1 files changed, 1 insertions, 0 deletions

diff --git a/libcxx/test/utilities/time/time.duration/time.duration.arithmetic/op_+=.pass.cpp b/libcxx/test/utilities/time/time.duration/time.duration.arithmetic/op_+=.pass.cpp
new file mode 100644
index 00000000000..84c6fadf919
--- /dev/null
+++ b/libcxx/test/utilities/time/time.duration/time.duration.arithmetic/op_+=.pass.cpp
@@ -0,0 +1 @@
+//===----------------------------------------------------------------------===//
//
// ΚΚΚΚΚΚΚΚΚΚΚΚΚΚΚΚΚΚΚΚThe LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

// <chrono>

// duration

// duration& operator+=(const duration& d);

#include <chrono>
#include <cassert>

int main()
{
    std::chrono::seconds s(3);
    s += std::chrono::seconds(2);
    assert(s.count() == 5);
    s += std::chrono::minutes(2);
    assert(s.count() == 125);
}
\ No newline at end of file