a0866c5fb5
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
113 lines
3.2 KiB
C++
113 lines
3.2 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: c++98, c++03
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// <filesystem>
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// bool equivalent(path const& lhs, path const& rhs);
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// bool equivalent(path const& lhs, path const& rhs, std::error_code& ec) noexcept;
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#include "filesystem_include.hpp"
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#include <type_traits>
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#include <cassert>
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#include "test_macros.h"
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#include "rapid-cxx-test.hpp"
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#include "filesystem_test_helper.hpp"
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using namespace fs;
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TEST_SUITE(equivalent_test_suite)
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TEST_CASE(signature_test) {
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const path p;
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((void)p);
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std::error_code ec;
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((void)ec);
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ASSERT_NOEXCEPT(equivalent(p, p, ec));
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ASSERT_NOT_NOEXCEPT(equivalent(p, p));
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}
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TEST_CASE(equivalent_test) {
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struct TestCase {
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path lhs;
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path rhs;
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bool expect;
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};
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const TestCase testCases[] = {
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{StaticEnv::Dir, StaticEnv::Dir, true},
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{StaticEnv::File, StaticEnv::Dir, false},
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{StaticEnv::Dir, StaticEnv::SymlinkToDir, true},
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{StaticEnv::Dir, StaticEnv::SymlinkToFile, false},
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{StaticEnv::File, StaticEnv::File, true},
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{StaticEnv::File, StaticEnv::SymlinkToFile, true},
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};
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for (auto& TC : testCases) {
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std::error_code ec;
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TEST_CHECK(equivalent(TC.lhs, TC.rhs, ec) == TC.expect);
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TEST_CHECK(!ec);
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}
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}
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TEST_CASE(equivalent_reports_error_if_input_dne) {
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const path E = StaticEnv::File;
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const path DNE = StaticEnv::DNE;
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{ // Test that an error is reported when either of the paths don't exist
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std::error_code ec = GetTestEC();
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TEST_CHECK(equivalent(E, DNE, ec) == false);
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TEST_CHECK(ec);
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TEST_CHECK(ec != GetTestEC());
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}
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{
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std::error_code ec = GetTestEC();
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TEST_CHECK(equivalent(DNE, E, ec) == false);
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TEST_CHECK(ec);
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TEST_CHECK(ec != GetTestEC());
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}
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{
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TEST_CHECK_THROW(filesystem_error, equivalent(DNE, E));
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TEST_CHECK_THROW(filesystem_error, equivalent(E, DNE));
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}
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{ // Test that an exception is thrown if both paths do not exist.
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TEST_CHECK_THROW(filesystem_error, equivalent(DNE, DNE));
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}
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{
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std::error_code ec = GetTestEC();
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TEST_CHECK(equivalent(DNE, DNE, ec) == false);
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TEST_CHECK(ec);
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TEST_CHECK(ec != GetTestEC());
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}
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}
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TEST_CASE(equivalent_hardlink_succeeds) {
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scoped_test_env env;
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path const file = env.create_file("file", 42);
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const path hl1 = env.create_hardlink(file, "hl1");
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const path hl2 = env.create_hardlink(file, "hl2");
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TEST_CHECK(equivalent(file, hl1));
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TEST_CHECK(equivalent(file, hl2));
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TEST_CHECK(equivalent(hl1, hl2));
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}
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TEST_CASE(equivalent_is_other_succeeds) {
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scoped_test_env env;
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path const file = env.create_file("file", 42);
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const path fifo1 = env.create_fifo("fifo1");
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const path fifo2 = env.create_fifo("fifo2");
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// Required to test behavior for inputs where is_other(p) is true.
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TEST_REQUIRE(is_other(fifo1));
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TEST_CHECK(!equivalent(file, fifo1));
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TEST_CHECK(!equivalent(fifo2, file));
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TEST_CHECK(!equivalent(fifo1, fifo2));
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TEST_CHECK(equivalent(fifo1, fifo1));
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}
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TEST_SUITE_END()
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