Fix FinderApp failing on mvn verify

Author: psaikkonen

src/main/java/javafxlibrary/testapps/FinderApp.java

@@ -6,11 +6,17 @@
 import javafx.scene.Scene;
 import javafx.stage.Stage;
 import javafx.stage.StageStyle;
+import org.testfx.api.FxToolkit;
 
 public class FinderApp extends Application {
 
     int scale = 200;
 
+    @Override
+    public void init() throws Exception {
+        FxToolkit.registerStage(() -> new Stage());
+    }
+
     @Override
     public void start(Stage firstStage) throws Exception {
         Stage secondStage = new Stage();