cypress-mongodb

Introduction

Plugin that allows interaction with MongoDB server using Cypress commands.

Installation

run npm install cypress-mongodb
configure (see below)
profit

Supported and tested MongoDB versions

4.0, 4.2, 4.4, 5.0

Usage

cy.createCollection('new_collection', { database: 'new_database' }); // creates both collection and database

const oneDocument = {document: 1};
cy.insertOne(oneDocument, { collection: 'some_collection', database: 'some_database' }).then(res => {
    cy.log(res); // print the id of inserted document
});

const manyDocuments = [{document: 1}, {document: 2}];
cy.insertMany(manyDocuments, { collection: 'some_other_collection' }).then(res => { // defaults to database from env variable
    console.log(res); // print object with inserted ids
});

const deleteClause = {document: 1};
cy.deleteOne(oneDocument, { collection: 'new_collection', database: 'some_database' }).then(res => {
    cy.log(res); // prints 1 (or 0) document deleted
});

cy.deleteMany(deleteClause).then(res => { // defaults to collection and database from env variables
    cy.log(res); // prints '# documents deleted'
});

const pipeline = []; // any kind of aggregation
cy.aggregate(pipeline).then(res => {
    cy.log(res); // print the result of the aggregation
});

cy.dropCollection('start_new').then(res => {
    cy.log(res); // prints 'Collection dropped'
});

createCollection and dropCollection have the option to failSilently.

cy.createCollection('existing_collection', { failSilently: true}).then(res => {
    cy.log(res); // Error object if collection already exists
});

cy.dropCollection('nonexistent_collection', { failSilently: true}).then(res => {
    cy.log(res); // Error object if collection doesn’t exist
});

Environment setup

Add the following env properties in your cypress.json file:

  "env": {
    mongodb: {
      "uri": "mongodb://localhost:27017",
      "database": "database_name",
      "collection": "collection_name"
    }
  }

Note: only mongodb.uri is mandatory, you can always override/set database and collection names in each cypress mongodb command using options. You can set both local and remote urls.

Plugin configuration - JavaScript

In your cypress/plugins/index.js add the following:

const mongo = require('cypress-mongodb');

module.exports = (on, config) => {
  mongo.configurePlugin(on);
}

In your cypress/support/index.js add the following:

const mongo = require('cypress-mongodb');
mongo.addCommands();

Plugin configuration - TypeScript

In your cypress/plugins/index.ts add the following:

import * as mongo from 'cypress-mongodb';

/**
 * @type {Cypress.PluginConfig}
 */
export default (on, config) => {
    mongo.configurePlugin(on);
}

In your cypress/support/index.ts add the following:

import * as mongo from "cypress-mongodb";
mongo.addCommands();

Future development & support

Update command support.
Explicit support for fixture files planned.
Please create feature requests for things you'd like to see.
Please raise issues for any problems you encounter.