is_steady: testing type and value

Author: PaulXiCao

libcxx/test/std/time/time.clock/time.clock.gps/types.compile.pass.cpp

@@ -41,6 +41,8 @@ using period     = std::chrono::gps_clock::period;
 using duration   = std::chrono::gps_clock::duration;
 using time_point = std::chrono::gps_clock::time_point;
 
+[[maybe_unused]] constexpr std::same_as<const bool> decltype(auto) is_steady = std::chrono::gps_clock::is_steady;
+
 // Tests the values. part of them are implementation defined.
 LIBCPP_STATIC_ASSERT(std::same_as<rep, std::chrono::utc_clock::rep>);
 static_assert(std::is_arithmetic_v<rep>);
@@ -51,7 +53,7 @@ static_assert(std::same_as<period, std::ratio<period::num, period::den>>);
 
 static_assert(std::same_as<duration, std::chrono::duration<rep, period>>);
 static_assert(std::same_as<time_point, std::chrono::time_point<std::chrono::gps_clock>>);
-LIBCPP_STATIC_ASSERT(std::chrono::gps_clock::is_steady == false);
+LIBCPP_STATIC_ASSERT(is_steady == false);
 
 // typedefs
 static_assert(std::same_as<std::chrono::gps_time<int>, std::chrono::time_point<std::chrono::gps_clock, int>>);

libcxx/test/std/time/time.clock/time.clock.tai/types.compile.pass.cpp

@@ -41,6 +41,8 @@ using period     = std::chrono::tai_clock::period;
 using duration   = std::chrono::tai_clock::duration;
 using time_point = std::chrono::tai_clock::time_point;
 
+[[maybe_unused]] constexpr std::same_as<const bool> decltype(auto) is_steady = std::chrono::tai_clock::is_steady;
+
 // Tests the values. part of them are implementation defined.
 LIBCPP_STATIC_ASSERT(std::same_as<rep, std::chrono::utc_clock::rep>);
 static_assert(std::is_arithmetic_v<rep>);
@@ -51,7 +53,7 @@ static_assert(std::same_as<period, std::ratio<period::num, period::den>>);
 
 static_assert(std::same_as<duration, std::chrono::duration<rep, period>>);
 static_assert(std::same_as<time_point, std::chrono::time_point<std::chrono::tai_clock>>);
-LIBCPP_STATIC_ASSERT(std::chrono::tai_clock::is_steady == false);
+LIBCPP_STATIC_ASSERT(is_steady == false);
 
 // typedefs
 static_assert(std::same_as<std::chrono::tai_time<int>, std::chrono::time_point<std::chrono::tai_clock, int>>);

libcxx/test/std/time/time.clock/time.clock.utc/types.compile.pass.cpp

@@ -41,6 +41,8 @@ using period     = std::chrono::utc_clock::period;
 using duration   = std::chrono::utc_clock::duration;
 using time_point = std::chrono::utc_clock::time_point;
 
+[[maybe_unused]] constexpr std::same_as<const bool> decltype(auto) is_steady = std::chrono::utc_clock::is_steady;
+
 // Tests the values. Some of them are implementation-defined.
 LIBCPP_STATIC_ASSERT(std::same_as<rep, std::chrono::system_clock::rep>);
 static_assert(std::is_arithmetic_v<rep>);
@@ -51,7 +53,7 @@ static_assert(std::same_as<period, std::ratio<period::num, period::den>>);
 
 static_assert(std::same_as<duration, std::chrono::duration<rep, period>>);
 static_assert(std::same_as<time_point, std::chrono::time_point<std::chrono::utc_clock>>);
-LIBCPP_STATIC_ASSERT(std::chrono::utc_clock::is_steady == false);
+LIBCPP_STATIC_ASSERT(is_steady == false);
 
 // typedefs
 static_assert(std::same_as<std::chrono::utc_time<int>, std::chrono::time_point<std::chrono::utc_clock, int>>);