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diff --git a/o3tl/qa/test-lru_map.cxx b/o3tl/qa/test-lru_map.cxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ */
+
+#include <cppunit/TestAssert.h>
+#include <cppunit/TestFixture.h>
+#include <cppunit/extensions/HelperMacros.h>
+
+#include <o3tl/lru_map.hxx>
+
+#include <o3tl/hash_combine.hxx>
+
+using namespace ::o3tl;
+
+class lru_map_test : public CppUnit::TestFixture
+{
+public:
+ void testBaseUsage();
+ void testReplaceKey();
+ void testReplaceValue();
+ void testLruRemoval();
+ void testCustomHash();
+ void testRemoveIf();
+ void testChangeMaxSize();
+ void testCustomItemSize();
+
+ CPPUNIT_TEST_SUITE(lru_map_test);
+ CPPUNIT_TEST(testBaseUsage);
+ CPPUNIT_TEST(testReplaceKey);
+ CPPUNIT_TEST(testReplaceValue);
+ CPPUNIT_TEST(testLruRemoval);
+ CPPUNIT_TEST(testCustomHash);
+ CPPUNIT_TEST(testRemoveIf);
+ CPPUNIT_TEST(testChangeMaxSize);
+ CPPUNIT_TEST(testCustomItemSize);
+ CPPUNIT_TEST_SUITE_END();
+};
+
+void lru_map_test::testBaseUsage()
+{
+ o3tl::lru_map<int, int> lru(10);
+ lru.insert(std::make_pair<int, int>(1, 1));
+
+ std::pair<int, int> pair;
+ for (int i = 2; i < 7; i++)
+ {
+ pair.first = pair.second = i;
+ lru.insert(pair);
+ }
+
+ CPPUNIT_ASSERT_EQUAL(size_t(6), lru.size());
+
+ o3tl::lru_map<int, int>::const_iterator it;
+
+ it = lru.find(2);
+ CPPUNIT_ASSERT(it != lru.end());
+ CPPUNIT_ASSERT_EQUAL(2, it->second);
+
+ it = lru.find(5);
+ CPPUNIT_ASSERT(it != lru.end());
+ CPPUNIT_ASSERT_EQUAL(5, it->second);
+
+ it = lru.find(0);
+ CPPUNIT_ASSERT(bool(it == lru.end()));
+}
+
+void lru_map_test::testReplaceValue()
+{
+ o3tl::lru_map<int, int> lru(2);
+ // check if map is empty
+ CPPUNIT_ASSERT_EQUAL(size_t(0), lru.size());
+
+ // check if inserting entry with same key replaces the value
+
+ // inserting new entry
+ lru.insert(std::make_pair<int, int>(1, 2));
+ CPPUNIT_ASSERT_EQUAL(size_t(1), lru.size());
+ CPPUNIT_ASSERT_EQUAL(2, lru.find(1)->second);
+
+ // inserting new entry with key that already exists
+ lru.insert(std::make_pair<int, int>(1, 4));
+ CPPUNIT_ASSERT_EQUAL(size_t(1), lru.size());
+ CPPUNIT_ASSERT_EQUAL(4, lru.find(1)->second);
+
+ // inserting new entry
+ lru.insert(std::make_pair<int, int>(2, 200));
+ CPPUNIT_ASSERT_EQUAL(size_t(2), lru.size());
+ CPPUNIT_ASSERT_EQUAL(4, lru.find(1)->second);
+ CPPUNIT_ASSERT_EQUAL(200, lru.find(2)->second);
+
+ // check if insert with same key, moves the entry back of the lru queue
+
+ // inserting new entry with key that already exists
+ lru.insert(std::make_pair<int, int>(1, 6));
+ // inserting new entry, lru removed
+ lru.insert(std::make_pair<int, int>(3, 300));
+
+ CPPUNIT_ASSERT_EQUAL(size_t(2), lru.size());
+ CPPUNIT_ASSERT_EQUAL(6, lru.find(1)->second);
+ CPPUNIT_ASSERT_EQUAL(300, lru.find(3)->second);
+}
+
+void lru_map_test::testReplaceKey()
+{
+ o3tl::lru_map<int, int> lru(2);
+
+ // inserting new entry
+ lru.insert(std::make_pair<int, int>(1, 100));
+ CPPUNIT_ASSERT_EQUAL(size_t(1), lru.size());
+ CPPUNIT_ASSERT_EQUAL(100, lru.find(1)->second);
+ CPPUNIT_ASSERT(bool(lru.find(2) == lru.end()));
+ CPPUNIT_ASSERT(bool(lru.find(3) == lru.end()));
+
+ // inserting new entry
+ lru.insert(std::make_pair<int, int>(2, 200));
+ CPPUNIT_ASSERT_EQUAL(size_t(2), lru.size());
+ CPPUNIT_ASSERT_EQUAL(100, lru.find(1)->second);
+ CPPUNIT_ASSERT_EQUAL(200, lru.find(2)->second);
+ CPPUNIT_ASSERT(bool(lru.find(3) == lru.end()));
+
+ // inserting new entry, lru entry is removed
+ lru.insert(std::make_pair<int, int>(3, 300));
+ CPPUNIT_ASSERT_EQUAL(size_t(2), lru.size());
+ CPPUNIT_ASSERT(bool(lru.find(1) == lru.end()));
+ CPPUNIT_ASSERT_EQUAL(200, lru.find(2)->second);
+ CPPUNIT_ASSERT_EQUAL(300, lru.find(3)->second);
+
+ // inserting new entry, lru entry is removed
+ std::pair<int, int> pair(4, 400);
+ lru.insert(pair);
+ CPPUNIT_ASSERT_EQUAL(size_t(2), lru.size());
+ CPPUNIT_ASSERT(bool(lru.find(1) == lru.end()));
+ CPPUNIT_ASSERT(bool(lru.find(2) == lru.end()));
+ CPPUNIT_ASSERT_EQUAL(300, lru.find(3)->second);
+ CPPUNIT_ASSERT_EQUAL(400, lru.find(4)->second);
+}
+
+void lru_map_test::testLruRemoval()
+{
+ o3tl::lru_map<int, int> lru(5);
+ CPPUNIT_ASSERT_EQUAL(size_t(0), lru.size());
+
+ // fill up...
+ lru.insert(std::make_pair<int, int>(1, 100));
+ lru.insert(std::make_pair<int, int>(2, 200));
+ lru.insert(std::make_pair<int, int>(3, 300));
+ lru.insert(std::make_pair<int, int>(4, 400));
+ lru.insert(std::make_pair<int, int>(5, 500));
+ CPPUNIT_ASSERT_EQUAL(size_t(5), lru.size());
+ CPPUNIT_ASSERT_EQUAL(100, lru.find(1)->second);
+ CPPUNIT_ASSERT_EQUAL(200, lru.find(2)->second);
+ CPPUNIT_ASSERT_EQUAL(300, lru.find(3)->second);
+ CPPUNIT_ASSERT_EQUAL(400, lru.find(4)->second);
+ CPPUNIT_ASSERT_EQUAL(500, lru.find(5)->second);
+
+ // add one more entry - lru entry should be removed
+ lru.insert(std::make_pair<int, int>(6, 600));
+
+ CPPUNIT_ASSERT_EQUAL(size_t(5), lru.size());
+ CPPUNIT_ASSERT_EQUAL(200, lru.find(2)->second);
+ CPPUNIT_ASSERT_EQUAL(300, lru.find(3)->second);
+ CPPUNIT_ASSERT_EQUAL(400, lru.find(4)->second);
+ CPPUNIT_ASSERT_EQUAL(500, lru.find(5)->second);
+ CPPUNIT_ASSERT_EQUAL(600, lru.find(6)->second);
+
+ // access the lru entry to put it at the back of the lru queue
+ lru.find(2);
+ // add new entry - lru entry should be removed
+ lru.insert(std::make_pair<int, int>(7, 700));
+
+ CPPUNIT_ASSERT_EQUAL(size_t(5), lru.size());
+ CPPUNIT_ASSERT_EQUAL(200, lru.find(2)->second);
+ CPPUNIT_ASSERT_EQUAL(400, lru.find(4)->second);
+ CPPUNIT_ASSERT_EQUAL(500, lru.find(5)->second);
+ CPPUNIT_ASSERT_EQUAL(600, lru.find(6)->second);
+ CPPUNIT_ASSERT_EQUAL(700, lru.find(7)->second);
+}
+
+namespace
+{
+struct TestClassKey
+{
+ int mA;
+ int mB;
+
+ TestClassKey(int a, int b)
+ : mA(a)
+ , mB(b)
+ {
+ }
+
+ bool operator==(TestClassKey const& aOther) const { return mA == aOther.mA && mB == aOther.mB; }
+};
+
+struct TestClassKeyHashFunction
+{
+ std::size_t operator()(TestClassKey const& aKey) const
+ {
+ std::size_t seed = 0;
+ o3tl::hash_combine(seed, aKey.mA);
+ o3tl::hash_combine(seed, aKey.mB);
+ return seed;
+ }
+};
+}
+
+void lru_map_test::testCustomHash()
+{
+ // check lru_map with custom hash function
+ o3tl::lru_map<TestClassKey, int, TestClassKeyHashFunction> lru(2);
+ CPPUNIT_ASSERT_EQUAL(size_t(0), lru.size());
+
+ lru.insert(std::make_pair<TestClassKey, int>(TestClassKey(1, 1), 2));
+ CPPUNIT_ASSERT_EQUAL(size_t(1), lru.size());
+
+ lru.insert(std::make_pair<TestClassKey, int>(TestClassKey(1, 1), 7));
+ CPPUNIT_ASSERT_EQUAL(size_t(1), lru.size());
+
+ lru.insert(std::make_pair<TestClassKey, int>(TestClassKey(1, 2), 9));
+ CPPUNIT_ASSERT_EQUAL(size_t(2), lru.size());
+
+ CPPUNIT_ASSERT(bool(lru.end() == lru.find(TestClassKey(0, 0)))); // non existent
+ CPPUNIT_ASSERT_EQUAL(7, lru.find(TestClassKey(1, 1))->second);
+ CPPUNIT_ASSERT_EQUAL(9, lru.find(TestClassKey(1, 2))->second);
+
+ lru.insert(std::make_pair<TestClassKey, int>(TestClassKey(2, 1), 13));
+
+ CPPUNIT_ASSERT_EQUAL(size_t(2), lru.size());
+
+ CPPUNIT_ASSERT(bool(lru.end() == lru.find(TestClassKey(1, 1))));
+ CPPUNIT_ASSERT_EQUAL(9, lru.find(TestClassKey(1, 2))->second);
+ CPPUNIT_ASSERT_EQUAL(13, lru.find(TestClassKey(2, 1))->second);
+}
+
+void lru_map_test::testRemoveIf()
+{
+ typedef o3tl::lru_map<int, int> IntMap;
+ typedef IntMap::key_value_pair_t IntMapPair;
+ struct limit_except : public std::exception
+ {
+ };
+
+ IntMap lru(6);
+ int i = 0;
+ for (; i < 8; i++)
+ lru.insert({ i, i });
+ CPPUNIT_ASSERT_EQUAL(size_t(6), lru.size());
+ // now contains 7..2
+
+ // remove everything < 4 from the back
+ try
+ {
+ lru.remove_if([](IntMapPair const& rPair) {
+ if (rPair.first >= 4)
+ throw limit_except();
+ return true;
+ });
+ CPPUNIT_ASSERT(false); // not reached
+ }
+ catch (limit_except&)
+ {
+ // contains 7..4
+ CPPUNIT_ASSERT_EQUAL(size_t(4), lru.size());
+ }
+
+ // remove all even numbers
+ lru.remove_if([](IntMapPair const& rPair) { return (0 == rPair.first % 2); });
+ CPPUNIT_ASSERT_EQUAL(size_t(2), lru.size());
+ // contains 7, 5
+
+ lru.insert({ 5, 5 });
+ // contains 5, 7
+
+ i = 5;
+ for (auto& rPair : lru)
+ {
+ CPPUNIT_ASSERT_EQUAL(i, rPair.first);
+ i += 2;
+ }
+
+ // remove the first item
+ lru.remove_if([](IntMapPair const& rPair) { return (rPair.first == 5); });
+ CPPUNIT_ASSERT_EQUAL(size_t(1), lru.size());
+
+ // remove the only item
+ lru.remove_if([](IntMapPair const& rPair) { return (rPair.first == 7); });
+ CPPUNIT_ASSERT_EQUAL(size_t(0), lru.size());
+}
+
+void lru_map_test::testChangeMaxSize()
+{
+ o3tl::lru_map<int, int> lru(3);
+ CPPUNIT_ASSERT_EQUAL(size_t(0), lru.size());
+ lru.insert({ 0, 0 });
+ lru.insert({ 1, 1 });
+ lru.insert({ 2, 2 });
+ CPPUNIT_ASSERT_EQUAL(size_t(3), lru.size());
+ lru.setMaxSize(1);
+ CPPUNIT_ASSERT_EQUAL(size_t(1), lru.size());
+}
+
+void lru_map_test::testCustomItemSize()
+{
+ struct cost_is_value
+ {
+ size_t operator()(int i) { return i; };
+ };
+ o3tl::lru_map<int, int, std::hash<int>, std::equal_to<int>, cost_is_value> lru(5);
+ lru.insert({ 1, 1 });
+ lru.insert({ 2, 2 });
+ // Adding this one will remove the first one, since then the total
+ // cost would be 6, more than the maximum 5.
+ lru.insert({ 3, 3 });
+ CPPUNIT_ASSERT_EQUAL(size_t(2), lru.size());
+ CPPUNIT_ASSERT_EQUAL(size_t(5), lru.total_size());
+ // Drop the last item.
+ lru.remove_if([](std::pair<int, int> i) { return i.first == 3; });
+ CPPUNIT_ASSERT_EQUAL(size_t(1), lru.size());
+ CPPUNIT_ASSERT_EQUAL(size_t(2), lru.total_size());
+ // This should drop everything except for keeping this one (an exception that
+ // keeps the last item inserted regardless of limit).
+ lru.insert({ 4, 4 });
+ CPPUNIT_ASSERT_EQUAL(size_t(1), lru.size());
+ CPPUNIT_ASSERT_EQUAL(size_t(4), lru.total_size());
+ lru.clear();
+ CPPUNIT_ASSERT_EQUAL(size_t(0), lru.size());
+ CPPUNIT_ASSERT_EQUAL(size_t(0), lru.total_size());
+}
+
+CPPUNIT_TEST_SUITE_REGISTRATION(lru_map_test);
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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