const assert = require('assert')

const _ = require('lodash')

const lodashId = require('lodash-id')

const mixins = require('../../src/server/mixins')

describe('mixins', () => {

let db

before(() => {

_.mixin(lodashId)

_.mixin(mixins)

})

beforeEach(() => {

db = {

posts: [

{ id: 1, comment: 1 }

],

comments: [

{ id: 1, postId: 1 },

// Comments below references a post that doesn't exist

{ id: 2, postId: 2 },

{ id: 3, postId: 2 }

],

photos: [

{ id: '1' },

{ id: '2' }

]

}

})

describe('getRemovable', () => {

it('should return removable documents', () => {

const expected = [

{ name: 'comments', id: 2 },

{ name: 'comments', id: 3 }

]

assert.deepEqual(_.getRemovable(db, { foreignKeySuffix: 'Id' }), expected)

})

it('should support custom foreignKeySuffix', () => {

const expected = [

{ name: 'comments', id: 2 },

{ name: 'comments', id: 3 }

]

assert.deepEqual(_.getRemovable(db, { foreignKeySuffix: 'Id' }), expected)

})

})

describe('createId', () => {

it('should return a new id', () => {

assert.equal(_.createId(db.comments), 4)

})

it('should return a new uuid', () => {

assert.notEqual(_.createId(db.photos), 3)

})

})

})