1 files changed, 97 insertions, 0 deletions
diff --git a/test/std/thread/futures/futures.unique_future/wait_for.pass.cpp b/test/std/thread/futures/futures.unique_future/wait_for.pass.cpp
new file mode 100644
index 000000000000..0a381d9ca2f0
--- /dev/null
+++ b/test/std/thread/futures/futures.unique_future/wait_for.pass.cpp
@@ -0,0 +1,97 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: libcpp-has-no-threads
+
+// <future>
+
+// class future<R>
+
+// template <class Rep, class Period>
+//   future_status
+//   wait_for(const chrono::duration<Rep, Period>& rel_time) const;
+
+#include <future>
+#include <cassert>
+
+typedef std::chrono::milliseconds ms;
+
+void func1(std::promise<int> p)
+{
+    std::this_thread::sleep_for(ms(500));
+    p.set_value(3);
+}
+
+int j = 0;
+
+void func3(std::promise<int&> p)
+{
+    std::this_thread::sleep_for(ms(500));
+    j = 5;
+    p.set_value(j);
+}
+
+void func5(std::promise<void> p)
+{
+    std::this_thread::sleep_for(ms(500));
+    p.set_value();
+}
+
+int main()
+{
+    typedef std::chrono::high_resolution_clock Clock;
+    {
+        typedef int T;
+        std::promise<T> p;
+        std::future<T> f = p.get_future();
+        std::thread(func1, std::move(p)).detach();
+        assert(f.valid());
+        assert(f.wait_for(ms(300)) == std::future_status::timeout);
+        assert(f.valid());
+        assert(f.wait_for(ms(300)) == std::future_status::ready);
+        assert(f.valid());
+        Clock::time_point t0 = Clock::now();
+        f.wait();
+        Clock::time_point t1 = Clock::now();
+        assert(f.valid());
+        assert(t1-t0 < ms(50));
+    }
+    {
+        typedef int& T;
+        std::promise<T> p;
+        std::future<T> f = p.get_future();
+        std::thread(func3, std::move(p)).detach();
+        assert(f.valid());
+        assert(f.wait_for(ms(300)) == std::future_status::timeout);
+        assert(f.valid());
+        assert(f.wait_for(ms(300)) == std::future_status::ready);
+        assert(f.valid());
+        Clock::time_point t0 = Clock::now();
+        f.wait();
+        Clock::time_point t1 = Clock::now();
+        assert(f.valid());
+        assert(t1-t0 < ms(50));
+    }
+    {
+        typedef void T;
+        std::promise<T> p;
+        std::future<T> f = p.get_future();
+        std::thread(func5, std::move(p)).detach();
+        assert(f.valid());
+        assert(f.wait_for(ms(300)) == std::future_status::timeout);
+        assert(f.valid());
+        assert(f.wait_for(ms(300)) == std::future_status::ready);
+        assert(f.valid());
+        Clock::time_point t0 = Clock::now();
+        f.wait();
+        Clock::time_point t1 = Clock::now();
+        assert(f.valid());
+        assert(t1-t0 < ms(50));
+    }
+}