Fix paneldynamic getQuestions() method when panels count is 0.

src/visualizationPanelDynamic.ts

@@ -1,7 +1,7 @@
 import { VisualizerBase } from "./visualizerBase";
 import { VisualizationManager } from "./visualizationManager";
 import { VisualizationPanel } from "./visualizationPanel";
-import { Question, QuestionPanelDynamicModel } from "survey-core";
+import { Question, QuestionPanelDynamicModel, IQuestion } from "survey-core";
 
 export class VisualizationPanelDynamic extends VisualizerBase {
   constructor(
@@ -19,9 +19,9 @@ export class VisualizationPanelDynamic extends VisualizerBase {
     );
   }
 
-  getQuestions() {
+  getQuestions(): IQuestion[] {
     const paneldynamic: QuestionPanelDynamicModel = <any>this.question;
-    return paneldynamic.panels[0].questions;
+    return paneldynamic.template.questions;
   }
 
   render() {
@@ -32,7 +32,6 @@ export class VisualizationPanelDynamic extends VisualizerBase {
     );
     visPanel.render();
   }
-
 }
 
 VisualizationManager.registerVisualizer(

tests/visualizationPanelDynamic.test.ts

@@ -0,0 +1,34 @@
+import { SurveyModel, QuestionTextModel } from "survey-core";
+import { VisualizationPanelDynamic } from "../src/visualizationPanelDynamic";
+
+test("check paneldynamic visualization getQuestions() when panels count is 0", () => {
+  const json = {
+    elements: [
+      {
+        name: "question1",
+        type: "paneldynamic",
+        isRequired: true,
+        templateElements: [
+          {
+            type: "text",
+            name: "question2"
+          }
+        ]
+      }
+    ]
+  };
+  const data = [
+    {
+      question1: [{ question2: "testValue" }]
+    }
+  ];
+  const survey = new SurveyModel(json);
+  const question = survey.getAllQuestions()[0];
+  const viz = new VisualizationPanelDynamic(
+    document.createElement("div"),
+    <any>question,
+    data,
+    {}
+  );
+  expect(viz.getQuestions()).toBeTruthy();
+});