QEasyingCurve: fix data stream operators

Until now, QEasingCurve was not streaming all it's internal state.
Therefore, doing store/reload operation through QDataStream would not
yield the same curve as the original. This patch fixes it.

[ChangeLog][QtCore][QEasingCurve] QEasingCurve now properly streams all
the data needed to QDataStream.

Change-Id: I1619501f5b4237983c8c68e148745a5e58863f55
Fixes: QTBUG-68181
Reviewed-by: Jan Arve Sæther <jan-arve.saether@qt.io>

1 files changed, 33 insertions, 0 deletions

diff --git a/tests/auto/corelib/tools/qeasingcurve/tst_qeasingcurve.cpp b/tests/auto/corelib/tools/qeasingcurve/tst_qeasingcurve.cpp
index 0196dd2d23..c21d0afacb 100644
--- a/tests/auto/corelib/tools/qeasingcurve/tst_qeasingcurve.cpp
+++ b/tests/auto/corelib/tools/qeasingcurve/tst_qeasingcurve.cpp
@@ -55,6 +55,8 @@ private slots:
     void testCbrtFloat();
     void cpp11();
     void quadraticEquation();
+    void streamInOut_data();
+    void streamInOut();
 };
 
 void tst_QEasingCurve::type()
@@ -879,5 +881,36 @@ void tst_QEasingCurve::quadraticEquation() {
     }
 }
 
+void tst_QEasingCurve::streamInOut_data()
+{
+    QTest::addColumn<int>("version");
+    QTest::addColumn<bool>("equality");
+
+    QTest::newRow("5.11") << int(QDataStream::Qt_5_11) << false;
+    QTest::newRow("5.13") << int(QDataStream::Qt_5_13) << true;
+}
+
+void tst_QEasingCurve::streamInOut()
+{
+    QFETCH(int, version);
+    QFETCH(bool, equality);
+
+    QEasingCurve orig;
+    orig.addCubicBezierSegment(QPointF(0.43, 0.0025), QPointF(0.38, 0.51), QPointF(0.57, 0.99));
+
+    QEasingCurve copy;
+
+    QByteArray data;
+    QDataStream dsw(&data,QIODevice::WriteOnly);
+    QDataStream dsr(&data,QIODevice::ReadOnly);
+
+    dsw.setVersion(version);
+    dsr.setVersion(version);
+    dsw << orig;
+    dsr >> copy;
+
+    QCOMPARE(copy == orig, equality);
+}
+
 QTEST_MAIN(tst_QEasingCurve)
 #include "tst_qeasingcurve.moc"