export functions and add unit tests

Author: rmi22186

src/Rokt-Kit.ts

@@ -462,11 +462,11 @@ function isString(value: unknown): value is string {
   return typeof value === 'string';
 }
 
-function isSelectPlacementsAttributePersistenceDenied(key: string): boolean {
+export function isSelectPlacementsAttributePersistenceDenied(key: string): boolean {
   return SELECT_PLACEMENTS_ATTRIBUTE_PERSISTENCE_DENY_SET.has(key.toLowerCase());
 }
 
-function removeSelectPlacementsAttributePersistenceDeniedAttributes(
+export function removeSelectPlacementsAttributePersistenceDeniedAttributes(
   attributes: Record<string, unknown> | null | undefined,
 ): Record<string, unknown> {
   const filteredAttributes: Record<string, unknown> = {};

test/src/tests.spec.ts

@@ -1,6 +1,10 @@
 import packageJson from '../../package.json';
 const packageVersion = packageJson.version;
 import '../../src/Rokt-Kit';
+import {
+  isSelectPlacementsAttributePersistenceDenied,
+  removeSelectPlacementsAttributePersistenceDeniedAttributes,
+} from '../../src/Rokt-Kit';
 import { Batch } from '@mparticle/web-sdk/internal';
 
 /* eslint-disable @typescript-eslint/no-explicit-any */
@@ -6107,6 +6111,50 @@ describe('Rokt Forwarder', () => {
     });
   });
 
+  describe('#isSelectPlacementsAttributePersistenceDenied', () => {
+    it('should identify denylisted attributes case-insensitively', () => {
+      expect(isSelectPlacementsAttributePersistenceDenied('confirmationref')).toBe(true);
+      expect(isSelectPlacementsAttributePersistenceDenied('confirmationRef')).toBe(true);
+      expect(isSelectPlacementsAttributePersistenceDenied('CONFIRMATIONREF')).toBe(true);
+      expect(isSelectPlacementsAttributePersistenceDenied('paymentServiceProvider')).toBe(true);
+      expect(isSelectPlacementsAttributePersistenceDenied('cartItems')).toBe(true);
+      expect(isSelectPlacementsAttributePersistenceDenied('conversionType')).toBe(true);
+    });
+
+    it('should return false for attributes that are not denylisted', () => {
+      expect(isSelectPlacementsAttributePersistenceDenied('loyaltyTier')).toBe(false);
+      expect(isSelectPlacementsAttributePersistenceDenied('favoriteStore')).toBe(false);
+    });
+  });
+
+  describe('#removeSelectPlacementsAttributePersistenceDeniedAttributes', () => {
+    it('should remove denylisted attributes case-insensitively', () => {
+      const attributes = {
+        confirmationRef: 'previous-order',
+        PaymentServiceProvider: 'test-provider',
+        cartItems: [{ sku: 'test-sku' }],
+        conversionType: 'purchase',
+        loyaltyTier: 'gold',
+      };
+
+      expect(removeSelectPlacementsAttributePersistenceDeniedAttributes(attributes)).toEqual({
+        loyaltyTier: 'gold',
+      });
+      expect(attributes).toEqual({
+        confirmationRef: 'previous-order',
+        PaymentServiceProvider: 'test-provider',
+        cartItems: [{ sku: 'test-sku' }],
+        conversionType: 'purchase',
+        loyaltyTier: 'gold',
+      });
+    });
+
+    it('should return an empty object for null or undefined attributes', () => {
+      expect(removeSelectPlacementsAttributePersistenceDeniedAttributes(null)).toEqual({});
+      expect(removeSelectPlacementsAttributePersistenceDeniedAttributes(undefined)).toEqual({});
+    });
+  });
+
   describe('#hashEventMessage', () => {
     it('should hash event message using generateHash in the proper order', () => {
       const eventName = 'Test Event';