refactor: Move sleep function to seprate file

test/helpers/api-integration/v3/index.js

@@ -8,11 +8,4 @@ export { requester };
 export { translate } from '../translate';
 export { checkExistence, resetHabiticaDB } from '../../mongo';
 export * from  './object-generators';
-
-export async function sleep (seconds) {
-  let milliseconds = seconds * 1000;
-
-  return new Promise((resolve) => {
-    setTimeout(resolve, milliseconds);
-  });
-}
+export { sleep } from '../../sleep';

test/helpers/api-unit.helper.js

@@ -10,6 +10,8 @@ afterEach((done) => {
   mongoose.connection.db.dropDatabase(done);
 });
 
+export { sleep } from './sleep';
+
 export function generateUser (options = {}) {
   return new User(options).toObject();
 }

test/helpers/sleep.js

@@ -0,0 +1,7 @@
+export async function sleep (seconds) {
+  let milliseconds = seconds * 1000;
+
+  return new Promise((resolve) => {
+    setTimeout(resolve, milliseconds);
+  });
+}