vendor/libc++/libc++-release_370-r246257

1 files changed, 30 insertions, 0 deletions

diff --git a/test/std/algorithms/alg.modifying.operations/alg.random.shuffle/random_shuffle.pass.cpp b/test/std/algorithms/alg.modifying.operations/alg.random.shuffle/random_shuffle.pass.cpp
new file mode 100644
index 0000000000000..a14ccf9e5e6c7
--- /dev/null
+++ b/test/std/algorithms/alg.modifying.operations/alg.random.shuffle/random_shuffle.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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<RandomAccessIterator Iter>
+//   requires ShuffleIterator<Iter>
+//   void
+//   random_shuffle(Iter first, Iter last);
+
+#include <algorithm>
+#include <cassert>
+
+int main()
+{
+    int ia[] = {1, 2, 3, 4};
+    int ia1[] = {1, 4, 3, 2};
+    int ia2[] = {4, 1, 2, 3};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    std::random_shuffle(ia, ia+sa);
+    assert(std::equal(ia, ia+sa, ia1));
+    std::random_shuffle(ia, ia+sa);
+    assert(std::equal(ia, ia+sa, ia2));
+}