What is mongodb-memory-server-core?
The mongodb-memory-server-core package provides an in-memory MongoDB server for testing purposes. It allows developers to spin up a MongoDB server instance that runs entirely in memory, making it ideal for unit tests and integration tests where a real MongoDB server would be overkill or too slow.
What are mongodb-memory-server-core's main functionalities?
Start an In-Memory MongoDB Server
This feature allows you to start an in-memory MongoDB server instance. The code sample demonstrates how to create a new MongoMemoryServer instance and retrieve its URI.
const { MongoMemoryServer } = require('mongodb-memory-server-core');
(async () => {
const mongod = new MongoMemoryServer();
const uri = await mongod.getUri();
console.log(`MongoDB Server started at ${uri}`);
})();
Stop the In-Memory MongoDB Server
This feature allows you to stop the in-memory MongoDB server instance. The code sample demonstrates how to start and then stop the MongoMemoryServer instance.
const { MongoMemoryServer } = require('mongodb-memory-server-core');
(async () => {
const mongod = new MongoMemoryServer();
await mongod.start();
console.log('MongoDB Server started');
await mongod.stop();
console.log('MongoDB Server stopped');
})();
Use with Mongoose
This feature allows you to use the in-memory MongoDB server with Mongoose. The code sample demonstrates how to connect Mongoose to the in-memory MongoDB server, perform database operations, and then disconnect and stop the server.
const mongoose = require('mongoose');
const { MongoMemoryServer } = require('mongodb-memory-server-core');
(async () => {
const mongod = new MongoMemoryServer();
const uri = await mongod.getUri();
await mongoose.connect(uri, { useNewUrlParser: true, useUnifiedTopology: true });
console.log('Mongoose connected to in-memory MongoDB');
// Perform database operations
await mongoose.disconnect();
await mongod.stop();
})();
Other packages similar to mongodb-memory-server-core
mockgoose
Mockgoose is a library that provides a mock to mongoose by using an in-memory database. It is similar to mongodb-memory-server-core in that it allows for in-memory MongoDB instances, but it is specifically designed to work with Mongoose.
mongodb-memory-server
Mongodb-memory-server is a higher-level package that wraps around mongodb-memory-server-core and provides additional features and utilities. It is more user-friendly and includes more out-of-the-box functionality compared to mongodb-memory-server-core.
mongo-unit
Mongo-unit is a library that provides utilities for unit testing with MongoDB. It allows you to start and stop in-memory MongoDB instances and load initial data. It is similar to mongodb-memory-server-core but includes additional utilities for unit testing.