f1471a367b
As I move towards implementing std::filesystem, there is a need to make the existing tests run against both the std and experimental versions. Additionally, it's helpful to allow running the tests against other implementations of filesystem. This patch converts the test to easily target either. First, it adds a filesystem_include.hpp header which is soley responsible for selecting and including the correct implementation. Second, it converts existing tests to use this header instead of including filesystem directly. git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@328475 91177308-0d34-0410-b5e6-96231b3b80d8
129 lines
3.9 KiB
C++
129 lines
3.9 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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// <experimental/filesystem>
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// space_info space(const path& p);
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// space_info space(const path& p, error_code& ec) noexcept;
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#include "filesystem_include.hpp"
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#include <sys/statvfs.h>
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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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bool EqualDelta(std::uintmax_t x, std::uintmax_t y, std::uintmax_t delta) {
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if (x >= y) {
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return (x - y) <= delta;
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} else {
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return (y - x) <= delta;
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}
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}
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TEST_SUITE(filesystem_space_test_suite)
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TEST_CASE(signature_test)
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{
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const path p; ((void)p);
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std::error_code ec; ((void)ec);
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ASSERT_SAME_TYPE(decltype(space(p)), space_info);
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ASSERT_SAME_TYPE(decltype(space(p, ec)), space_info);
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ASSERT_NOT_NOEXCEPT(space(p));
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ASSERT_NOEXCEPT(space(p, ec));
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}
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TEST_CASE(test_error_reporting)
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{
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auto checkThrow = [](path const& f, const std::error_code& ec)
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{
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#ifndef TEST_HAS_NO_EXCEPTIONS
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try {
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space(f);
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return false;
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} catch (filesystem_error const& err) {
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return err.path1() == f
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&& err.path2() == ""
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&& err.code() == ec;
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}
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#else
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((void)f); ((void)ec);
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return true;
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#endif
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};
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const path cases[] = {
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"",
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StaticEnv::DNE,
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StaticEnv::BadSymlink
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};
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for (auto& p : cases) {
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const auto expect = static_cast<std::uintmax_t>(-1);
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std::error_code ec;
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space_info info = space(p, ec);
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TEST_CHECK(ec);
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TEST_CHECK(info.capacity == expect);
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TEST_CHECK(info.free == expect);
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TEST_CHECK(info.available == expect);
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TEST_CHECK(checkThrow(p, ec));
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}
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}
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TEST_CASE(basic_space_test)
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{
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// All the test cases should reside on the same filesystem and therefore
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// should have the same expected result. Compute this expected result
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// one and check that it looks semi-sane.
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struct statvfs expect;
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TEST_REQUIRE(::statvfs(StaticEnv::Dir.c_str(), &expect) != -1);
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TEST_CHECK(expect.f_bavail > 0);
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TEST_CHECK(expect.f_bfree > 0);
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TEST_CHECK(expect.f_bsize > 0);
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TEST_CHECK(expect.f_blocks > 0);
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TEST_REQUIRE(expect.f_frsize > 0);
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auto do_mult = [&](std::uintmax_t val) {
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std::uintmax_t fsize = expect.f_frsize;
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std::uintmax_t new_val = val * fsize;
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TEST_CHECK(new_val / fsize == val); // Test for overflow
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return new_val;
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};
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const std::uintmax_t bad_value = static_cast<std::uintmax_t>(-1);
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const std::uintmax_t expect_capacity = do_mult(expect.f_blocks);
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const std::uintmax_t expect_free = do_mult(expect.f_bfree);
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const std::uintmax_t expect_avail = do_mult(expect.f_bavail);
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// Other processes running on the operating system may have changed
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// the amount of space available. Check that these are within tolerances.
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// Currently 5% of capacity
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const std::uintmax_t delta = expect_capacity / 20;
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const path cases[] = {
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StaticEnv::File,
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StaticEnv::Dir,
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StaticEnv::Dir2,
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StaticEnv::SymlinkToFile,
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StaticEnv::SymlinkToDir
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};
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for (auto& p : cases) {
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std::error_code ec = GetTestEC();
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space_info info = space(p, ec);
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TEST_CHECK(!ec);
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TEST_CHECK(info.capacity != bad_value);
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TEST_CHECK(expect_capacity == info.capacity);
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TEST_CHECK(info.free != bad_value);
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TEST_CHECK(EqualDelta(expect_free, info.free, delta));
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TEST_CHECK(info.available != bad_value);
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TEST_CHECK(EqualDelta(expect_avail, info.available, delta));
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}
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}
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TEST_SUITE_END()
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