QQmlProperty: handle reads of QQmlPropertyMap correctly

Fixes: QTBUG-79614
Change-Id: Iaf84c0178dc88072a367da2b42b09554b85c7d57
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>

1 files changed, 21 insertions, 0 deletions

diff --git a/tests/auto/qml/qqmlproperty/tst_qqmlproperty.cpp b/tests/auto/qml/qqmlproperty/tst_qqmlproperty.cpp
index 27e06c6f67..ed213cd01a 100644
--- a/tests/auto/qml/qqmlproperty/tst_qqmlproperty.cpp
+++ b/tests/auto/qml/qqmlproperty/tst_qqmlproperty.cpp
@@ -37,6 +37,7 @@
 #include <QtCore/qdir.h>
 #include <QtCore/private/qobject_p.h>
 #include "../../shared/util.h"
+#include <QtQml/QQmlPropertyMap>
 
 #include <QDebug>
 class MyQmlObject : public QObject
@@ -149,6 +150,8 @@ private slots:
     void floatToStringPrecision();
 
     void copy();
+
+    void nestedQQmlPropertyMap();
 private:
     QQmlEngine engine;
 };
@@ -2106,6 +2109,24 @@ void tst_qqmlproperty::initTestCase()
     qmlRegisterType<MyContainer>("Test",1,0,"MyContainer");
 }
 
+void tst_qqmlproperty::nestedQQmlPropertyMap()
+{
+    QQmlPropertyMap mainPropertyMap;
+    QQmlPropertyMap nestedPropertyMap;
+    QQmlPropertyMap deeplyNestedPropertyMap;
+
+    mainPropertyMap.insert("nesting1", QVariant::fromValue(&nestedPropertyMap));
+    nestedPropertyMap.insert("value", 42);
+    nestedPropertyMap.insert("nesting2", QVariant::fromValue(&deeplyNestedPropertyMap));
+    deeplyNestedPropertyMap.insert("value", "success");
+
+    QQmlProperty value{&mainPropertyMap, "nesting1.value"};
+    QCOMPARE(value.read().toInt(), 42);
+
+    QQmlProperty success{&mainPropertyMap, "nesting1.nesting2.value"};
+    QCOMPARE(success.read().toString(), QLatin1String("success"));
+}
+
 QTEST_MAIN(tst_qqmlproperty)
 
 #include "tst_qqmlproperty.moc"