1 files changed, 81 insertions, 0 deletions
diff --git a/test/std/containers/unord/unord.map/bucket_size.pass.cpp b/test/std/containers/unord/unord.map/bucket_size.pass.cpp
new file mode 100644
index 000000000000..f3ab8fff4e43
--- /dev/null
+++ b/test/std/containers/unord/unord.map/bucket_size.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// size_type bucket_size(size_type n) const
+
+#ifdef _LIBCPP_DEBUG
+#define _LIBCPP_ASSERT(x, m) ((x) ? (void)0 : std::exit(0))
+#endif
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+
+#include "min_allocator.h"
+
+int main()
+{
+    {
+        typedef std::unordered_map<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        const C c(std::begin(a), std::end(a));
+        assert(c.bucket_count() >= 5);
+        assert(c.bucket_size(0) == 0);
+        assert(c.bucket_size(1) == 1);
+        assert(c.bucket_size(2) == 1);
+        assert(c.bucket_size(3) == 1);
+        assert(c.bucket_size(4) == 1);
+    }
+#if __cplusplus >= 201103L
+    {
+        typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        const C c(std::begin(a), std::end(a));
+        assert(c.bucket_count() >= 5);
+        assert(c.bucket_size(0) == 0);
+        assert(c.bucket_size(1) == 1);
+        assert(c.bucket_size(2) == 1);
+        assert(c.bucket_size(3) == 1);
+        assert(c.bucket_size(4) == 1);
+    }
+#endif
+#if _LIBCPP_DEBUG_LEVEL >= 1
+    {
+        typedef std::unordered_map<int, std::string> C;
+        C c;
+        C::size_type i = c.bucket_size(3);
+        assert(false);
+    }
+#endif
+}