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// Copyright (C) 2023 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include <QTest>
#include <QString>
#include <utils/synchronizedvalue.h>
namespace Utils {
struct TestData
{
TestData() = default;
TestData(int iValue)
: i(iValue)
{}
bool operator==(const TestData &other) const { return i == other.i && str == other.str; }
bool operator!=(const TestData &other) const { return !(*this == other); }
QString str;
int i{20};
};
class tst_synchronizedvalue : public QObject
{
Q_OBJECT
private slots:
void initTestCase() {}
void read()
{
SynchronizedValue<TestData> data;
data.read([](const auto &d) {
QCOMPARE(d.str, QString());
QCOMPARE(d.i, 20);
});
}
void ctor()
{
SynchronizedValue<TestData> data(200);
QCOMPARE(data.get<int>([](const auto &d) { return d.i; }), 200);
}
void initializerCtor()
{
SynchronizedValue<QList<int>> data({1, 2, 3});
QCOMPARE(data.get<QList<int>>([](const auto &d) { return d; }), QList<int>({1, 2, 3}));
}
void get()
{
SynchronizedValue<TestData> data(200);
QCOMPARE(data.get<int>([](const auto &d) { return d.i; }), 200);
}
void constLock()
{
SynchronizedValue<TestData> data(200);
QCOMPARE(data.readLocked()->i, 200);
QCOMPARE(data.get().i, 200);
auto lk = data.readLocked();
QCOMPARE(lk->i, 200);
// This should fail to compile:
// data.readLocked()->i = 200;
}
void lock()
{
SynchronizedValue<TestData> data(123);
data.writeLocked()->i = 200;
QCOMPARE(data.get<int>([](const auto &d) { return d.i; }), 200);
{
auto wlk = data.writeLocked();
wlk->str = "Write locked";
}
QCOMPARE(data.readLocked()->str, "Write locked");
SynchronizedValue<QString> lockedStr("Hello World");
QCOMPARE(*lockedStr.readLocked(), "Hello World");
*lockedStr.writeLocked() = "Hello World 2";
QCOMPARE(*lockedStr.readLocked(), "Hello World 2");
}
void trivialGet()
{
SynchronizedValue<TestData> data(200);
TestData d = data.get();
QCOMPARE(data, d);
QCOMPARE(d.i, 200);
}
void equalop()
{
SynchronizedValue<TestData> data(200);
SynchronizedValue<TestData> data2(300);
data = data2;
QCOMPARE(data.get<int>([](const auto &d) { return d.i; }), 300);
QCOMPARE(data2.get<int>([](const auto &d) { return d.i; }), 300);
TestData dataNoLock(1337);
data = dataNoLock;
QCOMPARE(data.get<int>([](const auto &d) { return d.i; }), 1337);
}
void compareEq()
{
SynchronizedValue<TestData> data(200);
SynchronizedValue<TestData> data2(300);
QVERIFY(data != data2);
QVERIFY(!(data == data2));
data2.write([](auto &d) { d.i = 200; });
QVERIFY(data == data2);
QVERIFY(!(data != data2));
}
void operators()
{
SynchronizedValue<int> data(200);
SynchronizedValue<int> data2(300);
QVERIFY(data < data2);
QVERIFY(data <= data2);
QVERIFY(data2 > data);
QVERIFY(data2 >= data);
QVERIFY(data2 != data);
QVERIFY(!(data2 == data));
QVERIFY(data > 100);
QVERIFY(data >= 100);
QVERIFY(data >= 200);
QVERIFY(data < 300);
QVERIFY(data <= 300);
QVERIFY(100 < data);
QVERIFY(200 <= data);
QVERIFY(199 <= data);
QVERIFY(300 > data);
QVERIFY(200 >= data);
QVERIFY(201 >= data);
QVERIFY(200 == data);
QVERIFY(200 != data2);
}
void copyCtor()
{
SynchronizedValue<TestData> data(123);
SynchronizedValue<TestData> data2(data);
QCOMPARE(data.get<int>([](const auto &d) { return d.i; }), 123);
QCOMPARE(data2.get<int>([](const auto &d) { return d.i; }), 123);
TestData dataNoLock(1337);
SynchronizedValue<TestData> data3(dataNoLock);
QCOMPARE(data3.get<int>([](const auto &d) { return d.i; }), 1337);
}
void multilock()
{
SynchronizedValue<int> value(100);
// Multiple reader, no writer
{
QCOMPARE(value.get(), 100);
auto firstLock = value.readLocked();
QVERIFY(firstLock.ownsLock());
auto secondLock = value.readLocked();
QVERIFY(secondLock.ownsLock());
QCOMPARE(*firstLock, 100);
QCOMPARE(*secondLock, 100);
auto thirdLock = value.writeLocked(std::try_to_lock);
QVERIFY(!thirdLock.ownsLock());
}
// Single writer, no readers
{
auto firstLock = value.writeLocked();
QVERIFY(firstLock.ownsLock());
auto secondLock = value.writeLocked(std::try_to_lock);
QVERIFY(!secondLock.ownsLock());
auto readLock = value.readLocked(std::try_to_lock);
QVERIFY(!readLock.ownsLock());
}
}
void synchronizeMultiple()
{
SynchronizedValue<int> sv1;
SynchronizedValue<QString> sv2;
auto [lk1, lk2] = synchronize(sv1, sv2);
QVERIFY(lk1.ownsLock());
QVERIFY(lk2.ownsLock());
}
};
} // namespace Utils
QTEST_GUILESS_MAIN(Utils::tst_synchronizedvalue)
#include "tst_synchronizedvalue.moc"
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