salix/back/models/specs/company.spec.js

const {models} = require('vn-loopback/server/server');

describe('loopback model Company', () => {
    it('should check that the company FTH doesnt exists', async() => {
        let result = await models.Company.findOne({where: {code: 'FTH'}});

        expect(result).toBeFalsy();
    });
});