Insert 100k Minimal Docs into test DB - MongoDB

insert100k.js

// simple for loop to insert 100k records into the test databases
var testDB = db.getSiblingDB("test");
// drop the collection, avoid dupes
testDB.timecheck.drop();
for(var i = 0; i < 100000; i++){
    testDB.timecheck.insert(
        {_id : i}
        )
};