2 files changed, 34 insertions, 0 deletions
diff --git a/tests/auto/qml/qqmlecmascript/data/qtbug_54589.qml b/tests/auto/qml/qqmlecmascript/data/qtbug_54589.qml
new file mode 100644
index 0000000000..8f7d5f2a70
--- /dev/null
+++ b/tests/auto/qml/qqmlecmascript/data/qtbug_54589.qml
@@ -0,0 +1,16 @@
+import QtQuick 2.0
+
+QtObject {
+    function checkPropertyDeletion() {
+        var o = {
+            x: 1,
+            y: 2
+        };
+        o.z = 3
+        delete o.y;
+
+        return (o.x === 1 && o.y === undefined && o.z === 3)
+    }
+
+    property bool result: checkPropertyDeletion()
+}
diff --git a/tests/auto/qml/qqmlecmascript/tst_qqmlecmascript.cpp b/tests/auto/qml/qqmlecmascript/tst_qqmlecmascript.cpp
index 07b5e55384..de3ead917f 100644
--- a/tests/auto/qml/qqmlecmascript/tst_qqmlecmascript.cpp
+++ b/tests/auto/qml/qqmlecmascript/tst_qqmlecmascript.cpp
@@ -324,6 +324,8 @@ private slots:
     void switchExpression();
     void qtbug_46022();
     void qtbug_52340();
+    void qtbug_54589();
+    void qtbug_54687();
 
 private:
 //    static void propertyVarWeakRefCallback(v8::Persistent<v8::Value> object, void* parameter);
@@ -7965,6 +7967,22 @@ void tst_qqmlecmascript::qtbug_52340()
     QVERIFY(returnValue.toBool());
 }
 
+void tst_qqmlecmascript::qtbug_54589()
+{
+    QQmlComponent component(&engine, testFileUrl("qtbug_54589.qml"));
+
+    QScopedPointer<QObject> obj(component.create());
+    QVERIFY(obj != 0);
+    QCOMPARE(obj->property("result").toBool(), true);
+}
+
+void tst_qqmlecmascript::qtbug_54687()
+{
+    QJSEngine e;
+    // it's simple: this shouldn't crash.
+    engine.evaluate("12\n----12");
+}
+
 QTEST_MAIN(tst_qqmlecmascript)
 
 #include "tst_qqmlecmascript.moc"