1 files changed, 80 insertions, 0 deletions
diff --git a/libcxx/test/std/iterators/iterator.container/empty.pass.cpp b/libcxx/test/std/iterators/iterator.container/empty.pass.cpp
new file mode 100644
index 00000000000..196a0e33bd9
--- /dev/null
+++ b/libcxx/test/std/iterators/iterator.container/empty.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+// template <class C> constexpr auto empty(const C& c) -> decltype(c.empty());       // C++17
+// template <class T, size_t N> constexpr bool empty(const T (&array)[N]) noexcept;  // C++17
+// template <class E> constexpr bool empty(initializer_list<E> il) noexcept;         // C++17
+
+#if __cplusplus <= 201402L
+int main () {}
+#else
+
+
+#include <__config>
+
+#include <iterator>
+#include <cassert>
+#include <vector>
+#include <array>
+#include <list>
+#include <initializer_list>
+
+template<typename C>
+void test_const_container( const C& c )
+{
+    assert ( std::empty(c)   == c.empty());
+}
+
+template<typename T>
+void test_const_container( const std::initializer_list<T>& c )
+{
+    assert ( std::empty(c)   == (c.size() == 0));
+}
+
+template<typename C>
+void test_container( C& c )
+{
+    assert ( std::empty(c)   == c.empty());
+}
+    
+template<typename T>
+void test_container( std::initializer_list<T>& c )
+{
+    assert ( std::empty(c)   == (c.size() == 0));
+}
+
+template<typename T, size_t Sz>
+void test_const_array( const T (&array)[Sz] )
+{
+    assert (!std::empty(array));
+}
+
+int main()
+{
+    std::vector<int> v; v.push_back(1);
+    std::list<int>   l; l.push_back(2);
+    std::array<int, 1> a; a[0] = 3;
+    std::initializer_list<int> il = { 4 };
+    
+    test_container ( v );
+    test_container ( l );
+    test_container ( a );
+    test_container ( il );
+
+    test_const_container ( v );
+    test_const_container ( l );
+    test_const_container ( a );
+    test_const_container ( il );
+    
+    static constexpr int arrA [] { 1, 2, 3 };
+    test_const_array ( arrA );
+}
+
+#endif