association.test.js

'use strict';

const chai = require('chai');
const expect = chai.expect;
const Support = require('../support');
const current = Support.sequelize;
const AssociationError = require('../../../lib/errors').AssociationError;

describe(Support.getTestDialectTeaser('belongsTo'), () => {
  it('should throw an AssociationError when two associations have the same alias', () => {
    const User = current.define('User');
    const Task = current.define('Task');

    User.belongsTo(Task, { as: 'task' });
    const errorFunction = User.belongsTo.bind(User, Task, { as: 'task' });
    const errorMessage = 'You have used the alias task in two separate associations. Aliased associations must have unique aliases.';
    expect(errorFunction).to.throw(AssociationError, errorMessage);
  });
});