QGAL (Test): Add test to ensure persistency of user-defined spacing

Currently the user-defined spacing is saved inside "AnchorData->prefSize".
However this value may be modified if spacing is negative or if the
anchor's policy is "QSizePolicy::Ignored".

Signed-off-by: Eduardo M. Fleury <eduardo.fleury@openbossa.org>
Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@openbossa.org>

1 files changed, 26 insertions, 0 deletions

diff --git a/tests/auto/qgraphicsanchorlayout/tst_qgraphicsanchorlayout.cpp b/tests/auto/qgraphicsanchorlayout/tst_qgraphicsanchorlayout.cpp
index c7ed309..2ad024f 100644
--- a/tests/auto/qgraphicsanchorlayout/tst_qgraphicsanchorlayout.cpp
+++ b/tests/auto/qgraphicsanchorlayout/tst_qgraphicsanchorlayout.cpp
@@ -85,6 +85,7 @@ private slots:
     void simplificationVsOrder();
     void parallelSimplificationOfCenter();
     void simplificationVsRedundance();
+    void spacingPersistency();
 };
 
 class RectWidget : public QGraphicsWidget
@@ -1866,5 +1867,30 @@ void tst_QGraphicsAnchorLayout::simplificationVsRedundance()
     QCOMPARE(usedSimplex(l, Qt::Vertical), false);
 }
 
+/*
+  Avoid regression where the saved prefSize would be lost. This was
+  solved by saving the original spacing in the QGraphicsAnchorPrivate class
+*/
+void tst_QGraphicsAnchorLayout::spacingPersistency()
+{
+    QGraphicsWidget w;
+    QGraphicsWidget *a = createItem();
+    QGraphicsAnchorLayout *l = new QGraphicsAnchorLayout(&w);
+
+    l->addAnchors(l, a, Qt::Horizontal);
+    QGraphicsAnchor *anchor = l->anchor(l, Qt::AnchorLeft, a, Qt::AnchorLeft);
+
+    anchor->setSpacing(-30);
+    QCOMPARE(anchor->spacing(), -30.0);
+
+    anchor->setSpacing(30);
+    QCOMPARE(anchor->spacing(), 30.0);
+
+    anchor->setSizePolicy(QSizePolicy::Ignored);
+    w.effectiveSizeHint(Qt::PreferredSize);
+
+    QCOMPARE(anchor->spacing(), 30.0);
+}
+
 QTEST_MAIN(tst_QGraphicsAnchorLayout)
 #include "tst_qgraphicsanchorlayout.moc"