TestCase::mouseDrag: set mouse move delay >= 1 ms

Infinite-speed drags do not work well with velocity-sensitive
components like Flickable.  As with change d04982dc on qtbase,
adding a short delay helps to stabilize tests.

To keep it flexible, we make QTest::defaultMouseDelay()
available via the qtest_events.defaultMouseDelay property.
So the delay can be increased by passing a larger delay
value to mouseDrag, or by changing the QTEST_MOUSEEVENT_DELAY
environment variable (as before).

Task-number: QTBUG-55382
Change-Id: I8f8088758a206be104a439ee0d1832eeca574e8c
Reviewed-by: Liang Qi <liang.qi@qt.io>
Reviewed-by: Jan Arve Sæther <jan-arve.saether@theqtcompany.com>

1 files changed, 9 insertions, 4 deletions

diff --git a/src/qmltest/quicktestevent.cpp b/src/qmltest/quicktestevent.cpp
index cfa80c4f19..e71b4f8f54 100644
--- a/src/qmltest/quicktestevent.cpp
+++ b/src/qmltest/quicktestevent.cpp
@@ -39,6 +39,10 @@
 
 QT_BEGIN_NAMESPACE
 
+namespace QTest {
+    extern int Q_TESTLIB_EXPORT defaultMouseDelay();
+}
+
 QuickTestEvent::QuickTestEvent(QObject *parent)
     : QObject(parent)
 {
@@ -48,6 +52,11 @@ QuickTestEvent::~QuickTestEvent()
 {
 }
 
+int QuickTestEvent::defaultMouseDelay() const
+{
+    return QTest::defaultMouseDelay();
+}
+
 bool QuickTestEvent::keyPress(int key, int modifiers, int delay)
 {
     QWindow *window = activeWindow();
@@ -105,10 +114,6 @@ bool QuickTestEvent::keyClickChar(const QString &character, int modifiers, int d
     return true;
 }
 
-namespace QTest {
-    extern int Q_TESTLIB_EXPORT defaultMouseDelay();
-};
-
 namespace QtQuickTest
 {
     enum MouseAction { MousePress, MouseRelease, MouseClick, MouseDoubleClick, MouseMove, MouseDoubleClickSequence };