1 files changed, 136 insertions, 0 deletions
diff --git a/libcxx/test/std/time/time.zone/time.zone.zonedtime/time.zone.zonedtime.members/assign.sys_time.pass.cpp b/libcxx/test/std/time/time.zone/time.zone.zonedtime/time.zone.zonedtime.members/assign.sys_time.pass.cpp
new file mode 100644
index 0000000..0eeba7a
--- /dev/null
+++ b/libcxx/test/std/time/time.zone/time.zone.zonedtime/time.zone.zonedtime.members/assign.sys_time.pass.cpp
@@ -0,0 +1,136 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-filesystem, no-localization, no-tzdb
+
+// XFAIL: libcpp-has-no-experimental-tzdb
+// XFAIL: availability-tzdb-missing
+
+// <chrono>
+
+// template<class Duration, class TimeZonePtr = const time_zone*>
+// class zoned_time;
+//
+// zoned_time& operator=(const sys_time<Duration>& st);
+
+#include <cassert>
+#include <chrono>
+#include <concepts>
+#include <type_traits>
+
+namespace cr = std::chrono;
+
+int main(int, char**) {
+  {
+    using duration   = cr::nanoseconds;
+    using time_point = cr::sys_time<duration>;
+    using zoned_time = cr::zoned_time<duration>;
+    zoned_time zt{time_point{duration{42}}};
+
+    assert(zt.get_time_zone() == cr::locate_zone("UTC"));
+    assert(zt.get_sys_time() == time_point{duration{42}});
+
+    [[maybe_unused]] std::same_as<zoned_time&> decltype(auto) _ = zt = time_point{duration{99}};
+    assert(zt.get_time_zone() == cr::locate_zone("UTC"));
+    assert(zt.get_sys_time() == time_point{duration{99}});
+  }
+  {
+    using duration   = cr::microseconds;
+    using time_point = cr::sys_time<duration>;
+    using zoned_time = cr::zoned_time<duration>;
+    zoned_time zt{time_point{duration{42}}};
+
+    assert(zt.get_time_zone() == cr::locate_zone("UTC"));
+    assert(zt.get_sys_time() == time_point{duration{42}});
+
+    [[maybe_unused]] std::same_as<zoned_time&> decltype(auto) _ = zt = time_point{duration{99}};
+    assert(zt.get_time_zone() == cr::locate_zone("UTC"));
+    assert(zt.get_sys_time() == time_point{duration{99}});
+  }
+  {
+    using duration   = cr::milliseconds;
+    using time_point = cr::sys_time<duration>;
+    using zoned_time = cr::zoned_time<duration>;
+    zoned_time zt{time_point{duration{42}}};
+
+    assert(zt.get_time_zone() == cr::locate_zone("UTC"));
+    assert(zt.get_sys_time() == time_point{duration{42}});
+
+    [[maybe_unused]] std::same_as<zoned_time&> decltype(auto) _ = zt = time_point{duration{99}};
+    assert(zt.get_time_zone() == cr::locate_zone("UTC"));
+    assert(zt.get_sys_time() == time_point{duration{99}});
+  }
+  {
+    using duration   = cr::seconds;
+    using time_point = cr::sys_time<duration>;
+    using zoned_time = cr::zoned_time<duration>;
+    zoned_time zt{time_point{duration{42}}};
+
+    assert(zt.get_time_zone() == cr::locate_zone("UTC"));
+    assert(zt.get_sys_time() == time_point{duration{42}});
+
+    [[maybe_unused]] std::same_as<zoned_time&> decltype(auto) _ = zt = time_point{duration{99}};
+    assert(zt.get_time_zone() == cr::locate_zone("UTC"));
+    assert(zt.get_sys_time() == time_point{duration{99}});
+  }
+  {
+    using duration   = cr::days;
+    using time_point = cr::sys_time<duration>;
+    using zoned_time = cr::zoned_time<duration>;
+    zoned_time zt{time_point{duration{42}}};
+
+    assert(zt.get_time_zone() == cr::locate_zone("UTC"));
+    assert(zt.get_sys_time() == time_point{duration{42}});
+
+    [[maybe_unused]] std::same_as<zoned_time&> decltype(auto) _ = zt = time_point{duration{99}};
+    assert(zt.get_time_zone() == cr::locate_zone("UTC"));
+    assert(zt.get_sys_time() == time_point{duration{99}});
+  }
+  {
+    using duration   = cr::weeks;
+    using time_point = cr::sys_time<duration>;
+    using zoned_time = cr::zoned_time<duration>;
+    zoned_time zt{time_point{duration{42}}};
+
+    assert(zt.get_time_zone() == cr::locate_zone("UTC"));
+    assert(zt.get_sys_time() == time_point{duration{42}});
+
+    [[maybe_unused]] std::same_as<zoned_time&> decltype(auto) _ = zt = time_point{duration{99}};
+    assert(zt.get_time_zone() == cr::locate_zone("UTC"));
+    assert(zt.get_sys_time() == time_point{duration{99}});
+  }
+  {
+    using duration   = cr::months;
+    using time_point = cr::sys_time<duration>;
+    using zoned_time = cr::zoned_time<duration>;
+    zoned_time zt{time_point{duration{42}}};
+
+    assert(zt.get_time_zone() == cr::locate_zone("UTC"));
+    assert(zt.get_sys_time() == time_point{duration{42}});
+
+    [[maybe_unused]] std::same_as<zoned_time&> decltype(auto) _ = zt = time_point{duration{99}};
+    assert(zt.get_time_zone() == cr::locate_zone("UTC"));
+    assert(zt.get_sys_time() == time_point{duration{99}});
+  }
+  {
+    using duration   = cr::years;
+    using time_point = cr::sys_time<duration>;
+    using zoned_time = cr::zoned_time<duration>;
+    zoned_time zt{time_point{duration{42}}};
+
+    assert(zt.get_time_zone() == cr::locate_zone("UTC"));
+    assert(zt.get_sys_time() == time_point{duration{42}});
+
+    [[maybe_unused]] std::same_as<zoned_time&> decltype(auto) _ = zt = time_point{duration{99}};
+    assert(zt.get_time_zone() == cr::locate_zone("UTC"));
+    assert(zt.get_sys_time() == time_point{duration{99}});
+  }
+
+  return 0;
+}