How can I mock a fake database for when unit testing against Knex?

Question

I\'ve been using Knex successfully to connect to a backend database. But I want to be able to unit test my code. Is there a way to mock the database connection?

I\'ve tr

Answer 1

I used jest to mock knex but I had to define an object that contains the method that I used. not the most elegant solution but is working

let knexMock = () => {
    const fn = () => {
        return {
            returning: function() {
                return {
                    insert: jest.fn().mockImplementation(() => [123123])
                }
            },
            insert: jest.fn()
        }
    }
    fn.raw = jest.fn()
    return fn
}

knex.mockImplementation(knexMock)