DB Helper Issue

Hi , I am quite new about CodeceptJS. I am trying to connect my database to run some queries before my API calls. I added my configuration codecept.conf.js file ;
DbHelper: {
“require”: “./node_modules/codeceptjs-dbhelper”

  • I am using these versions of codeceptJS - this is my package.json file ;
    “devDependencies”: {
    “codeceptjs”: “^3.5.12”,
    “codeceptjs-dbhelper”: “^1.2.2”,
    “database-js-mssql”: “^0.3.0”,
    “database-js-mysql”: “^1.1.3”,
    “mysql”: “^2.18.1”,
  • "dependencies": {
      "form-data": "^4.0.0",
      "knex": "^3.1.0",
      "mysql2": "^3.9.0",
      "node-fetch": "^3.3.2"
    Here is my code ;
    const { I, DB } = require(“…/helpers/DB.js”);

// BeforeSuite hook for connecting to the database
BeforeSuite(async ({ I }) => {
console.log(“BeforeSuite hook: Connecting to the database”);
const dbConfig = {
host: “host”,
user: “user”,
password: “password”,
database: “devDB”,
port: 6033,

// Connects to the database
try {
} catch (error) {
console.error(“Error connecting to the database:”, error.message);
// AfterSuite hook for disconnecting from the database
AfterSuite(async ({ I }) => {
console.log(“Executing AfterSuite hook”);
console.log(“I object:”, I); // Log the I object
// … rest of the code
await I.removeConnection(“testdb”);

// Before hook for executing a query before each test scenario
Before(async ({ I }) => {
console.log(“Before hook: Executing the query before each test scenario”);
// This Before hook will execute the query only once before the first scenario
if (!I._queryExecuted) {
try {
// Run the SQL query
const result = await I.run(
“SELECT productID FROM table WHERE id = xxx”

  // Log the result
  console.log("Query Result:", result);

  // If there are multiple rows, log each row
  for (const row of result) {
    console.log("External ID:", row.productID);

  // Set a flag to indicate that the query has been executed
  I._queryExecuted = true;
} catch (error) {
  console.error("Error executing the query:", error.message);


Feature(“DB TEST”);

Scenario(“should connect to the database and perform a query”, async () => {
try {
// Connect to the database
await DB.connect();

// Perform a query
const results = await DB.query(
  "SELECT productID FROM table WHERE id = xxx"

// Disconnect from the database
await DB.disconnect();

// Perform assertions or other actions using CodeceptJS methods

} catch (error) {
console.error(“Error connecting to the database:”, error.message);

(I changed sensitive data in the code ) and getting this error ;

TypeError: Cannot read properties of undefined (reading ‘unshift’)
at context.AfterSuite (C:\Users\Documents\workspace\vx-codeceptjs-bankingProxy\node_modules\codeceptjs\lib\ui.js:146:21)
at Object. (C:\Users\Documents\workspace\vx-codeceptjs-bankingProxy\tests\DBtest.js:25:1)
at Module._compile (node:internal/modules/cjs/loader:1254:14)
at Module._extensions…js (node:internal/modules/cjs/loader:1308:10)
at Module.load (node:internal/modules/cjs/loader:1117:32)
at Module._load (node:internal/modules/cjs/loader:958:12)
at Module.require (node:internal/modules/cjs/loader:1141:19)
at require (node:internal/modules/cjs/helpers:110:18)
at Array.forEach ()

Cannot read properties of undefined (reading ‘unshift’)

Does anyone has idea , what should I do? can someone please help me about it ?


Should I create helper folder ?

Well, I guess there are some mistakes we could sort them out

  • first, the configuration, you try this, as that lib is installed via npm already.

“DbHelper”: {
“require”: “codeceptjs-dbhelper”

  • second, you can call them from I actor as Now the object I (of your callbacks) has new methods.

This line is not needed const { I, DB } = require(“…/helpers/DB.js”);