[MNT-21920] Fix Card View Integers initialization when they are set to 0 (#6320)

* [MNT-21920] Fix Card View Integers initialization when they are set to 0

* Add unit tests

lib/content-services/src/lib/content-metadata/components/content-metadata/content-metadata.component.ts

@@ -201,7 +201,7 @@ export class ContentMetadataComponent implements OnChanges, OnInit, OnDestroy {
 
     showGroup(group: CardViewGroup): boolean {
         const properties = group.properties.filter((property) => {
-            return !!property.displayValue;
+            return !this.isEmpty(property.displayValue);
         });
 
         return properties.length > 0;
@@ -225,4 +225,8 @@ export class ContentMetadataComponent implements OnChanges, OnInit, OnDestroy {
             event.stopPropagation();
         }
     }
+
+    private isEmpty(value: any): boolean {
+        return value === undefined || value === null || value === '';
+    }
 }

lib/content-services/src/lib/content-metadata/services/property-groups-translator.service.spec.ts

@@ -253,6 +253,17 @@ describe('PropertyGroupTranslatorService', () => {
             expect(cardViewProperty.value).toBe(1024);
         });
 
+        it('should translate properly the value attribute for d:int and value is 0', () => {
+            property.dataType = 'd:int';
+
+            propertyValues = { 'FAS:PLAGUE': 0 };
+            const cardViewGroup = service.translateToCardViewGroups(propertyGroups, propertyValues, null);
+
+            const cardViewProperty: CardViewIntItemModel = <CardViewIntItemModel> cardViewGroup[0].properties[0];
+            expect(cardViewProperty instanceof CardViewIntItemModel).toBeTruthy('Property should be instance of CardViewIntItemModel');
+            expect(cardViewProperty.value).toBe(0);
+        });
+
         it('should translate properly the value attribute for d:long', () => {
             property.dataType = 'd:long';
 
@@ -275,6 +286,17 @@ describe('PropertyGroupTranslatorService', () => {
             expect(cardViewProperty.value).toBe(1024.24);
         });
 
+        it('should translate properly the value attribute for d:float and value is 0', () => {
+            property.dataType = 'd:float';
+
+            propertyValues = { 'FAS:PLAGUE': 0 };
+            const cardViewGroup = service.translateToCardViewGroups(propertyGroups, propertyValues, null);
+
+            const cardViewProperty: CardViewFloatItemModel = <CardViewFloatItemModel> cardViewGroup[0].properties[0];
+            expect(cardViewProperty instanceof CardViewFloatItemModel).toBeTruthy('Property should be instance of CardViewFloatItemModel');
+            expect(cardViewProperty.value).toBe(0);
+        });
+
         it('should translate properly the value attribute for d:double', () => {
             property.dataType = 'd:double';
 

lib/content-services/src/lib/content-metadata/services/property-groups-translator.service.ts

@@ -77,7 +77,7 @@ export class PropertyGroupTranslatorService {
 
     private translate(property: Property, propertyValues: any, constraints: Constraint[]): CardViewItem {
         let propertyValue: any;
-        if (propertyValues && propertyValues[property.name]) {
+        if (propertyValues && !this.isEmpty(propertyValues[property.name])) {
             propertyValue = propertyValues[property.name];
         }
 
@@ -159,4 +159,8 @@ export class PropertyGroupTranslatorService {
             this.logService.error(`Unknown type for mapping: ${ecmPropertyType}`);
         }
     }
+
+    private isEmpty(value: any): boolean {
+        return value === undefined || value === null || value === '';
+    }
 }