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android_external_libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.copy/copy.pass.cpp
Eric Fiselier a0866c5fb5 Implement <filesystem> 
This patch implements the <filesystem> header and uses that
to provide <experimental/filesystem>.

Unlike other standard headers, the symbols needed for <filesystem>
have not yet been placed in libc++.so. Instead they live in the
new libc++fs.a library. Users of filesystem are required to link this
library. (Also note that libc++experimental no longer contains the
definition of <experimental/filesystem>, which now requires linking libc++fs).

The reason for keeping <filesystem> out of the dylib for now is that
it's still somewhat experimental, and the possibility of requiring an
ABI breaking change is very real. In the future the symbols will likely
be moved into the dylib, or the dylib will be made to link libc++fs automagically).

Note that moving the symbols out of libc++experimental may break user builds
until they update to -lc++fs. This should be OK, because the experimental
library provides no stability guarantees. However, I plan on looking into
ways we can force libc++experimental to automagically link libc++fs.

In order to use a single implementation and set of tests for <filesystem>, it
has been placed in a special `__fs` namespace. This namespace is inline in
C++17 onward, but not before that. As such implementation is available
in C++11 onward, but no filesystem namespace is present "directly", and
as such name conflicts shouldn't occur in C++11 or C++14.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@338093 91177308-0d34-0410-b5e6-96231b3b80d8
2018-07-27 03:07:09 +00:00

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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++98, c++03
// <filesystem>
// void copy(const path& from, const path& to);
// void copy(const path& from, const path& to, error_code& ec);
// void copy(const path& from, const path& to, copy_options options);
// void copy(const path& from, const path& to, copy_options options,
// error_code& ec);
#include "filesystem_include.hpp"
#include <type_traits>
#include <cstddef>
#include <cassert>
#include "test_macros.h"
#include "rapid-cxx-test.hpp"
#include "filesystem_test_helper.hpp"
using namespace fs;
using CO = fs::copy_options;
TEST_SUITE(filesystem_copy_test_suite)
TEST_CASE(signature_test)
{
const path p; ((void)p);
std::error_code ec; ((void)ec);
const copy_options opts{}; ((void)opts);
ASSERT_NOT_NOEXCEPT(fs::copy(p, p));
ASSERT_NOT_NOEXCEPT(fs::copy(p, p, ec));
ASSERT_NOT_NOEXCEPT(copy(p, p, opts));
ASSERT_NOT_NOEXCEPT(copy(p, p, opts, ec));
}
// There are 4 cases is the proposal for absolute path.
// Each scope tests one of the cases.
TEST_CASE(test_error_reporting)
{
auto checkThrow = [](path const& f, path const& t, const std::error_code& ec)
{
#ifndef TEST_HAS_NO_EXCEPTIONS
try {
fs::copy(f, t);
return false;
} catch (filesystem_error const& err) {
return err.path1() == f
&& err.path2() == t
&& err.code() == ec;
}
#else
((void)f); ((void)t); ((void)ec);
return true;
#endif
};
scoped_test_env env;
const path file = env.create_file("file1", 42);
const path dir = env.create_dir("dir");
const path fifo = env.create_fifo("fifo");
TEST_REQUIRE(is_other(fifo));
const auto test_ec = GetTestEC();
// !exists(f)
{
std::error_code ec = test_ec;
const path f = StaticEnv::DNE;
const path t = env.test_root;
fs::copy(f, t, ec);
TEST_REQUIRE(ec);
TEST_REQUIRE(ec != test_ec);
TEST_CHECK(checkThrow(f, t, ec));
}
{ // equivalent(f, t) == true
std::error_code ec = test_ec;
fs::copy(file, file, ec);
TEST_REQUIRE(ec);
TEST_REQUIRE(ec != test_ec);
TEST_CHECK(checkThrow(file, file, ec));
}
{ // is_directory(from) && is_file(to)
std::error_code ec = test_ec;
fs::copy(dir, file, ec);
TEST_REQUIRE(ec);
TEST_REQUIRE(ec != test_ec);
TEST_CHECK(checkThrow(dir, file, ec));
}
{ // is_other(from)
std::error_code ec = test_ec;
fs::copy(fifo, dir, ec);
TEST_REQUIRE(ec);
TEST_REQUIRE(ec != test_ec);
TEST_CHECK(checkThrow(fifo, dir, ec));
}
{ // is_other(to)
std::error_code ec = test_ec;
fs::copy(file, fifo, ec);
TEST_REQUIRE(ec);
TEST_REQUIRE(ec != test_ec);
TEST_CHECK(checkThrow(file, fifo, ec));
}
}
TEST_CASE(from_is_symlink)
{
scoped_test_env env;
const path file = env.create_file("file", 42);
const path symlink = env.create_symlink(file, "sym");
const path dne = env.make_env_path("dne");
{ // skip symlinks
std::error_code ec = GetTestEC();
fs::copy(symlink, dne, copy_options::skip_symlinks, ec);
TEST_CHECK(!ec);
TEST_CHECK(!exists(dne));
}
{
const path dest = env.make_env_path("dest");
std::error_code ec = GetTestEC();
fs::copy(symlink, dest, copy_options::copy_symlinks, ec);
TEST_CHECK(!ec);
TEST_CHECK(exists(dest));
TEST_CHECK(is_symlink(dest));
}
{ // copy symlink but target exists
std::error_code ec = GetTestEC();
fs::copy(symlink, file, copy_options::copy_symlinks, ec);
TEST_CHECK(ec);
TEST_CHECK(ec != GetTestEC());
}
{ // create symlinks but target exists
std::error_code ec = GetTestEC();
fs::copy(symlink, file, copy_options::create_symlinks, ec);
TEST_CHECK(ec);
TEST_CHECK(ec != GetTestEC());
}
}
TEST_CASE(from_is_regular_file)
{
scoped_test_env env;
const path file = env.create_file("file", 42);
const path dir = env.create_dir("dir");
{ // skip copy because of directory
const path dest = env.make_env_path("dest1");
std::error_code ec = GetTestEC();
fs::copy(file, dest, CO::directories_only, ec);
TEST_CHECK(!ec);
TEST_CHECK(!exists(dest));
}
{ // create symlink to file
const path dest = env.make_env_path("sym");
std::error_code ec = GetTestEC();
fs::copy(file, dest, CO::create_symlinks, ec);
TEST_CHECK(!ec);
TEST_CHECK(is_symlink(dest));
TEST_CHECK(equivalent(file, canonical(dest)));
}
{ // create hard link to file
const path dest = env.make_env_path("hardlink");
TEST_CHECK(hard_link_count(file) == 1);
std::error_code ec = GetTestEC();
fs::copy(file, dest, CO::create_hard_links, ec);
TEST_CHECK(!ec);
TEST_CHECK(exists(dest));
TEST_CHECK(hard_link_count(file) == 2);
}
{ // is_directory(t)
const path dest_dir = env.create_dir("dest_dir");
const path expect_dest = dest_dir / file.filename();
std::error_code ec = GetTestEC();
fs::copy(file, dest_dir, ec);
TEST_CHECK(!ec);
TEST_CHECK(is_regular_file(expect_dest));
}
{ // otherwise copy_file(from, to, ...)
const path dest = env.make_env_path("file_copy");
std::error_code ec = GetTestEC();
fs::copy(file, dest, ec);
TEST_CHECK(!ec);
TEST_CHECK(is_regular_file(dest));
}
}
TEST_CASE(from_is_directory)
{
struct FileInfo {
path filename;
std::size_t size;
};
const FileInfo files[] = {
{"file1", 0},
{"file2", 42},
{"file3", 300}
};
scoped_test_env env;
const path dir = env.create_dir("dir");
const path nested_dir_name = "dir2";
const path nested_dir = env.create_dir("dir/dir2");
for (auto& FI : files) {
env.create_file(dir / FI.filename, FI.size);
env.create_file(nested_dir / FI.filename, FI.size);
}
{ // test for non-existent directory
const path dest = env.make_env_path("dest_dir1");
std::error_code ec = GetTestEC();
fs::copy(dir, dest, ec);
TEST_REQUIRE(!ec);
TEST_CHECK(is_directory(dest));
for (auto& FI : files) {
path created = dest / FI.filename;
TEST_CHECK(is_regular_file(created));
TEST_CHECK(file_size(created) == FI.size);
}
TEST_CHECK(!is_directory(dest / nested_dir_name));
}
{ // test for existing directory
const path dest = env.create_dir("dest_dir2");
std::error_code ec = GetTestEC();
fs::copy(dir, dest, ec);
TEST_REQUIRE(!ec);
TEST_CHECK(is_directory(dest));
for (auto& FI : files) {
path created = dest / FI.filename;
TEST_CHECK(is_regular_file(created));
TEST_CHECK(file_size(created) == FI.size);
}
TEST_CHECK(!is_directory(dest / nested_dir_name));
}
{ // test recursive copy
const path dest = env.make_env_path("dest_dir3");
std::error_code ec = GetTestEC();
fs::copy(dir, dest, CO::recursive, ec);
TEST_REQUIRE(!ec);
TEST_CHECK(is_directory(dest));
const path nested_dest = dest / nested_dir_name;
TEST_REQUIRE(is_directory(nested_dest));
for (auto& FI : files) {
path created = dest / FI.filename;
path nested_created = nested_dest / FI.filename;
TEST_CHECK(is_regular_file(created));
TEST_CHECK(file_size(created) == FI.size);
TEST_CHECK(is_regular_file(nested_created));
TEST_CHECK(file_size(nested_created) == FI.size);
}
}
}
TEST_CASE(test_copy_symlinks_to_symlink_dir)
{
scoped_test_env env;
const path file1 = env.create_file("file1", 42);
const path file2 = env.create_file("file2", 101);
const path file2_sym = env.create_symlink(file2, "file2_sym");
const path dir = env.create_dir("dir");
const path dir_sym = env.create_symlink(dir, "dir_sym");
{
std::error_code ec = GetTestEC();
fs::copy(file1, dir_sym, copy_options::copy_symlinks, ec);
TEST_CHECK(!ec);
const path dest = env.make_env_path("dir/file1");
TEST_CHECK(exists(dest));
TEST_CHECK(!is_symlink(dest));
TEST_CHECK(file_size(dest) == 42);
}
}
TEST_CASE(test_dir_create_symlink)
{
scoped_test_env env;
const path dir = env.create_dir("dir1");
const path dest = env.make_env_path("dne");
{
std::error_code ec = GetTestEC();
fs::copy(dir, dest, copy_options::create_symlinks, ec);
TEST_CHECK(ec == std::make_error_code(std::errc::is_a_directory));
TEST_CHECK(!exists(dest));
TEST_CHECK(!is_symlink(dest));
}
{
std::error_code ec = GetTestEC();
fs::copy(dir, dest, copy_options::create_symlinks|copy_options::recursive, ec);
TEST_CHECK(ec == std::make_error_code(std::errc::is_a_directory));
TEST_CHECK(!exists(dest));
TEST_CHECK(!is_symlink(dest));
}
}
TEST_CASE(test_otherwise_no_effects_clause)
{
scoped_test_env env;
const path dir = env.create_dir("dir1");
{ // skip copy because of directory
const path dest = env.make_env_path("dest1");
std::error_code ec;
fs::copy(dir, dest, CO::directories_only, ec);
TEST_CHECK(!ec);
TEST_CHECK(!exists(dest));
}
}
TEST_SUITE_END()
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