Refactor : Moved to delay functionality to util

src/utils/guildRole.ts

@@ -21,6 +21,7 @@ import {
 } from "../typeDefinitions/discordMessage.types";
 import { GuildRole, Role } from "../typeDefinitions/role.types";
 import createDiscordHeaders from "./createDiscordHeaders";
+import { sleep } from "./sleep";
 
 export async function createGuildRole(
   body: createNewRole,
@@ -188,9 +189,7 @@ export async function mentionEachUserInMessage({
           console.error(`Failed to mention a user`);
         }
       });
-      await new Promise((resolve) =>
-        setTimeout(resolve, waitTillNextAPICall * 1000)
-      );
+      await sleep(waitTillNextAPICall * 1000);
       waitTillNextAPICall = 0;
     }
     if (failedUsers.length > 0) {

src/utils/sleep.ts

@@ -0,0 +1,5 @@
+export function sleep(delay = 1000) {
+  return new Promise((resolve) => {
+    setTimeout(resolve, delay);
+  });
+}

tests/unit/utils/sleep.test.ts

@@ -0,0 +1,18 @@
+import { sleep } from "../../../src/utils/sleep";
+jest.useFakeTimers();
+
+describe("sleep function", () => {
+  afterAll(() => jest.useRealTimers());
+  test("should resolve after the specified delay", async () => {
+    const delay = 2000;
+    const promise = sleep(delay);
+    jest.advanceTimersByTime(delay);
+    await expect(promise).resolves.toBeUndefined();
+  });
+
+  test("should resolve after default delay if no delay is provided", async () => {
+    const promise = sleep();
+    jest.advanceTimersByTime(1000);
+    await expect(promise).resolves.toBeUndefined();
+  });
+});