Move test into test/std subdirectory.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@224658 91177308-0d34-0410-b5e6-96231b3b80d8

test/std/algorithms/alg.modifying.operations/alg.swap/iter_swap.pass.cpp

@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<Iterator Iter1, Iterator Iter2>
+//   requires HasSwap<Iter1::reference, Iter2::reference>
+//   void
+//   iter_swap(Iter1 a, Iter2 b);
+
+#include <algorithm>
+#include <cassert>
+
+int main()
+{
+    int i = 1;
+    int j = 2;
+    std::iter_swap(&i, &j);
+    assert(i == 2);
+    assert(j == 1);
+}