1 files changed, 8 insertions, 0 deletions
diff --git a/tests/auto/gui/kernel/qpalette/tst_qpalette.cpp b/tests/auto/gui/kernel/qpalette/tst_qpalette.cpp
index f9b0792960..81036bee0a 100644
--- a/tests/auto/gui/kernel/qpalette/tst_qpalette.cpp
+++ b/tests/auto/gui/kernel/qpalette/tst_qpalette.cpp
@@ -274,6 +274,14 @@ void tst_QPalette::cacheKey()
     const auto defaultSerNo = defaultCacheKey >> 32;
     const auto defaultDetachNo = defaultCacheKey & 0xffffffff;
 
+    QPalette changeTwicePalette(defaultPalette);
+    changeTwicePalette.setBrush(QPalette::All, QPalette::ButtonText, Qt::red);
+    const auto firstChangeCacheKey = changeTwicePalette.cacheKey();
+    QCOMPARE_NE(firstChangeCacheKey, defaultCacheKey);
+    changeTwicePalette.setBrush(QPalette::All, QPalette::ButtonText, Qt::green);
+    const auto secondChangeCacheKey = changeTwicePalette.cacheKey();
+    QCOMPARE_NE(firstChangeCacheKey, secondChangeCacheKey);
+
     QPalette copyDifferentData(defaultPalette);
     QPalette copyDifferentMask(defaultPalette);
     QPalette copyDifferentMaskAndData(defaultPalette);