add tests

Author: pvaliani

src/app/components/ATIAnalytics/atiUrl/index.client.test.ts

@@ -257,6 +257,40 @@ describe('atiUrl', () => {
         });
       });
 
+      it('should include skip-rate fields when provided on itemTracker', () => {
+        const componentSpecificTrack = buildReverbEventModel({
+          ...input,
+          itemTracker: {
+            type: 'portrait-video',
+            text: 'Example title',
+            duration: 9000,
+            totalDuration: 12000,
+            completionRate: 0.75,
+            skipRate: 0.25,
+            navigationMethod: 'swipe',
+            exitReason: 'navigation',
+            versionId: 'p1234567',
+            resourceId: 'urn:bbc:pips:pid:p1234567',
+          },
+        });
+
+        expect(componentSpecificTrack.eventDetails.item).toEqual({
+          attribution: 'advertiserID',
+          duration: 9000,
+          exit_reason: 'navigation',
+          link: 'http://localhost',
+          name: 'top-stories',
+          navigation_method: 'swipe',
+          resource_id: 'urn:bbc:pips:pid:p1234567',
+          skip_rate: 0.25,
+          text: 'Example title',
+          total_duration: 12000,
+          type: 'portrait-video',
+          completion_rate: 0.75,
+          version_id: 'p1234567',
+        });
+      });
+
       it('should return the correct Reverb group event model', () => {
         const blockSpecificTrack = buildReverbEventModel({
           ...input,