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// Copyright (c) 2015 Artyom Beilis (Tonkikh)
// Copyright (c) 2019-2021 Alexander Grund
//
// Distributed under the Boost Software License, Version 1.0.
// https://www.boost.org/LICENSE_1_0.txt
#include <boost/nowide/fstream.hpp>
#include <boost/nowide/cstdio.hpp>
#include "file_test_helpers.hpp"
#include "test.hpp"
#include <string>
namespace nw = boost::nowide;
using namespace boost::nowide::test;
template<typename T>
void test_ctor(const T& filename)
{
// Create file if not exist
ensure_not_exists(filename);
{
nw::ofstream f(filename);
TEST(f);
}
TEST(file_exists(filename));
TEST_EQ(read_file(filename), "");
// Clear file if exists
create_file(filename, "test");
// Default
{
nw::ofstream f(filename);
TEST(f);
}
TEST_EQ(read_file(filename), "");
// At end
{
nw::ofstream f(filename, std::ios::ate);
TEST(f);
}
TEST_EQ(read_file(filename), "");
// Binary mode
{
nw::ofstream f(filename, std::ios::binary);
TEST(f);
TEST(f << "test\r\n");
}
TEST_EQ(read_file(filename, data_type::binary), "test\r\n");
}
template<typename T>
void test_open(const T& filename)
{
// Create file if not exist
ensure_not_exists(filename);
{
nw::ofstream f;
f.open(filename);
TEST(f);
}
TEST(file_exists(filename));
TEST_EQ(read_file(filename), "");
// Clear file if exists
create_file(filename, "test");
// Default
{
nw::ofstream f;
f.open(filename);
TEST(f);
}
TEST_EQ(read_file(filename), "");
// At end
{
nw::ofstream f;
f.open(filename, std::ios::ate);
TEST(f);
}
TEST_EQ(read_file(filename), "");
// Binary mode
{
nw::ofstream f;
f.open(filename, std::ios::binary);
TEST(f);
TEST(f << "test\r\n");
}
TEST_EQ(read_file(filename, data_type::binary), "test\r\n");
}
void test_move_and_swap(const std::string& filename)
{
const std::string filename2 = filename + ".2";
remove_file_at_exit _(filename);
remove_file_at_exit _2(filename2);
// Move construct
{
nw::ofstream f_old(filename);
TEST(f_old << "Hello ");
nw::ofstream f_new(std::move(f_old));
// old is closed
TEST(!f_old.is_open());
// It is unclear if the std streams can be reused after move-from
#if BOOST_NOWIDE_USE_FILEBUF_REPLACEMENT
f_old.open(filename2);
#else
f_old = nw::ofstream(filename2);
#endif
TEST(f_old << "Foo");
// new starts where the old was left of
TEST(f_new);
TEST(f_new << "World");
}
TEST_EQ(read_file(filename), "Hello World");
TEST_EQ(read_file(filename2), "Foo");
// Move assign
{
nw::ofstream f_new(filename2);
TEST(f_new << "DiscardThis");
{
nw::ofstream f_old(filename);
TEST(f_old << "Hello ");
f_new = std::move(f_old);
// old is closed
TEST(!f_old.is_open());
// It is unclear if the std streams can be reused after move-from
#if BOOST_NOWIDE_USE_FILEBUF_REPLACEMENT
f_old.open(filename2);
#else
f_old = nw::ofstream(filename2);
#endif
TEST(f_old << "Foo");
}
// new starts where the old was left of
TEST(f_new);
TEST(f_new << "World");
}
TEST_EQ(read_file(filename), "Hello World");
TEST_EQ(read_file(filename2), "Foo");
// Swap
{
nw::ofstream f_old(filename);
TEST(f_old << "Hello ");
nw::ofstream f_new(filename2);
TEST(f_new << "Foo ");
// After swapping both are valid and where they left
f_new.swap(f_old);
TEST(f_old << "Bar");
TEST(f_new << "World");
f_new.close();
swap(f_new, f_old);
TEST(!f_old.is_open());
TEST(f_new.is_open());
}
TEST_EQ(read_file(filename), "Hello World");
TEST_EQ(read_file(filename2), "Foo Bar");
}
// Based on bug reported in #150
void test_reopen(const std::string& filename)
{
const std::string filename2 = filename + ".2";
const std::string filename3 = filename + ".3";
remove_file_at_exit _(filename);
remove_file_at_exit _2(filename2);
remove_file_at_exit _3(filename3);
nw::ofstream f(filename, std::ios_base::binary);
using nw::test::data_type;
// Data sizes were randomly selected but above the usual default buffer size of 512
const std::string testData = nw::test::create_random_data(613, data_type::binary);
TEST(f.write(testData.c_str(), testData.size()));
f.close();
TEST_EQ(read_file(filename, data_type::binary), testData);
// Reopen via open-function
f.open(filename2, std::ios_base::binary);
const std::string testData2 = nw::test::create_random_data(523, data_type::binary);
TEST(f.write(testData2.c_str(), testData2.size()));
f.close();
TEST_EQ(read_file(filename2, data_type::binary), testData2);
// Reopen via move-assign
f = nw::ofstream(filename3, std::ios_base::binary);
const std::string testData3 = nw::test::create_random_data(795, data_type::binary);
TEST(f.write(testData3.c_str(), testData3.size()));
f.close();
TEST_EQ(read_file(filename3, data_type::binary), testData3);
}
// coverity[root_function]
void test_main(int, char** argv, char**)
{
const std::string exampleFilename = std::string(argv[0]) + "-\xd7\xa9-\xd0\xbc-\xce\xbd.txt";
test_ctor(exampleFilename.c_str());
test_ctor(exampleFilename);
test_open(exampleFilename.c_str());
test_open(exampleFilename);
test_move_and_swap(exampleFilename);
test_reopen(exampleFilename);
}
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