Cypress Connecting to postgres database issue - postgresql

Question

running into a issue using cypress-postgres connecting to the database. Server has multiple databases along with multiple schemas. Tried multiple plugins, but can find a solution that will allow me to specify a particular schema in a database. Server is reachable over the vpn.
Will need to do this with sql database. Any help, better method suggestions welcomed.
Thank You! - Michael Frazier
IE: Database Example.
Error that is returned
no relation for home
Package.json has following dependencies:
name": "tests",
"version": "1.0.0",
"description": "Automated Tests",
"main": "index.js",
"scripts": {
"cypress:open": "cypress open",
"test": "cypress open"
},
"repository": {
"type": "git",
"url":
},
"author": "Michael Frazier
"license": "ISC",
"dependencies": {
"#testing-library/cypress": "^8.0.2",
"#testing-library/vue": "^5.8.2",
"#vue/test-utils": "^1.3.0",
"cypress-commands": "^2.0.1",
"cypress-downloadfile": "^1.2.1",
"cypress-postgres": "^1.1.1",
"cypress-postgresql": "^1.0.8",
"cypress-real-events": "^1.6.0",
"pg": "^8.7.1",
"pg-promise": "^10.5.8",
"yarn": "^1.22.17"
},
"devDependencies": {
"#4tw/cypress-drag-drop": "^2.1.0",
"#babel/core": "^7.15.0",
"#babel/preset-env": "^7.15.0",
"#cypress/skip-test": "^2.6.1",
"#cypress/webpack-preprocessor": "^5.9.1",
"#testing-library/dom": "^8.11.2",
"#types/chai": "^4.2.21",
"#types/jest": "^27.0.1",
"#types/mocha": "^9.0.0",
"cy-mobile-commands": "^0.3.0",
"cypress": "^9.5.3",
"cypress-file-upload": "^5.0.8",
"cypress-fill-command": "^1.0.2",
"cypress-iframe": "^1.0.1",
"cypress-mailosaur": "^2.6.0",
"cypress-mochawesome-reporter": "^2.4.0",
"cypress-msteams-reporter": "^1.0.3",
"cypress-plugin-tab": "^1.0.5",
"cypress-wait-until": "^1.7.2",
"dayjs": "^1.10.6",
"faker": "^5.5.3",
"mysql": "^2.18.1",
"pdf-parse": "^1.1.1",
"webpack": "^5.51.1"
}
}
Cypress.json has DB credentials in following format:
{
"trashAssetsBeforeRuns": true,
"responseTimeout": 30000,
"requestTimeout": 50000,
"defaultCommandTimeout": 4000,
"experimentalSourceRewriting": true,
"experimentalStudio": true,
"projectId": "aycmk8",
"reporter": "cypress-mochawesome-reporter",
"reporterOptions": {
"reportDir": "cypress/report",
"charts": true,
"reportPageTitle": "Melos Report"
},
"db":
{"user": "postgres",
"host": "",
"database": "",
"password": "",
"schemas": "sct",
"port": 5432
}
}
Plugin in cypress\plugins\index.js file:
module.exports = async (on, config) => {
on('task',
{dbQuery: (query)=> require('cypress-postgres')(query.query,query.connection)})
Spec file has following test:
describe("Database Health Tests", function () {
it('should ping the database to ensure its active ', function () {
cy.task("dbQuery", {"query":"select * from home"})
});

Answer 1

Your dbQuery is missing the connection string:
cy.task("dbQuery",
{
query: "select * from home",
connection: "your connection string"
})

Answer 2

If you focusing on description of cypress-postgres in npm, they provided 2-ways to use :
The first way : load your database connection via cypress.json by require('cypress-postgres').
The seconds way : set your database connection by yourself in cy.task.
The first way
This way may make you mistake, the example shows unclear parameter to you :
// In cypress\plugins\index.js
module.exports = on => {
on("task", {
dbQuery:(query)=> require("cypress-postgres")(query.query,query.connection)
});
};
I'm not sure query.connection come from. If you access to the dependency, you will see :
// In require('cypress-postgres')
const pgp = require('pg-promise')();
const postgressConfig = require(require('path').resolve('cypress.json'));
module.exports = function(query,userDefineConnection) {
let connection = postgressConfig.db
if (userDefineConnection!=undefined){
connection=userDefineConnection
}
const db = pgp(connection);
return db.any(query)
}
So you can change query.connection to your variable.
Normally, module in cypress\plugins\index.js received 2-arguments on and config. The config will refer to cypress.json, you can get your database connection via config.env.db :
{
"env": {
"db": {
"user": "postgres",
"host": "localhost",
"database": "postgres",
"password": "mysecretpassword",
"port":5432
}
}
}
Now cypress\plugins\index.js should be :
module.exports = (on, config) => {
// `on` is used to hook into various events Cypress emits
// `config` is the resolved Cypress config
on("task", {
dbQuery: (query) => require("cypress-postgres")(query.query, config.env.db)
})
}
In your *.spec.js :
// ...
it('set "Y" to db', () => {
cy.task("dbQuery", { "query": "select count(*) as num_row from home"
}).then(result => {
expect(result[0].num_row).to.equal('1')
})
})
// ...
The seconds way
This way assign database connection directly in your *.spec.js :
// ...
it('set "Y" to db', () => {
cy.task("dbQuery", {
"query": "select count(*) as num_row from home",
"connection": {
"user": "postgres",
"host": "localhost",
"database": "postgres",
"password": "mysecretpassword",
"port":5432
}
}).then(result => {
expect(result[0].num_row).to.equal('1')
})
})
// ...