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// Copyright (C) 2020 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#include <QtTest/QtTest>
#include <QtCore/private/qduplicatetracker_p.h>
#include <QObject>
#include <string>
#include <utility>
class tst_QDuplicateTracker : public QObject
{
Q_OBJECT
private slots:
void hasSeen();
void clear();
void appendTo();
void appendTo_special();
};
void tst_QDuplicateTracker::hasSeen()
{
{
QDuplicateTracker<int, 2> tracker;
QVERIFY(!tracker.hasSeen(0));
QVERIFY(tracker.hasSeen(0));
QVERIFY(!tracker.hasSeen(1));
QVERIFY(tracker.hasSeen(1));
// past the prealloc amount
QVERIFY(!tracker.hasSeen(2));
QVERIFY(tracker.hasSeen(2));
}
{
QDuplicateTracker<QString, 2> tracker;
QString string1("string1");
QString string2("string2");
QString string2_2("string2");
QString string3("string3");
// Move when seen
QVERIFY(!tracker.hasSeen(string1));
QVERIFY(tracker.hasSeen(std::move(string1)));
// Move when unseen
QVERIFY(!tracker.hasSeen(std::move(string2)));
QVERIFY(tracker.hasSeen(string2_2));
// Past the prealloc amount
QVERIFY(!tracker.hasSeen(string3));
QVERIFY(tracker.hasSeen(string3));
}
{
QDuplicateTracker<std::string, 2> tracker;
std::string string1("string1");
std::string string2("string2");
std::string string2_2("string2");
std::string string3("string3");
// Move when seen
QVERIFY(!tracker.hasSeen(string1));
QVERIFY(tracker.hasSeen(std::move(string1)));
// Move when unseen
QVERIFY(!tracker.hasSeen(std::move(string2)));
QVERIFY(tracker.hasSeen(string2_2));
// Past the prealloc amount
QVERIFY(!tracker.hasSeen(string3));
QVERIFY(tracker.hasSeen(string3));
}
}
void tst_QDuplicateTracker::clear()
{
QDuplicateTracker<int, 2> tracker;
QVERIFY(!tracker.hasSeen(0));
QVERIFY(tracker.hasSeen(0));
QVERIFY(!tracker.hasSeen(1));
QVERIFY(tracker.hasSeen(1));
tracker.clear();
QVERIFY(!tracker.hasSeen(0));
QVERIFY(tracker.hasSeen(0));
QVERIFY(!tracker.hasSeen(1));
QVERIFY(tracker.hasSeen(1));
}
void tst_QDuplicateTracker::appendTo()
{
QDuplicateTracker<int, 2> tracker;
QVERIFY(!tracker.hasSeen(0));
QVERIFY(!tracker.hasSeen(1));
QList<int> a;
a.append(-1);
tracker.appendTo(a);
std::sort(a.begin(), a.end());
QCOMPARE(a, QList<int>({ -1, 0, 1 }));
QList<int> b;
tracker.appendTo(b);
std::sort(b.begin(), b.end());
QCOMPARE(b, QList<int>({ 0, 1 }));
QVERIFY(!tracker.hasSeen(2));
QList<int> c;
std::move(tracker).appendTo(c);
std::sort(c.begin(), c.end());
QCOMPARE(c, QList<int>({ 0, 1, 2 }));
if (QDuplicateTracker<int, 2>::uses_pmr) {
// the following is only true if we use the std container
QVERIFY(!tracker.hasSeen(0));
QVERIFY(!tracker.hasSeen(1));
QVERIFY(!tracker.hasSeen(2));
}
}
struct ConstructionCounted
{
ConstructionCounted(int i) : i(i) { }
ConstructionCounted(ConstructionCounted &&other) noexcept
: i(other.i), copies(other.copies), moves(other.moves + 1)
{
// set to some easily noticeable values
other.i = -64;
other.copies = -64;
other.moves = -64;
}
ConstructionCounted &operator=(ConstructionCounted &&other) noexcept
{
ConstructionCounted moved = std::move(other);
swap(moved);
// set to some easily noticeable values
other.i = -64;
other.copies = -64;
other.moves = -64;
return *this;
}
ConstructionCounted(const ConstructionCounted &other) noexcept
: i(other.i), copies(other.copies + 1), moves(other.moves)
{
}
ConstructionCounted &operator=(const ConstructionCounted &other) noexcept
{
ConstructionCounted copy = other;
swap(copy);
return *this;
}
~ConstructionCounted() = default;
friend bool operator==(const ConstructionCounted &lhs, const ConstructionCounted &rhs)
{
return lhs.i == rhs.i;
}
QString toString() { return QString::number(i); }
void swap(ConstructionCounted &other)
{
std::swap(copies, other.copies);
std::swap(i, other.i);
std::swap(moves, other.moves);
}
int i;
int copies = 0;
int moves = 0;
};
// for std::unordered_set
namespace std {
template<>
struct hash<ConstructionCounted>
{
std::size_t operator()(const ConstructionCounted &c) const noexcept { return c.i; }
};
}
// for QSet
size_t qHash(const ConstructionCounted &c, std::size_t seed = 0)
{
return qHash(c.i, seed);
}
void tst_QDuplicateTracker::appendTo_special()
{
QDuplicateTracker<ConstructionCounted> tracker(3);
QVERIFY(!tracker.hasSeen(1));
QVERIFY(!tracker.hasSeen(2));
QVERIFY(!tracker.hasSeen(3));
QVERIFY(tracker.hasSeen(1));
QVERIFY(tracker.hasSeen(2));
QVERIFY(tracker.hasSeen(3));
{
QList<ConstructionCounted> a;
a.reserve(3);
tracker.appendTo(a);
for (const auto &counter : a) {
QCOMPARE(counter.moves, 1);
QCOMPARE(counter.copies, 1);
}
}
QVERIFY(tracker.hasSeen(1));
QVERIFY(tracker.hasSeen(2));
QVERIFY(tracker.hasSeen(3));
{
QList<ConstructionCounted> a;
a.reserve(3);
std::move(tracker).appendTo(a);
if (QDuplicateTracker<ConstructionCounted>::uses_pmr) {
// the following is only true if we use the std container
for (const auto &counter : a) {
QCOMPARE(counter.moves, 2);
QCOMPARE(counter.copies, 0);
}
QVERIFY(!tracker.hasSeen(1));
QVERIFY(!tracker.hasSeen(2));
QVERIFY(!tracker.hasSeen(3));
}
}
}
QTEST_MAIN(tst_QDuplicateTracker)
#include "tst_qduplicatetracker.moc"
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