diff --git a/src/helpers/heritage-integration/cookie-helper.spec.js b/src/helpers/heritage-integration/cookie-helper.spec.js
index 349b2206a..c5cbc5bee 100644
--- a/src/helpers/heritage-integration/cookie-helper.spec.js
+++ b/src/helpers/heritage-integration/cookie-helper.spec.js
@@ -7,6 +7,7 @@ import {
     regenerateDeviceId,
     getUserIdValue,
     regenerateUserId,
+    setSessionKeyIfUnset,
 } from "@/helpers/heritage-integration/cookie-helper.js";
 import { cookieNames } from "@/constants/cookie-names";
 import { removeAllTestCookies, setupCookies, setupCrypto } from "@/helpers/unit-test-helper";
@@ -234,15 +235,54 @@ describe("cookies", () => {
         });
     });
 
-    test("getSessionKeyValue, should return session key int", () => {
-        // Arrange
-        setupCookies({});
+    describe("Session Key", () => {
+        describe("getSessionKeyValue", () => {
+            test("Should return session key int", () => {
+                // Arrange
+                setupCookies({});
 
-        // Act
-        const result = getSessionKeyValue();
+                // Act
+                const result = getSessionKeyValue();
 
-        //Assert
-        expect(result).toBe("12345");
+                //Assert
+                expect(result).toBe("12345");
+            });
+
+            test("Should return 0 if unset", () => {
+                // Arrange
+
+                // Act
+                const result = getSessionKeyValue();
+
+                //Assert
+                expect(result).toBe(0);
+            });
+        });
+
+        describe("setSessionKeyIfUnset", () => {
+            test("Should set the cookie if not previously set", () => {
+                // Arrange
+
+                // Act
+                setSessionKeyIfUnset("54321");
+                const result = getSessionKeyValue();
+
+                // Assert
+                expect(result).toBe("54321");
+            });
+
+            test("Should not set the cookie if previously set", () => {
+                // Arrange
+                setupCookies({});
+
+                // Act
+                setSessionKeyIfUnset("54321");
+                const result = getSessionKeyValue();
+
+                // Assert
+                expect(result).toBe("12345");
+            });
+        });
     });
 
     describe("getSessionIdValue", () => {