var user = new User({ name: 'Jane' });
assert.record(user, user);

var user1 = new User({ name: 'Jane' });
var user2 = new User({ name: 'Bob' });

assert.records([ user1, user2 ], [ user1, user2 ]);

var user1 = new User({ name: 'Jane' });
var user2 = new User({ name: 'Bob' });

// will throw!
assert.records([ user1, user2 ], [ user2, user1 ]);

$ npm install chai-mongoose