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// Copyright (C) 2022 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#include <QTest>
#include <QTestEventLoop>
#include <QtCore/QTimer>
using namespace std::chrono_literals;
// Tests for QTestEventLoop (and some QTRY_* details)
class tst_EventLoop: public QObject
{
Q_OBJECT
bool m_inTestFunction = false;
private slots:
void cleanup();
void fail();
void skip();
void pass();
};
class DeferredFlag : public QObject // Can't be const.
{
Q_OBJECT
bool m_flag;
public:
// A boolean that either starts out true or decays to true after 50 ms.
// However, that decay will only happen when the event loop is run.
explicit DeferredFlag(bool initial = false) : m_flag(initial)
{
if (!initial)
QTimer::singleShot(50, this, &DeferredFlag::onTimeOut);
}
explicit operator bool() const { return m_flag; }
bool operator!() const { return !m_flag; }
friend bool operator==(const DeferredFlag &a, const DeferredFlag &b)
{
return bool(a) == bool(b);
}
public slots:
void onTimeOut() { m_flag = true; }
};
char *toString(const DeferredFlag &val)
{
return qstrdup(bool(val) ? "DeferredFlag(true)" : "DeferredFlag(false)");
}
void tst_EventLoop::cleanup()
{
// QTBUG-104441: looping didn't happen in cleanup() if test failed or skipped.
{
DeferredFlag flag;
auto &loop = QTestEventLoop::instance();
loop.enterLoop(100ms);
QVERIFY2(loop.timeout(), "QTestEventLoop exited prematurely in cleanup()");
QVERIFY(flag);
}
{
DeferredFlag flag;
QTRY_VERIFY2(flag, "QTRY_* loop exited prematurely in cleanup()");
}
m_inTestFunction = false;
}
void tst_EventLoop::fail()
{
QVERIFY2(!std::exchange(m_inTestFunction, true), "Earlier test failed to clean up");
QFAIL("Failing test should still clean up");
}
void tst_EventLoop::skip()
{
QVERIFY2(!std::exchange(m_inTestFunction, true), "Earlier test failed to clean up");
QSKIP("Skipping test should still clean up");
}
void tst_EventLoop::pass()
{
QVERIFY2(!std::exchange(m_inTestFunction, true), "Earlier test failed to clean up");
{
DeferredFlag flag;
auto &loop = QTestEventLoop::instance();
loop.enterLoop(100ms);
QVERIFY(loop.timeout());
QVERIFY(flag);
}
{
DeferredFlag flag;
QTRY_VERIFY(flag);
}
DeferredFlag flag;
QTestEventLoop loop(this);
QVERIFY(!flag);
loop.enterLoop(1ms);
QVERIFY(loop.timeout());
QVERIFY(!flag);
loop.enterLoop(100ms);
QVERIFY(loop.timeout());
QVERIFY(flag);
}
QTEST_MAIN(tst_EventLoop)
#include "tst_eventloop.moc"
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