mirror of git://gcc.gnu.org/git/gcc.git
120 lines
2.9 KiB
C++
120 lines
2.9 KiB
C++
// Copyright (C) 2016 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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// { dg-options "-std=gnu++17" }
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#include <map>
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#include <algorithm>
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#include <testsuite_hooks.h>
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using test_type = std::multimap<int, int>;
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void
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test01()
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{
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bool test __attribute__((unused)) = true;
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const test_type c0{ {1, 10}, {1, 11}, {2, 20}, {2, 21}, {3, 30}, {3, 31} };
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test_type c1 = c0, c2 = c0;
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c1.merge(c2);
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for (auto& i : c1)
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VERIFY( c1.count(i.first) == (2 * c0.count(i.first)) );
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VERIFY( c2.empty() );
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c1.clear();
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c2 = c0;
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c1.merge(std::move(c2));
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VERIFY( c1 == c0 );
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VERIFY( c2.empty() );
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}
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void
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test02()
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{
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bool test __attribute__((unused)) = true;
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const test_type c0{ {1, 10}, {1, 11}, {2, 20}, {2, 21}, {3, 30}, {3, 31} };
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test_type c1 = c0;
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std::multimap<int, int, std::less<>> c2( c0.begin(), c0.end() );
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c1.merge(c2);
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VERIFY( c1.size() == (2 * c0.size()) );
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for (auto& i : c1)
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VERIFY( c1.count(i.first) == (2 * c0.count(i.first)) );
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VERIFY( c2.empty() );
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c1.clear();
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c2.insert( c0.begin(), c0.end() );
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c1.merge(std::move(c2));
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VERIFY( c1 == c0 );
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VERIFY( c2.empty() );
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}
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void
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test03()
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{
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bool test __attribute__((unused)) = true;
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const test_type c0{ {1, 10}, {1, 11}, {2, 20}, {2, 21}, {3, 30}, {3, 31} };
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test_type c1 = c0;
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std::multimap<int, int, std::greater<>> c2( c0.begin(), c0.end() );
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c1.merge(c2);
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VERIFY( c1.size() == (2 * c0.size()) );
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for (auto& i : c1)
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VERIFY( c1.count(i.first) == (2 * c0.count(i.first)) );
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VERIFY( c2.empty() );
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c1.clear();
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c2.insert( c0.begin(), c0.end() );
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c1.merge(std::move(c2));
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VERIFY( c1 == c0 );
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VERIFY( c2.empty() );
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}
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void
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test04()
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{
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bool test __attribute__((unused)) = true;
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const test_type c0{ {1, 10}, {1, 11}, {2, 20}, {2, 21}, {3, 30}, {3, 31} };
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test_type c1 = c0;
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std::map<int, int, std::greater<>> c2( c0.begin(), c0.end() );
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c1.merge(c2);
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VERIFY( c1.size() == (1.5 * c0.size()) );
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for (auto& i : c1)
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VERIFY( c1.count(i.first) == (1.5 * c0.count(i.first)) );
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VERIFY( c2.empty() );
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c1.clear();
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c2.insert( c0.begin(), c0.end() );
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c1.merge(std::move(c2));
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VERIFY( c1.size() == (0.5 * c0.size()) );
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VERIFY( c2.empty() );
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}
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int
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main()
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{
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test01();
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test02();
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test03();
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test04();
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}
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