen));
while (bytes_left1 > 0 || bytes_left2 > 0)
{
bytes_left1 = fillBufferFromFd(fd1, bytes_left1, readbuf1, buflen);
bytes_left2 = fillBufferFromFd(fd2, bytes_left2, readbuf2, buflen);
if (bytes_left1 != bytes_left2)
{
identical = false;
break;
}
if (memcmp(readbuf1, readbuf2, buflen) != 0)
{
identical = false;
break;
}
}
tr_free(readbuf1);
tr_free(readbuf2);
tr_sys_file_close(fd1, nullptr);
tr_sys_file_close(fd2, nullptr);
return identical;
}
};
TEST_F(CopyTest, copy)
{
char const* filename1 = "orig-blob.txt";
char const* filename2 = "copy-blob.txt";
auto const random_file_length = 1024 * 1024 * 10;
testImpl(filename1, filename2, random_file_length);
}
} // namespace test
} // namespace libtransmission