literal suffixes for std::chrono

llvm-svn: 187078

1 files changed, 59 insertions, 0 deletions

diff --git a/libcxx/test/utilities/time/time.duration/time.duration.literals b/libcxx/test/utilities/time/time.duration/time.duration.literals
new file mode 100644
index 00000000000..366f628a658
--- /dev/null
+++ b/libcxx/test/utilities/time/time.duration/time.duration.literals
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+int main()
+{
+#if _LIBCPP_STD_VER > 11 
+	using namespace std::literals::chrono_literals;
+
+//	Make sure the types are right
+	static_assert ( std::is_same<decltype( 3h   ), std::chrono::hours>::value, "" );
+	static_assert ( std::is_same<decltype( 3min ), std::chrono::minutes>::value, "" );
+	static_assert ( std::is_same<decltype( 3s   ), std::chrono::seconds>::value, "" );
+	static_assert ( std::is_same<decltype( 3ms  ), std::chrono::milliseconds>::value, "" );
+	static_assert ( std::is_same<decltype( 3us  ), std::chrono::microseconds>::value, "" );
+	static_assert ( std::is_same<decltype( 3ns  ), std::chrono::nanoseconds>::value, "" );
+	
+	std::chrono::hours h = 4h;
+	assert ( h == std::chrono::hours(4));
+	auto h2 = 4.0h;
+	assert ( h == h2 );
+	
+	std::chrono::minutes min = 36min;
+	assert ( min == std::chrono::minutes(36));
+	auto min2 = 36.0min;
+	assert ( min == min2 );
+
+	std::chrono::seconds s = 24s;
+	assert ( s == std::chrono::seconds(24));
+	auto s2 = 24.0s;
+	assert ( s == s2 );
+
+	std::chrono::milliseconds ms = 247ms;
+	assert ( ms == std::chrono::milliseconds(247));
+	auto ms2 = 247.0ms;
+	assert ( ms == ms2 );
+
+	std::chrono::microseconds us = 867us;
+	assert ( us == std::chrono::microseconds(867));
+	auto us2 = 867.0us;
+	assert ( us == us2 );
+
+	std::chrono::nanoseconds ns = 645ns;
+	assert ( ns == std::chrono::nanoseconds(645));
+	auto ns2 = 645.ns;
+	assert ( ns == ns2 );
+#endif
+}