AUT-2602: Introduce new function for a timestamp n seconds from now

The backend returns a time to live for a lock in seconds, therefore this introduces a helper method for this.

src/utils/lock-helper.ts

@@ -2,6 +2,10 @@ export function timestampNMinutesFromNow(numberOfMinutes: number) {
   return new Date(Date.now() + numberOfMinutes * 60000).toUTCString();
 }
 
+export function timestampNSecondsFromNow(numberOfSeconds: number) {
+  return new Date(Date.now() + numberOfSeconds * 1000).toUTCString();
+}
+
 export function isLocked(maybeLockTimestamp?: string) {
   return (
     maybeLockTimestamp &&

test/unit/utils/lock-helper.test.ts

@@ -3,6 +3,7 @@ import { describe } from "mocha";
 import {
   isLocked,
   timestampNMinutesFromNow,
+  timestampNSecondsFromNow,
 } from "../../../src/utils/lock-helper";
 import sinon from "sinon";
 describe("lockout-helper", () => {
@@ -40,6 +41,27 @@ describe("lockout-helper", () => {
     });
   });
 
+  describe("timestampNSecondsFromNow", () => {
+    it("should return the correct timestamp from the current datetime", () => {
+      const TEST_SCENARIO_PARAMS = [
+        {
+          numberOfSeconds: 60,
+          expectedTimestamp: "Thu, 01 Feb 2024 00:01:00 GMT",
+        },
+        {
+          numberOfSeconds: 1,
+          expectedTimestamp: "Thu, 01 Feb 2024 00:00:01 GMT",
+        },
+      ];
+
+      TEST_SCENARIO_PARAMS.forEach((params) => {
+        expect(timestampNSecondsFromNow(params.numberOfSeconds)).to.eq(
+          params.expectedTimestamp
+        );
+      });
+    });
+  });
+
   describe("checkIfLocked", () => {
     it("should correctly determine if a user is locked", () => {
       const TEST_SCENARIO_PARAMS = [