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39
40#ifndef QTESTEVENTLOOP_H
41#define QTESTEVENTLOOP_H
42
43#include <QtTest/qttestglobal.h>
44
45#include <QtCore/qcoreapplication.h>
46#include <QtCore/qeventloop.h>
47#include <QtCore/qobject.h>
48#include <QtCore/qpointer.h>
49#include <QtCore/qthread.h>
50
51QT_BEGIN_NAMESPACE
52
53
54class Q_TESTLIB_EXPORT QTestEventLoop : public QObject
55{
56 Q_OBJECT
57
58public:
59 using QObject::QObject;
60
61 inline void enterLoopMSecs(int ms);
62 inline void enterLoop(int secs) { enterLoopMSecs(ms: secs * 1000); }
63
64 inline void changeInterval(int secs)
65 { killTimer(id: timerId); timerId = startTimer(interval: secs * 1000); }
66
67 inline bool timeout() const
68 { return _timeout; }
69
70 inline static QTestEventLoop &instance()
71 {
72 static QPointer<QTestEventLoop> testLoop;
73 if (testLoop.isNull())
74 testLoop = new QTestEventLoop(QCoreApplication::instance());
75 return *static_cast<QTestEventLoop *>(testLoop);
76 }
77
78public Q_SLOTS:
79 inline void exitLoop();
80
81protected:
82 inline void timerEvent(QTimerEvent *e) override;
83
84private:
85 Q_DECL_UNUSED_MEMBER bool inLoop; // ### Qt 6: remove
86 bool _timeout = false;
87 int timerId = -1;
88
89 QEventLoop *loop = nullptr;
90};
91
92inline void QTestEventLoop::enterLoopMSecs(int ms)
93{
94 Q_ASSERT(!loop);
95
96 QEventLoop l;
97
98 _timeout = false;
99
100 timerId = startTimer(interval: ms);
101
102 loop = &l;
103 l.exec();
104 loop = nullptr;
105}
106
107inline void QTestEventLoop::exitLoop()
108{
109 if (thread() != QThread::currentThread())
110 {
111 QMetaObject::invokeMethod(obj: this, member: "exitLoop", type: Qt::QueuedConnection);
112 return;
113 }
114
115 if (timerId != -1)
116 killTimer(id: timerId);
117 timerId = -1;
118
119 if (loop)
120 loop->exit();
121}
122
123inline void QTestEventLoop::timerEvent(QTimerEvent *e)
124{
125 if (e->timerId() != timerId)
126 return;
127 _timeout = true;
128 exitLoop();
129}
130
131QT_END_NAMESPACE
132
133#endif
134

source code of qtbase/src/testlib/qtesteventloop.h