mongodb-memory-server
pg-mem
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mongodb-memory-server | pg-mem | |
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9 | 13 | |
2,447 | 1,779 | |
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9.3 | 7.0 | |
8 days ago | 8 days ago | |
TypeScript | TypeScript | |
MIT License | MIT License |
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mongodb-memory-server
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How to test nestjs modules?
In the case of MongoDB there's jest-mongodb that use mongodb-memory-server; for other DBMS, I don't know if it's possible to run an instance in memory.
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My first project, a Dev.to clone built with MongoDB, Express, React, and Socket.io
The only thing really messing is tests. At work we use https://github.com/nodkz/mongodb-memory-server
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How to write tests for applications that use MongoDB as a storage
The final method tries to combine both methods, 1 and 2. It uses an external package MongoDB In-Memory Server for our MongoDB.
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How to test mongoose models with jest and mockingoose
The above test is clear and easy to understand, but the reality is that, while this can be applied to a lot of cases, things get very complicated when you have to start to mock things like dependencies, API calls, etc... And one very tricky case is when you have to test a function that invoke some models from an ODM like Mongoose, like doing some CRUD operations against a database. In some cases a solution could be to use an actual test database, so you don't mock anything but you use real data. The only problem with that is that is assuming that you must have a database at your disposal to run unit tests, and that's not always possible, plus you have to clean the database, and a pletora of other problems. Another solution could be to use a database that lives only in memory and only for the duration of your tests, like the excellent mongodb-memory-server package. But while this will work most of the times, if you deploy your code on any CI/CD you might encounter problems (and I did!). Also a key factor of unit testing, is that you shouldn't rely on external services run them, unlike E2E tests for example. What you should do is to mock most of the dependencies you need, as your goal is to just test the function and no deeper than that.
- Show HN: Mongita is to MongoDB as SQLite is to SQL
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Setup in-memory database for testing Node.js and Mongoose
I've been working on creating an application using Node.js and Mongoose where all data stored in the cloud MongoDB Atlas. My goal was to test API endpoints and write some unit tests, for that I found this package called mongodb-memory-server, which allows me to create a connection to the MongoDB server from my cache folder without a need to use cloud test database or installing mongodb client.
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Testing with MongoDB-Memory-Server
In both articles, the authors refer to nodkz's mongodb-memory-server package.
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MongoDB Animated: Adding and removing elements from arrays
mongodb-memory-server package by @nodkz
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In memory mongoDB for testing
There are a whole lot of configuration options for you to explore with this package here -> https://github.com/nodkz/mongodb-memory-server
pg-mem
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Show HN: I open-sourced the in-memory PostgreSQL I built at work for E2E tests
I've used pgmem https://github.com/oguimbal/pg-mem for the last couple of years for the same thing.
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Ask HN: How do you test SQL?
I was wondering the other day how to classify tests that use a test double like pg-mem, which isn't a mock but isn't the Dockerized test DB either :
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How to test nestjs modules?
In my case, I use TypeORM with PostgreSQL, and there's pg-mem to run an instance in memory, it supports most of the common functionality of PostgreSQL but you will need to do some adjustment to your code to be within the limits.
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Working with offline data
Postgres in the browser is possible through pg-mem: "pg-mem is an experimental in-memory emulation of a postgres database" but it also suffers from no persistence. If you can persist to a file somewhere then read it in on startup (and if your local data isn't huge) this might work.
- Pg-mem: An in-memory re-implementation of PostgreSQL in JavaScript
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Haskell as a first timer - Am I missing something ? Or is something broken ?
Dont get me wrong: I am trying to contribute to opensource as well, so I get that supporting small projects can be demanding. There's nothing wrong in not spending your weekends on OS. But not asking for help, nor specifying that a project is unmaintained, nor even answering issues & pull requests for years feels just wrong.
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Ask HN: What Are You Working On?
A pure Javascript in memory emulation of Posgres, to help writing better node tests https://github.com/oguimbal/pg-mem
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pg-mem, an in memory postgres DB instance for your unit tests, is now bound to multiple libraries (Knex, Typeorm, Slonik, pg, pg-promise) ... suggestions for the next one ?
Okay, I had a bit of spare time,I've implemented that, and it is now available with [email protected]
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Zero delay development & unit testing iterations
To get a glimpse of what I'm talking about, you can clone this repo and follow "Development" instructions (by the way this is a small OS lib I maintain, I wrote about it here)
What are some alternatives?
mongodb-jest-testing - Tests with jest and mongodb
NeDB - The JavaScript Database, for Node.js, nw.js, electron and the browser
Docker Compose - Define and run multi-container applications with Docker
Prisma - Next-generation ORM for Node.js & TypeScript | PostgreSQL, MySQL, MariaDB, SQL Server, SQLite, MongoDB and CockroachDB
indradb - A graph database written in rust
Lowdb - Simple and fast JSON database
mongita - "Mongita is to MongoDB as SQLite is to SQL"
typescript-clean-architecture - It is my attempt to create Clean Architecture based application in TypeScript.
apollo-mongoose-plugin - Apollo GraphQL plugin to add MongoDB query information on the extensions node
maplibre-gl-js - MapLibre GL JS - Interactive vector tile maps in WebGL2
lungo - A MongoDB compatible embeddable database and toolkit for Go.
database-js - Common Database Interface for Node