1 files changed, 19 insertions, 3 deletions
diff --git a/tests/auto/widgets/widgets/qspinbox/tst_qspinbox.cpp b/tests/auto/widgets/widgets/qspinbox/tst_qspinbox.cpp
index 1d106f94f3..52d7dad7cf 100644
--- a/tests/auto/widgets/widgets/qspinbox/tst_qspinbox.cpp
+++ b/tests/auto/widgets/widgets/qspinbox/tst_qspinbox.cpp
@@ -461,17 +461,33 @@ void tst_QSpinBox::setPrefixSuffix()
     QFETCH(QString, expectedCleanText);
     QFETCH(bool, show);
 
-    QSpinBox spin(0);
+    QSpinBox spin;
+    if (show) {
+        spin.show();
+        spin.setPrefix(QString());  // trigger a recalc of sizeHint
+    }
+    const QSize size1 = spin.sizeHint();
     spin.setPrefix(prefix);
+    const QSize size2 = spin.sizeHint();
     spin.setSuffix(suffix);
+    const QSize size3 = spin.sizeHint();
     spin.setValue(value);
-    if (show)
-        spin.show();
 
     QCOMPARE(spin.prefix(), prefix);
     QCOMPARE(spin.suffix(), suffix);
     QCOMPARE(spin.text(), expectedText);
     QCOMPARE(spin.cleanText(), expectedCleanText);
+
+    if (!suffix.isEmpty()) {
+        QVERIFY(size2.width() < size3.width());
+        spin.setSuffix(QString());
+        QCOMPARE(spin.sizeHint(), size2);
+    }
+    if (!prefix.isEmpty()) {
+        QVERIFY(size1.width() < size2.width());
+        spin.setPrefix(QString());
+        QCOMPARE(spin.sizeHint(), size1);
+    }
 }
 
 void tst_QSpinBox::valueChangedHelper(const QString &text)