diff options
| -rw-r--r-- | libcxx/test/std/experimental/filesystem/fs.op.funcs/fs.op.last_write_time/last_write_time.pass.cpp | 42 |
1 files changed, 32 insertions, 10 deletions
diff --git a/libcxx/test/std/experimental/filesystem/fs.op.funcs/fs.op.last_write_time/last_write_time.pass.cpp b/libcxx/test/std/experimental/filesystem/fs.op.funcs/fs.op.last_write_time/last_write_time.pass.cpp index cdd177399aa..0ca82b21f56 100644 --- a/libcxx/test/std/experimental/filesystem/fs.op.funcs/fs.op.last_write_time/last_write_time.pass.cpp +++ b/libcxx/test/std/experimental/filesystem/fs.op.funcs/fs.op.last_write_time/last_write_time.pass.cpp @@ -116,12 +116,31 @@ bool TestSupportsMaxTime() { return !ec && new_write_time > max_sec - 1; } +bool TestSupportsMinTime() { + using namespace std::chrono; + using Lim = std::numeric_limits<std::time_t>; + auto min_sec = duration_cast<seconds>(file_time_type::min().time_since_epoch()).count(); + if (min_sec < Lim::min()) return false; + std::error_code ec; + std::time_t old_write_time, new_write_time; + { // WARNING: Do not assert in this scope. + scoped_test_env env; + const path file = env.create_file("file", 42); + old_write_time = LastWriteTime(file); + file_time_type tp = file_time_type::min(); + fs::last_write_time(file, tp, ec); + new_write_time = LastWriteTime(file); + } + return !ec && new_write_time < min_sec + 1; +} + #if defined(__clang__) #pragma clang diagnostic pop #endif static const bool SupportsNegativeTimes = TestSupportsNegativeTimes(); static const bool SupportsMaxTime = TestSupportsMaxTime(); +static const bool SupportsMinTime = TestSupportsMinTime(); } // end namespace @@ -140,6 +159,8 @@ static const bool SupportsMaxTime = TestSupportsMaxTime(); // (B) 'tp' is non-negative or the filesystem supports negative times. // (C) 'tp' is not 'file_time_type::max()' or the filesystem supports the max // value. +// (D) 'tp' is not 'file_time_type::min()' or the filesystem supports the min +// value. inline bool TimeIsRepresentableByFilesystem(file_time_type tp) { using namespace std::chrono; using Lim = std::numeric_limits<std::time_t>; @@ -148,6 +169,7 @@ inline bool TimeIsRepresentableByFilesystem(file_time_type tp) { if (sec < Lim::min() || sec > Lim::max()) return false; else if (microsec < 0 && !SupportsNegativeTimes) return false; else if (tp == file_time_type::max() && !SupportsMaxTime) return false; + else if (tp == file_time_type::min() && !SupportsMinTime) return false; return true; } @@ -355,20 +377,20 @@ TEST_CASE(test_write_min_time) TEST_CHECK(!ec); TEST_CHECK(tt >= new_time); TEST_CHECK(tt < new_time + Sec(1)); - } - ec = GetTestEC(); - last_write_time(p, Clock::now()); + ec = GetTestEC(); + last_write_time(p, Clock::now()); - new_time = file_time_type::min() + MicroSec(1); + new_time = file_time_type::min() + MicroSec(1); - last_write_time(p, new_time, ec); - tt = last_write_time(p); + last_write_time(p, new_time, ec); + tt = last_write_time(p); - if (TimeIsRepresentableByFilesystem(new_time)) { - TEST_CHECK(!ec); - TEST_CHECK(tt >= new_time); - TEST_CHECK(tt < new_time + Sec(1)); + if (TimeIsRepresentableByFilesystem(new_time)) { + TEST_CHECK(!ec); + TEST_CHECK(tt >= new_time); + TEST_CHECK(tt < new_time + Sec(1)); + } } } |
