1 files changed, 90 insertions, 0 deletions
diff --git a/libcxx/test/std/containers/associative/set/emplace.pass.cpp b/libcxx/test/std/containers/associative/set/emplace.pass.cpp
new file mode 100644
index 00000000000..5ebab4d24b9
--- /dev/null
+++ b/libcxx/test/std/containers/associative/set/emplace.pass.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class set
+
+// template <class... Args>
+//   pair<iterator, bool> emplace(Args&&... args);
+
+#include <set>
+#include <cassert>
+
+#include "../../Emplaceable.h"
+#include "DefaultOnly.h"
+#include "min_allocator.h"
+
+int main()
+{
+#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
+    {
+        typedef std::set<DefaultOnly> M;
+        typedef std::pair<M::iterator, bool> R;
+        M m;
+        assert(DefaultOnly::count == 0);
+        R r = m.emplace();
+        assert(r.second);
+        assert(r.first == m.begin());
+        assert(m.size() == 1);
+        assert(*m.begin() == DefaultOnly());
+        assert(DefaultOnly::count == 1);
+
+        r = m.emplace();
+        assert(!r.second);
+        assert(r.first == m.begin());
+        assert(m.size() == 1);
+        assert(*m.begin() == DefaultOnly());
+        assert(DefaultOnly::count == 1);
+    }
+    assert(DefaultOnly::count == 0);
+    {
+        typedef std::set<Emplaceable> M;
+        typedef std::pair<M::iterator, bool> R;
+        M m;
+        R r = m.emplace();
+        assert(r.second);
+        assert(r.first == m.begin());
+        assert(m.size() == 1);
+        assert(*m.begin() == Emplaceable());
+        r = m.emplace(2, 3.5);
+        assert(r.second);
+        assert(r.first == next(m.begin()));
+        assert(m.size() == 2);
+        assert(*r.first == Emplaceable(2, 3.5));
+        r = m.emplace(2, 3.5);
+        assert(!r.second);
+        assert(r.first == next(m.begin()));
+        assert(m.size() == 2);
+        assert(*r.first == Emplaceable(2, 3.5));
+    }
+    {
+        typedef std::set<int> M;
+        typedef std::pair<M::iterator, bool> R;
+        M m;
+        R r = m.emplace(M::value_type(2));
+        assert(r.second);
+        assert(r.first == m.begin());
+        assert(m.size() == 1);
+        assert(*r.first == 2);
+    }
+#if __cplusplus >= 201103L
+    {
+        typedef std::set<int, std::less<int>, min_allocator<int>> M;
+        typedef std::pair<M::iterator, bool> R;
+        M m;
+        R r = m.emplace(M::value_type(2));
+        assert(r.second);
+        assert(r.first == m.begin());
+        assert(m.size() == 1);
+        assert(*r.first == 2);
+    }
+#endif
+#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
+}