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/**
* @file llfile_tut.cpp
* @author Frederick Martian
* @date 2025-11
* @brief LLFile test cases.
*
* $LicenseInfo:firstyear=2025&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Research, Inc.
*
* 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;
* version 2.1 of the License only.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#include <tut/tut.hpp>
#include "lltut.h"
#include "linden_common.h"
#include "llfile.h"
namespace tut
{
static void clear_entire_dir(std::filesystem::path &dir)
{
std::error_code ec;
std::filesystem::remove_all(dir, ec);
}
static std::filesystem::path append_filename(const std::filesystem::path& dir, const std::string& element)
{
std::filesystem::path path = dir;
return path.append(element);
}
static std::filesystem::path get_testdir(const std::filesystem::path& tempdir)
{
return append_filename(tempdir, std::string("test_dir"));
}
struct llfile_test
{
std::filesystem::path tempdir = LLFile::tmpdir();
std::filesystem::path testdir = get_testdir(tempdir);
};
typedef test_group<llfile_test> llfile_test_t;
typedef llfile_test_t::object llfile_test_object_t;
tut::llfile_test_t tut_llfile_test("llfile_test");
template<> template<>
void llfile_test_object_t::test<1>()
{
// Test creating directories and files and deleting them and checking if the
// relevant status functions work as expected
ensure("LLFile::tmpdir() empty", !tempdir.empty());
ensure("LLFile::tmpdir() doesn't exist", LLFile::exists(tempdir.string()));
ensure("LLFile::tmpdir() is not a directory", LLFile::isdir(tempdir.string()));
ensure("LLFile::tmpdir() should not be a file", !LLFile::isfile(tempdir.string()));
// Make sure there is nothing left from a previous test run
clear_entire_dir(testdir);
ensure("llfile_test should not exist anymore", !LLFile::exists(testdir.string()));
int rc = LLFile::mkdir(testdir.string());
ensure("LLFile::mkdir() failed", rc == 0);
ensure("llfile_test should be a directory", LLFile::isdir(testdir.string()));
rc = LLFile::mkdir(testdir.string());
ensure("LLFile::mkdir() should not fail when the directory already exists", rc == 0);
std::filesystem::path testfile1 = testdir;
testfile1.append("llfile_test.dat");
ensure("llfile_test1.dat should not yet exist", !LLFile::exists(testfile1.string()));
const char* testdata = "testdata";
S64 bytes = LLFile::write(testfile1.string(), testdata, 0, sizeof(testdata));
ensure("LLFile::write() did not write correctly", bytes == sizeof(testdata));
rc = LLFile::remove(testfile1.string());
ensure("LLFile::remove() for file test_file.dat", rc == 0);
ensure("llfile_test.dat should not exist anymore", !LLFile::exists(testfile1.string()));
ensure("llfile_test.dat should not be a file", !LLFile::isfile(testfile1.string()));
ensure("llfile_test.dat should not be a directory", !LLFile::isdir(testfile1.string()));
ensure("llfile_test.dat should not be a symlink", !LLFile::islink(testfile1.string()));
rc = LLFile::remove(testdir.string());
ensure("LLFile::remove() for directory llfile_test failed", rc == 0);
ensure("llfile_test should not exist anymore", !LLFile::exists(testdir.string()));
}
template<> template<>
void llfile_test_object_t::test<2>()
{
// High level static file IO functions to read and write data files
LLFile::mkdir(testdir.string());
ensure("llfile_test should exist", LLFile::isdir(testdir.string()));
std::filesystem::path testfile1 = testdir;
testfile1.append("llfile_test.dat");
std::string testdata1("testdata");
std::string testdata2("datateststuff");
std::time_t current = time(nullptr);
S64 bytes = LLFile::write(testfile1.string(), testdata1.c_str(), 0, testdata1.length());
ensure("LLFile::write() did not write correctly", bytes == testdata1.length());
ensure("llfile_test.dat should exist", LLFile::exists(testfile1.string()));
ensure("llfile_test.dat should be a file", LLFile::isfile(testfile1.string()));
ensure("llfile_test.dat should not be a directory", !LLFile::isdir(testfile1.string()));
bytes = LLFile::size(testfile1.string());
ensure("LLFile::size() did not return the correct size", bytes == testdata1.length());
std::string data = LLFile::getContents(testfile1.string());
ensure("LLFile::getContents() did not return the correct size data", data.length() == testdata1.length());
ensure_memory_matches("LLFile::getContents() did not read correct data", testdata1.c_str(), (U32)testdata1.length(), data.c_str(), (U32)data.length());
std::time_t ctime = LLFile::getCreationTime(testfile1.string());
ensure_approximately_equals_range("LLFile::getCreationTime() did not return correct time", (F32)(ctime - current), 0.f, 1);
std::time_t mtime = LLFile::getModificationTime(testfile1.string());
ensure_approximately_equals_range("LLFile::getModificationTime() did not return correct time", (F32)(mtime - current), 0.f, 1);
char buffer[1024];
bytes = LLFile::read(testfile1.string(), buffer, 0, testdata1.length());
ensure("LLFile:read() did not return the correct size", bytes == testdata1.length());
ensure_memory_matches("LLFile::read() did not read correct data", testdata1.c_str(), (U32)bytes, buffer, (U32)bytes);
// What if we try to read more data than there is in the file?
bytes = LLFile::read(testfile1.string(), buffer, 0, bytes + 10);
ensure("LLFile:read() did not correctly stop on eof", bytes == testdata1.length());
ensure_memory_matches("LLFile::read() did not read correct data", testdata1.c_str(), (U32)bytes, buffer, (U32)bytes);
// Let's append more data
bytes = LLFile::write(testfile1.string(), testdata2.c_str(), -1, testdata2.length());
ensure("LLFile::write() did not write correctly", bytes == testdata2.length());
bytes = LLFile::size(testfile1.string());
ensure("LLFile::size() did not return the correct size", bytes == testdata1.length() + testdata2.length());
bytes = LLFile::read(testfile1.string(), buffer, 0, bytes);
ensure("LLFile:read() did not read correct number of bytes", bytes == testdata1.length() + testdata2.length());
ensure_memory_matches("LLFile:read() did not read correct testdata1", testdata1.c_str(), (U32)testdata1.length(), buffer, (U32)testdata1.length());
ensure_memory_matches("LLFile:read() did not read correct testdata2", testdata2.c_str(), (U32)testdata2.length(), buffer + testdata1.length(), (U32)testdata2.length());
}
template<> template<>
void llfile_test_object_t::test<3>()
{
const size_t numints = 1024;
// Testing the LLFile class implementation
std::filesystem::path testfile = testdir;
testfile.append("llfile_test.bin");
int data[numints];
for (int &t : data)
{
t = rand();
}
std::error_code ec;
LLFile fileout(testfile.string(), LLFile::out, ec);
ensure("LLFile constructor did not open correctly", (bool)fileout);
ensure("error_code from LLFile constructor should not indicate an error", !ec);
if (fileout)
{
S64 length = fileout.size(ec);
ensure("freshly created file should be empty", length == 0);
ensure("error_code from LLFile::size() should not indicate an error", !ec);
S64 bytes = fileout.write(data, sizeof(data), ec);
ensure("LLFile::write() did not write correctly", bytes == sizeof(data));
ensure("error_code from LLFile::write() should not indicate an error", !ec);
bytes = fileout.write(data, sizeof(data), ec);
ensure("LLFile::write() did not write correctly", bytes == sizeof(data));
ensure("error_code from LLFile::write() should not indicate an error", !ec);
bytes = fileout.size(ec);
ensure("LLFile::size() returned wrong size", bytes == 2 * sizeof(data));
ensure("error_code from LLFile::size() should not indicate an error", !ec);
fileout.close();
}
LLFile filein(testfile.string(), LLFile::in, ec);
ensure("LLFile constructor did not open correctly", (bool)filein);
ensure("error_code from LLFile constructor should not indicate an error", !ec);
if (filein)
{
S64 length = filein.size(ec);
ensure("LLFile::size() returned wrong size", length == 2 * sizeof(data));
ensure("error_code from LLFile::size() should not indicate an error", !ec);
char* buffer = (char*)malloc(length);
S64 bytes = filein.read(buffer, length, ec);
ensure("LLFile::read() did not read correctly", bytes == length);
ensure("error_code from LLFile::read() should not indicate an error", !ec);
ensure_memory_matches("LLFile:read() did not read correct data1", data, (U32)sizeof(data), buffer, (U32)sizeof(data));
ensure_memory_matches("LLFile:read() did not read correct data2", data, (U32)sizeof(data), buffer + sizeof(data), (U32)sizeof(data));
S64 offset = filein.tell(ec);
ensure("LLFile::tell() returned a bad offset", offset == length);
ensure("error_code from LLFile::read() should not indicate an error", !ec);
offset = sizeof(data) / 2;
int rc = filein.seek(offset, ec);
ensure("LLFile::seek() indicated an error", rc == 0);
ensure("error_code from LLFile::seek() should not indicate an error", !ec);
bytes = filein.read(buffer, 2 * sizeof(data), ec);
ensure("LLFile::read() did not read correctly", bytes == sizeof(data) + offset);
ensure("error_code from LLFile::read() should not indicate an error", !ec);
ensure_memory_matches("LLFile:read() did not read correct data3", (char*)data + offset, (U32)offset, buffer, (U32)offset);
ensure_memory_matches("LLFile:read() did not read correct data4", (char*)data, (U32)sizeof(data), buffer + offset, (U32)sizeof(data));
filein.close();
free(buffer);
}
}
template<> template<>
void llfile_test_object_t::test<4>()
{
// Testing the LLFile class implementation with wrong paths and parameters
std::filesystem::path testfile = testdir;
testfile.append("llfile_test.bin");
std::error_code ec;
LLFile file(testfile.string(), LLFile::out | LLFile::noreplace, ec);
ensure("LLFile constructor should not have opened the already existing file", !file);
ensure("error_code from LLFile constructor should indicate an error", (bool)ec);
LLFile::remove(testfile.string());
file = LLFile(testfile.string(), LLFile::out | LLFile::app | LLFile::trunc, ec);
ensure("LLFile constructor should not have opened the file with conflicting flags", !file);
ensure("error_code from LLFile constructor should indicate an error", (bool)ec);
file = LLFile(testfile.string(), LLFile::out | LLFile::app | LLFile::noreplace, ec);
ensure("LLFile constructor should not have opened the file with conflicting flags", !file);
ensure("error_code from LLFile constructor should indicate an error", (bool)ec);
testfile = testdir;
testfile.append("llfile_test");
testfile.append("llfile_test.bin");
file = LLFile(testfile.string(), LLFile::in, ec);
ensure("LLFile constructor should not have been able to open the file in the non-existing directory", !file);
ensure("error_code from LLFile constructor should indicate an error", (bool)ec);
}
} // namespace tut
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