Interactive forms: unit test for radio buttons without a field value

test/unit/annotation_spec.js

@@ -988,7 +988,7 @@ describe('annotation', function() {
       expect(data.radioButton).toEqual(false);
     });
 
-    it('should handle radio buttons', function() {
+    it('should handle radio buttons with a field value', function() {
       var parentDict = new Dict();
       parentDict.set('V', Name.get('1'));
 
@@ -1017,6 +1017,32 @@ describe('annotation', function() {
       expect(data.fieldValue).toEqual('1');
       expect(data.buttonValue).toEqual('2');
     });
+
+    it('should handle radio buttons without a field value', function() {
+      var normalAppearanceStateDict = new Dict();
+      normalAppearanceStateDict.set('2', null);
+
+      var appearanceStatesDict = new Dict();
+      appearanceStatesDict.set('N', normalAppearanceStateDict);
+
+      buttonWidgetDict.set('Ff', AnnotationFieldFlag.RADIO);
+      buttonWidgetDict.set('AP', appearanceStatesDict);
+
+      var buttonWidgetRef = new Ref(124, 0);
+      var xref = new XRefMock([
+        { ref: buttonWidgetRef, data: buttonWidgetDict, }
+      ]);
+
+      var annotation = annotationFactory.create(xref, buttonWidgetRef,
+                                                pdfManagerMock, idFactoryMock);
+      var data = annotation.data;
+      expect(data.annotationType).toEqual(AnnotationType.WIDGET);
+
+      expect(data.checkBox).toEqual(false);
+      expect(data.radioButton).toEqual(true);
+      expect(data.fieldValue).toEqual(null);
+      expect(data.buttonValue).toEqual('2');
+    });
   });
 
   describe('ChoiceWidgetAnnotation', function() {