Fix some wrong tests in heightForWidth()

This aligns better with heightForWidth() as it is in 4.7.
However, I've left out the exact matching with stretch factors, (the
expectedWidth() function tried to deal with that) because it makes the
test less robust (relies on undocumented behaviour and floating point
number comparisions).

1 files changed, 18 insertions, 15 deletions

diff --git a/tests/auto/qgraphicsgridlayout/tst_qgraphicsgridlayout.cpp b/tests/auto/qgraphicsgridlayout/tst_qgraphicsgridlayout.cpp
index 7346221..0ec67f6 100644
--- a/tests/auto/qgraphicsgridlayout/tst_qgraphicsgridlayout.cpp
+++ b/tests/auto/qgraphicsgridlayout/tst_qgraphicsgridlayout.cpp
@@ -3060,25 +3060,24 @@ void tst_QGraphicsGridLayout::heightForWidth()
     layout->setSpacing(0);
     RectWidget *w00 = new RectWidget;
     w00->setSizeHint(Qt::MinimumSize, QSizeF(1,1));
-    w00->setSizeHint(Qt::PreferredSize, QSizeF(50,50));
+    w00->setSizeHint(Qt::PreferredSize, QSizeF(10,10));
     w00->setSizeHint(Qt::MaximumSize, QSizeF(100,100));
     layout->addItem(w00, 0, 0);
 
     RectWidget *w01 = new RectWidget;
     w01->setSizeHint(Qt::MinimumSize, QSizeF(1,1));
-    w01->setSizeHint(Qt::PreferredSize, QSizeF(50,50));
+    w01->setSizeHint(Qt::PreferredSize, QSizeF(10,10));
     w01->setSizeHint(Qt::MaximumSize, QSizeF(100,100));
     layout->addItem(w01, 0, 1);
 
     RectWidget *w10 = new RectWidget;
     w10->setSizeHint(Qt::MinimumSize, QSizeF(1,1));
-    w10->setSizeHint(Qt::PreferredSize, QSizeF(50,50));
+    w10->setSizeHint(Qt::PreferredSize, QSizeF(10,10));
     w10->setSizeHint(Qt::MaximumSize, QSizeF(100,100));
     layout->addItem(w10, 1, 0);
 
     RectWidget *w11 = new RectWidget;
     w11->setSizeHint(Qt::MinimumSize, QSizeF(1,1));
-    w11->setSizeHint(Qt::PreferredSize, QSizeF(50,400));
     w11->setSizeHint(Qt::MaximumSize, QSizeF(30000,30000));
     w11->setConstraintFunction(hfw);
     QSizePolicy sp(QSizePolicy::Preferred, QSizePolicy::Preferred);
@@ -3087,29 +3086,33 @@ void tst_QGraphicsGridLayout::heightForWidth()
     layout->addItem(w11, 1, 1);
 
     QCOMPARE(layout->effectiveSizeHint(Qt::MinimumSize, QSizeF(-1, -1)), QSizeF(2, 2));
-    QEXPECT_FAIL("", "QTBUG-14693", Continue);
     QCOMPARE(layout->effectiveSizeHint(Qt::PreferredSize, QSizeF(-1, -1)), QSizeF(210, 110));
     QCOMPARE(layout->effectiveSizeHint(Qt::MaximumSize, QSizeF(-1, -1)), QSizeF(30100, 30100));
 
     QCOMPARE(layout->effectiveSizeHint(Qt::MinimumSize, QSizeF(2, -1)), QSizeF(2, 20001));
-    QCOMPARE(layout->effectiveSizeHint(Qt::PreferredSize, QSizeF(2, -1)), QSizeF(2, 20050));
+    QCOMPARE(layout->effectiveSizeHint(Qt::PreferredSize, QSizeF(2, -1)), QSizeF(2, 20010));
     QCOMPARE(layout->effectiveSizeHint(Qt::MaximumSize, QSizeF(2, -1)), QSizeF(2, 20100));
 
-    QCOMPARE(layout->effectiveSizeHint(Qt::MinimumSize, QSizeF(20, -1)), QSizeF(20, 1 + 2000));
-    QCOMPARE(layout->effectiveSizeHint(Qt::PreferredSize, QSizeF(20, -1)), QSizeF(20, 50 + 2000));
-    QCOMPARE(layout->effectiveSizeHint(Qt::MaximumSize, QSizeF(20, -1)), QSizeF(20, 100 + 2000));
+    // Since 20 is somewhere between "minimum width hint" (2) and
+    // "preferred width hint" (210), it will try to do distribution by
+    // stretching them with different factors.
+    // Since column 1 has a "preferred width" of 200 it means that
+    // column 1 will be a bit wider than column 0. Thus it will also be a bit
+    // shorter than 2001, (the expected height if all columns had width=10)
+    QSizeF sh = layout->effectiveSizeHint(Qt::MinimumSize, QSizeF(20, -1));
+    // column 1 cannot be wider than 19, which means that it must be taller than 20000/19~=1052
+    QVERIFY(sh.height() < 2000 + 1 && sh.height() > 1052 + 1);
 
-    QCOMPARE(layout->effectiveSizeHint(Qt::MinimumSize, QSizeF(300, -1)), QSizeF(300, 1 + 100));
-    QCOMPARE(layout->effectiveSizeHint(Qt::PreferredSize, QSizeF(300, -1)), QSizeF(300, 50 + 100));
-    QCOMPARE(layout->effectiveSizeHint(Qt::MaximumSize, QSizeF(300, -1)), QSizeF(300, 100 + 100));
+    sh = layout->effectiveSizeHint(Qt::PreferredSize, QSizeF(20, -1));
+    QVERIFY(sh.height() < 2000 + 10 && sh.height() > 1052 + 10);
+
+    sh = layout->effectiveSizeHint(Qt::MaximumSize, QSizeF(20, -1));
+    QVERIFY(sh.height() < 2000 + 100 && sh.height() > 1052 + 100);
 
     // the height of the hfw widget is shorter than the one to the left, which is 100, so
     // the total height of the last row is 100 (which leaves the layout height to be 200)
     QCOMPARE(layout->effectiveSizeHint(Qt::MaximumSize, QSizeF(500, -1)), QSizeF(500, 100 + 100));
 
-    // hfw item size: (500, 40) -> preferred size is maxed up to preferred size of item w10 (50)
-    QCOMPARE(layout->effectiveSizeHint(Qt::PreferredSize, QSizeF(600, -1)), QSizeF(600, 50 + 50));
-
 }
 
 void tst_QGraphicsGridLayout::widthForHeight()