Hi I'm trying to connect to my MySQL db via sequelize but to no avail..
The connection data I giving is 100% correct and I can connect to my MySQL db via phpmyadmin.
Here is my code:
var Sequelize = require('sequelize-mysql').sequelize;
var dbConnector = function()
{
var sequelize = new Sequelize
(
'dbname',
'userName',
'password',
{
host: "ip",
port: port,
dialect: 'mysql'
}
);
var getCoutries = function ()
{
sequelize.query("SELECT * FROM `Country`")
.success
(
function(myTableRows)
{
console.log(myTableRows)
}
)
.error
(
function(error)
{
console.log(error);
// geting an error:
//[Error: connect ECONNREFUSED]
//code: 'ECONNREFUSED',
//errno: 'ECONNREFUSED',
//syscall: 'connect',
//fatal: true }
}
)
;
}
getCoutries();
};
var Sequelize = require('sequelize').Sequelize;
var dbConnector = function () {
const DB_NAME = 'DB_Name'
const DB_USER = 'root'
const DB_PASSWORD = ''
var sequelize = new Sequelize(DB_NAME, DB_USER, DB_PASSWORD,
{
host: "127.0.0.1",
port: 3306,
dialect: 'mysql'
}
);
var getCoutries = function () {
sequelize.query("SELECT * FROM `processor`").then(myTableRows => {
console.log(myTableRows)
}).catch(err => {
console.log(err)
})
}
getCoutries();
};
dbConnector()
"mysql2": "^2.2.5",
"sequelize": "^6.5.0",
Related
I get an error when running the integration tests:
0 passing (17s)
1 failure
1) Registration page
register new users allowed and update status in the database:
TypeError: Net.connect is not a function
at new Connection (webpack:///./node_modules/mysql2/lib/connection.js:50:0)
at ./node_modules/mysql2/index.js.exports.createConnection (webpack:///./node_modules/mysql2/index.js:10:0)
at Context.eval (webpack:///./cypress/integration/registration.spec.js:23:34)
Here is my environment:
MySQL Workbench
MySQL Server 8.0.29
I raised local backendless, I have access to the database. Here is my code:
const mysql2 = require('mysql2');
describe('Registration page', () => {
beforeEach(() => {
// visit the registration page
cy.visit('http://localhost:3000/registration');
});
it('register new users allowed and update status in the database', () => {
// fill out the registration form
cy.get('input[name="fullName"]').type("Nazar Dmytryshyn")
cy.get('input[type="email"]').type('testuser#example.com');
cy.get('input[name="pwd"]').type('testpassword');
cy.get('input[name="confirmPassword"]').type('testpassword');
// submit the form
cy.get('button[class="btn btn-success"]').click();
// check that the user is redirected to the login page
cy.url().should('include', '/login');
// create a connection to the test database
const connection = mysql2.createConnection({
host: '127.0.0.1:3306',
user: 'root',
password: 'rootpassword',
database: 'local1'
});
// open the connection
connection.connect();
// update the developer status in the database
connection.query(
'UPDATE `main_backendless`.`Developer` SET `developerStatusId` = "1" WHERE (`email` = "testuser#example.com")',
(error, results) => {
if (error) throw error;
expect(results.affectedRows).to.equal(1);
}
);
// close the connection
connection.end();
});
});
I checked this data 10 times, it is correct and I can connect to the database through MySQL WorkBench
host: '127.0.0.1:3306',
user: 'root',
password: 'rootpassword',
database: 'main_backendless'
I will be grateful for any ideas that can be achieved!
I recommend using the cypress-mysql, which hides a lot of the implementation details for you.
If you try to roll your own task, you may end up with an undefined return value.
Install
npm install cypress-mysql
//or
yarn add cypress-mysql
Configure
The release notes are out of date, here is the configuration for Cypress 10+
// cypress.config.js
const { defineConfig } = require("cypress");
const mysql = require('cypress-mysql');
module.exports = defineConfig({
// ...
e2e: {
setupNodeEvents(on, config) {
mysql.configurePlugin(on);
},
"env": {
"db": {
"host": "localhost",
"user": "user",
"password": "password",
"database": "database"
}
}
})
// cypress/support/e2e.js
const mysql = require('cypress-mysql');
mysql.addCommands();
Test
const sql = 'UPDATE "main_backendless.Developer" SET "developerStatusId" = "1" WHERE ("email" = "testuser#example.com")'
cy.query(sql).then(res => {
expect(res.affectedRows).to.equal(1)
});
If you want to use a task to call the mySql library, you must return a Promise from the task.
This is because the mysql calls are asynchronous, and the only way Cypress knows to wait for them is to get a promise returned from your code.
cypress.config.js
const { defineConfig } = require("cypress")
const mysql2 = require('mysql2')
const connection = mysql2.createConnection({
host: '127.0.0.1:3306',
user: 'root',
password: 'rootpassword',
database: 'local1'
})
module.exports = defineConfig({
e2e: {
setupNodeEvents(on, config) {
on('task', {
mySql: (sql) => {
return new Promise((resolve, reject) => {
connection.query(sql, (error, results) => {
if (error) {
reject(error)
} else {
resolve(results.affectedRows)
})
})
})
}
})
},
})
it('tests with mysql', () => {
cy.task('mySql', 'sql staement here')
.then(result => {
expect(result).to.equal(1);
})
})
With Promise-wrapper
Alternatively, mysql2 provides a promise-wrapper that can simplify your code:
const { defineConfig } = require("cypress")
const mysql = require('mysql2/promise') // different import here
const connection = mysql2.createConnection({
host: '127.0.0.1:3306',
user: 'root',
password: 'rootpassword',
database: 'local1'
})
module.exports = defineConfig({
e2e: {
setupNodeEvents(on, config) {
on('task', {
mySql: async (sql) => { // async here
const result = await connection.execute(sql) // await here
return result;
}
})
},
})
The issue is that you're using a nodejs library with Cypress. Cypress tests execute inside a browser and cannot directly utilize nodejs libraries within a test.
To do what you want to need to create a cy.task() to be able to execute code in nodejs.
Assuming you're using js, create a file with a function to use the sql connector
// runSql.js
const mysql2 = require('mysql2');
function runSql(sql) {
const connection = mysql2.createConnection({
host: '127.0.0.1:3306',
user: 'root',
password: 'rootpassword',
database: 'local1'
});
connection.connect();
let rows;
connection.query(sql, (error, results) => {
if (error) throw error;
rows = results.affectedRows
});
connection.end();
return rows;
}
module.exports = runSql;
Then in the cypress.config.js file
const runSql = require('./runSql.js');
module.exports = defineConfig({
// ...
e2e: {
setupNodeEvents(on, config) {
on('task', {
runSql
});
},
});
Now to call the task in a test
describe('Registration page', () => {
it('test', () => {
const sql = 'UPDATE `main_backendless`.`Developer` SET `developerStatusId` = "1" WHERE (`email` = "testuser#example.com")';
cy.task('runSql', sql).then((rows) => {
expect(rows).to.equal(1);
});
});
});
I get an error when running the integration tests:
0 passing (17s)
1 failure
1) Registration page
register new users allowed and update status in the database:
TypeError: Net.connect is not a function
at new Connection (webpack:///./node_modules/mysql2/lib/connection.js:50:0)
at ./node_modules/mysql2/index.js.exports.createConnection (webpack:///./node_modules/mysql2/index.js:10:0)
at Context.eval (webpack:///./cypress/integration/registration.spec.js:23:34)
Here is my environment:
MySQL Workbench
MySQL Server 8.0.29
I raised local backendless, I have access to the database. Here is my code:
const mysql2 = require('mysql2');
describe('Registration page', () => {
beforeEach(() => {
// visit the registration page
cy.visit('http://localhost:3000/registration');
});
it('register new users allowed and update status in the database', () => {
// fill out the registration form
cy.get('input[name="fullName"]').type("Nazar Dmytryshyn")
cy.get('input[type="email"]').type('testuser#example.com');
cy.get('input[name="pwd"]').type('testpassword');
cy.get('input[name="confirmPassword"]').type('testpassword');
// submit the form
cy.get('button[class="btn btn-success"]').click();
// check that the user is redirected to the login page
cy.url().should('include', '/login');
// create a connection to the test database
const connection = mysql2.createConnection({
host: '127.0.0.1:3306',
user: 'root',
password: 'rootpassword',
database: 'local1'
});
// open the connection
connection.connect();
// update the developer status in the database
connection.query(
'UPDATE `main_backendless`.`Developer` SET `developerStatusId` = "1" WHERE (`email` = "testuser#example.com")',
(error, results) => {
if (error) throw error;
expect(results.affectedRows).to.equal(1);
}
);
// close the connection
connection.end();
});
});
I checked this data 10 times, it is correct and I can connect to the database through MySQL WorkBench
host: '127.0.0.1:3306',
user: 'root',
password: 'rootpassword',
database: 'main_backendless'
I will be grateful for any ideas that can be achieved!
I recommend using the cypress-mysql, which hides a lot of the implementation details for you.
If you try to roll your own task, you may end up with an undefined return value.
Install
npm install cypress-mysql
//or
yarn add cypress-mysql
Configure
The release notes are out of date, here is the configuration for Cypress 10+
// cypress.config.js
const { defineConfig } = require("cypress");
const mysql = require('cypress-mysql');
module.exports = defineConfig({
// ...
e2e: {
setupNodeEvents(on, config) {
mysql.configurePlugin(on);
},
"env": {
"db": {
"host": "localhost",
"user": "user",
"password": "password",
"database": "database"
}
}
})
// cypress/support/e2e.js
const mysql = require('cypress-mysql');
mysql.addCommands();
Test
const sql = 'UPDATE "main_backendless.Developer" SET "developerStatusId" = "1" WHERE ("email" = "testuser#example.com")'
cy.query(sql).then(res => {
expect(res.affectedRows).to.equal(1)
});
If you want to use a task to call the mySql library, you must return a Promise from the task.
This is because the mysql calls are asynchronous, and the only way Cypress knows to wait for them is to get a promise returned from your code.
cypress.config.js
const { defineConfig } = require("cypress")
const mysql2 = require('mysql2')
const connection = mysql2.createConnection({
host: '127.0.0.1:3306',
user: 'root',
password: 'rootpassword',
database: 'local1'
})
module.exports = defineConfig({
e2e: {
setupNodeEvents(on, config) {
on('task', {
mySql: (sql) => {
return new Promise((resolve, reject) => {
connection.query(sql, (error, results) => {
if (error) {
reject(error)
} else {
resolve(results.affectedRows)
})
})
})
}
})
},
})
it('tests with mysql', () => {
cy.task('mySql', 'sql staement here')
.then(result => {
expect(result).to.equal(1);
})
})
With Promise-wrapper
Alternatively, mysql2 provides a promise-wrapper that can simplify your code:
const { defineConfig } = require("cypress")
const mysql = require('mysql2/promise') // different import here
const connection = mysql2.createConnection({
host: '127.0.0.1:3306',
user: 'root',
password: 'rootpassword',
database: 'local1'
})
module.exports = defineConfig({
e2e: {
setupNodeEvents(on, config) {
on('task', {
mySql: async (sql) => { // async here
const result = await connection.execute(sql) // await here
return result;
}
})
},
})
The issue is that you're using a nodejs library with Cypress. Cypress tests execute inside a browser and cannot directly utilize nodejs libraries within a test.
To do what you want to need to create a cy.task() to be able to execute code in nodejs.
Assuming you're using js, create a file with a function to use the sql connector
// runSql.js
const mysql2 = require('mysql2');
function runSql(sql) {
const connection = mysql2.createConnection({
host: '127.0.0.1:3306',
user: 'root',
password: 'rootpassword',
database: 'local1'
});
connection.connect();
let rows;
connection.query(sql, (error, results) => {
if (error) throw error;
rows = results.affectedRows
});
connection.end();
return rows;
}
module.exports = runSql;
Then in the cypress.config.js file
const runSql = require('./runSql.js');
module.exports = defineConfig({
// ...
e2e: {
setupNodeEvents(on, config) {
on('task', {
runSql
});
},
});
Now to call the task in a test
describe('Registration page', () => {
it('test', () => {
const sql = 'UPDATE `main_backendless`.`Developer` SET `developerStatusId` = "1" WHERE (`email` = "testuser#example.com")';
cy.task('runSql', sql).then((rows) => {
expect(rows).to.equal(1);
});
});
});
What im trying to do is to connect MySQL database in my project in the config file.
config/db.js
const mysql = require('mysql')
const connection = mysql.createConnection({
host: 'localhost',
user: 'root',
password: '',
database: 'mydatabase'
})
const connectDb = async () => {
const conn = await connection.connect(function (err) {
if (err) {
return console.error("error: ", err.message);
}
console.log("Connected to MySql server");
});
};
server.js
const connectDB = require("./config/db");
connectDB();
I have done this by fare and in my terminal is shown this error: TypeError: connectDb is not a function
How can I connect MySQL in the config file?
you'll need to export the connection verb, and delete the whole "connectDb" function
config/db.js
const mysql = require('mysql')
const connection = mysql.createConnection({
host: 'localhost',
user: 'root',
password: '',
database: 'mydatabase'
})
connection.connect(function(err) {
if (err) throw err;
});
module.exports = connection;
server.js
const database = require("./config/db");
database.queryOrAnythignElse();
You'll probably want to learn again the basics of js and what is module.exports and etc...
I'm making a bot for my Discord server but I have a problem with a test command that I have created. When I run the command I receive this text : undefined. And I don't know why.
My database file :
const mysql = require('mysql')
const db = mysql.createConnection({
host: 'localhost',
port: 3306,
user: 'root',
password: '',
database: 'velocity_discord'
})
module.exports = (client) => {}
module.exports.getTicketNumber = () => {
db.query(`SELECT * FROM tickets WHERE botId = '861586919653638145'`, (err, number) => {
if (err) {
console.log(err)
} else {
if (number) {
return number[0].ticketNumber
}
}
})
}
My command code :
const database = require('#features/database.js')
module.exports = {
commands: 'testdb',
callback: (message) => {
const msg = `${database.getTicketNumber()}`
message.channel.send({
content: msg
})
},
}
I use nodejs connect to mysql by knex. It's my code:
var logger = configlog.getLogger("dao-movies");
var configConnection = {
client: 'mysql',
connection: {
host: '127.0.0.1',
user: 'root',
password: '',
database: 'mobile_movie',
port: 1234
}
};
var knex = require("knex")(configConnection);
var getUser = function () {
knex("tbl_user").select()
.then(function (rows) {
logger.info(rows);
})
.catch(function (error) {
logger.error("Error select tbl_user: " + error);
});
}
But it's not working.
This is the error: