1 files changed, 138 insertions, 0 deletions
diff --git a/libstdc++-v3/testsuite/23_containers/unordered_multimap/modifiers/extract.cc b/libstdc++-v3/testsuite/23_containers/unordered_multimap/modifiers/extract.cc
new file mode 100644
index 00000000000..635e7d0acd3
--- /dev/null
+++ b/libstdc++-v3/testsuite/23_containers/unordered_multimap/modifiers/extract.cc
@@ -0,0 +1,138 @@
+// Copyright (C) 2016 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// { dg-options "-std=gnu++17" }
+
+#include <unordered_map>
+#include <testsuite_hooks.h>
+
+using test_type = std::unordered_multimap<int, int>;
+
+void
+test01()
+{
+  bool test __attribute__((unused)) = true;
+
+  test_type c{ {1, 10}, { 1, 11 }, {2, 20}, { 2, 21}, {3, 30}, { 3, 31 } };
+  test_type::node_type node;
+  test_type::iterator pos;
+
+  node = c.extract(0);
+  VERIFY( !node );
+  VERIFY( node.empty() );
+  VERIFY( c.size() == 6 );
+
+  pos = c.insert(std::move(node));
+  VERIFY( !node );
+  VERIFY( node.empty() );
+  VERIFY( c.size() == 6 );
+  VERIFY( pos == c.end() );
+
+  node = c.extract(1);
+  VERIFY( (bool)node );
+  VERIFY( !node.empty() );
+  VERIFY( c.size() == 5 );
+  VERIFY( node.get_allocator() == c.get_allocator() );
+  VERIFY( node.key() == 1 );
+  int mapped = node.mapped();
+  VERIFY( mapped == 10 || mapped == 11 );
+
+  node.key() = 4;
+  node.mapped() = 40;
+  VERIFY( node.key() == 4 );
+  VERIFY( node.mapped() == 40 );
+
+  pos = c.insert(std::move(node));
+  VERIFY( !node );
+  VERIFY( node.empty() );
+  VERIFY( c.size() == 6 );
+  VERIFY( pos != c.end() );
+  VERIFY( pos->first == 4 );
+  VERIFY( pos->second == 40 );
+
+  pos = c.insert(c.begin(), std::move(node));
+  VERIFY( !node );
+  VERIFY( node.empty() );
+  VERIFY( c.size() == 6 );
+  VERIFY( pos == c.end() );
+
+  node = c.extract(1);
+  mapped = node.mapped();
+  pos = c.insert(c.begin(), std::move(node));
+  VERIFY( !node );
+  VERIFY( c.size() == 6 );
+  VERIFY( pos != c.end() );
+  VERIFY( pos->first == 1 );
+  VERIFY( pos->second == mapped );
+
+  test_type c2 = c;
+  node = c2.extract(1);
+  mapped = node.mapped();
+  pos = c.insert(std::move(node));
+  VERIFY( pos != c.end() );
+  VERIFY( node.empty() );
+  VERIFY( pos->first == 1 );
+  VERIFY( pos->second == mapped );
+}
+
+void
+test02()
+{
+  bool test __attribute__((unused)) = true;
+
+  test_type c{ {1, 10}, { 1, 11 }, {2, 20}, { 2, 21}, {3, 30}, { 3, 31 } };
+  test_type::node_type node;
+  test_type::iterator pos;
+
+  const int key = c.begin()->first;
+  const int mapped = c.begin()->second;
+  node = c.extract(c.begin());
+  VERIFY( !node.empty() );
+  VERIFY( c.size() == 5 );
+  VERIFY( node.get_allocator() == c.get_allocator() );
+  VERIFY( node.key() == key );
+  VERIFY( node.mapped() == mapped );
+
+  pos = c.insert(std::move(node));
+  VERIFY( node.empty() );
+  VERIFY( c.size() == 6 );
+  VERIFY( pos != c.end() );
+  VERIFY( pos->first == key );
+  VERIFY( pos->second == mapped );
+}
+
+void
+test03()
+{
+  struct hash : std::hash<int> { };
+  struct equal : std::equal_to<int> { };
+  using std::is_same_v;
+  using compat_type1 = std::unordered_multimap<int, int, hash, equal>;
+  static_assert( is_same_v<test_type::node_type, compat_type1::node_type> );
+  using compat_type2 = std::unordered_map<int, int>;
+  static_assert( is_same_v<test_type::node_type, compat_type2::node_type> );
+  using compat_type3 = std::unordered_map<int, int, hash, equal>;
+  static_assert( is_same_v<test_type::node_type, compat_type3::node_type> );
+}
+
+int
+main()
+{
+  test01();
+  test02();
+  test03();
+}