Question

I’m asking this because when I write unit tests, I want to drop the test database and insert some initialize data, and also check the data in mongodb in testing. So I need raw operations to mongodb.

How to do this in mongoose? What I can do now is just create the connection, and not find any document in mongoose’s official site.

 var mongoose = require('mongoose');
 mongoose.connect('mongo://localhost/shuzu_test');

 // get the connection
 var conn = mongoose.connection;

But how to:

1. drop the database
2. create a collection
3. write some data to a collection
4. query a collection
5. drop a collection

Answer 1

See the section on "Driver Access" in the docs:
http://mongoosejs.com/

Basically you can get access to the node-mongodb-native driver by doing YourModel.collection and then you can insert or remove or drop or whatever you need.

There’s not a doc, but with this approach you’ll get access to everything in here:
https://mongoosejs.com/docs/api.html#collection-js

Edit:

In your case you may want to skip using mongoose in your test suite and use the node-mongodb-native directly, or even write a simple mongodb shell script that can be run before your tests start.