1 files changed, 75 insertions, 0 deletions
diff --git a/test/std/containers/unord/unord.set/bucket.pass.cpp b/test/std/containers/unord/unord.set/bucket.pass.cpp
new file mode 100644
index 0000000000000..0dae664e0b23e
--- /dev/null
+++ b/test/std/containers/unord/unord.set/bucket.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// size_type bucket(const key_type& __k) const;
+
+#ifdef _LIBCPP_DEBUG
+#define _LIBCPP_ASSERT(x, m) ((x) ? (void)0 : std::exit(0))
+#endif
+
+#include <unordered_set>
+#include <cassert>
+
+#include "min_allocator.h"
+
+int main()
+{
+    {
+        typedef std::unordered_set<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        const C c(std::begin(a), std::end(a));
+        size_t bc = c.bucket_count();
+        assert(bc >= 5);
+        for (size_t i = 0; i < 13; ++i)
+            assert(c.bucket(i) == i % bc);
+    }
+#if __cplusplus >= 201103L
+    {
+        typedef std::unordered_set<int, std::hash<int>, std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        const C c(std::begin(a), std::end(a));
+        size_t bc = c.bucket_count();
+        assert(bc >= 5);
+        for (size_t i = 0; i < 13; ++i)
+            assert(c.bucket(i) == i % bc);
+    }
+#endif
+#if _LIBCPP_DEBUG_LEVEL >= 1
+    {
+        typedef std::unordered_set<int> C;
+        C c;
+        C::size_type i = c.bucket(3);
+        assert(false);
+    }
+#endif
+}