Allow null to be assigned to object properties

3 files changed, 50 insertions, 0 deletions

diff --git a/tests/auto/declarative/qdeclarativeecmascript/data/canAssignNullToQObject.1.qml b/tests/auto/declarative/qdeclarativeecmascript/data/canAssignNullToQObject.1.qml
new file mode 100644
index 0000000..3fd9131
--- /dev/null
+++ b/tests/auto/declarative/qdeclarativeecmascript/data/canAssignNullToQObject.1.qml
@@ -0,0 +1,9 @@
+import Qt.test 1.0
+
+MyQmlObject {
+    property bool runTest: false
+
+    property variant a: MyQmlObject {}
+
+    objectProperty: (runTest == false)?a:null
+}
diff --git a/tests/auto/declarative/qdeclarativeecmascript/data/canAssignNullToQObject.2.qml b/tests/auto/declarative/qdeclarativeecmascript/data/canAssignNullToQObject.2.qml
new file mode 100644
index 0000000..19b0c42
--- /dev/null
+++ b/tests/auto/declarative/qdeclarativeecmascript/data/canAssignNullToQObject.2.qml
@@ -0,0 +1,11 @@
+import Qt.test 1.0
+import Qt 4.6
+
+MyQmlObject {
+    objectProperty: MyQmlObject {}
+
+    Component.onCompleted: {
+        objectProperty = null;
+    }
+}
+
diff --git a/tests/auto/declarative/qdeclarativeecmascript/tst_qdeclarativeecmascript.cpp b/tests/auto/declarative/qdeclarativeecmascript/tst_qdeclarativeecmascript.cpp
index a2ecf74..6939290 100644
--- a/tests/auto/declarative/qdeclarativeecmascript/tst_qdeclarativeecmascript.cpp
+++ b/tests/auto/declarative/qdeclarativeecmascript/tst_qdeclarativeecmascript.cpp
@@ -141,6 +141,7 @@ private slots:
     void variantsAssignedUndefined();
     void qtbug_9792();
     void noSpuriousWarningsAtShutdown();
+    void canAssignNullToQObject();
 
     void callQtInvokables();
 private:
@@ -2190,6 +2191,35 @@ void tst_qdeclarativeecmascript::noSpuriousWarningsAtShutdown()
     }
 }
 
+void tst_qdeclarativeecmascript::canAssignNullToQObject()
+{
+    {
+    QDeclarativeComponent component(&engine, TEST_FILE("canAssignNullToQObject.1.qml"));
+
+    MyQmlObject *o = qobject_cast<MyQmlObject *>(component.create());
+    QVERIFY(o != 0);
+
+    QVERIFY(o->objectProperty() != 0);
+
+    o->setProperty("runTest", true);
+
+    QVERIFY(o->objectProperty() == 0);
+
+    delete o;
+    }
+
+    {
+    QDeclarativeComponent component(&engine, TEST_FILE("canAssignNullToQObject.2.qml"));
+
+    MyQmlObject *o = qobject_cast<MyQmlObject *>(component.create());
+    QVERIFY(o != 0);
+
+    QVERIFY(o->objectProperty() == 0);
+
+    delete o;
+    }
+}
+
 QTEST_MAIN(tst_qdeclarativeecmascript)
 
 #include "tst_qdeclarativeecmascript.moc"