spaiz/objectId_tests

Tests to show ObjectId asserting doesn't work as expected for Mongoose v6

Tests for comparing Mongoose ObjectId for different Mongoose versions.

Mongoose v5

cd mongoosev5
nvm use 16
npm i
./node_modules/.bin/mocha test.js

Mongoose v6

cd mongoosev6
nvm use 16
npm i
./node_modules/.bin/mocha test.js

Issue: chaijs/chai#1470