mongodb-memory-server
Spinning up mongod in memory for fast tests. If you run tests in parallel this lib helps to spin up dedicated mongodb servers for every test file in MacOS, *nix, Windows or CI environments (in most cases with zero-config).
Easy to Use
mongodb-memory-server was build with "easy-to-use" in mind
Focus on What Matters
mongodb-memory-server can be quickly added to projects on many systems
Supports Many Systems
mongodb-memory-server supports many different systems without problems (exceptions are some linux distributions)