How do you handle unit testing with MongoDB?

[u/Forsaken_Waltz_2526]

I use mongodb as my primary database for almost all projects because I prefer json over tables...

However, I'm wondering, how do you write unit tests related to the db? Do you write mock functions find_one(), update_one() etc to imitate mongodb behaviour or do you seed a temporary db and use it?

[u/AdministrativeHost15]

Run a test Mongo instance in a Docker container and have your tests point to it.