Added useless unit test to get coverage

Author: andreilitvin

src/app/server-cluster/tests/TestDefaultServerCluster.cpp

@@ -85,6 +85,16 @@ TEST(TestDefaultServerCluster, TestFlagsDefault)
     ASSERT_EQ(cluster.GetClusterFlags().Raw(), 0u);
 }
 
+TEST(TestDefaultServerCluster, ListWriteNotification)
+{
+    FakeDefaultServerCluster cluster({ 1, 2 });
+
+    // this does not test anything really, except we get 100% coverage and we see that we do not crash
+    cluster.ListAttributeWriteNotification({1,2,3}, DataModel::ListWriteOperation::kListWriteBegin);
+    cluster.ListAttributeWriteNotification({1,2,3}, DataModel::ListWriteOperation::kListWriteFailure);
+}
+
+
 TEST(TestDefaultServerCluster, AttributesDefault)
 {
     FakeDefaultServerCluster cluster({ 1, 2 });