salix/back/methods/collection/spec/addItem.spec.js

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

describe('collection addItem()', () => {
    const quantity = 3;
    const ticketFk = 24;
    const warehouseFk = 1;
    beforeAll(async() => {
        activeCtx = {
            req: {
                accessToken: {userId: 9},
                headers: {origin: 'http://localhost'},
                __: value => value
            }
        };
        spyOn(LoopBackContext, 'getCurrentContext').and.returnValue({
            active: activeCtx
        });
    });

    it('should add a new sale', async() => {
        const tx = await models.Sale.beginTransaction({});

        try {
            const options = {transaction: tx};
            const code = '1111111111';

            const salesBefore = await models.Sale.find(null, options);
            await models.Collection.addItem(activeCtx, code, quantity, ticketFk, warehouseFk, options);
            const salesAfter = await models.Sale.find(null, options);

            expect(salesAfter.length).toEqual(salesBefore.length + 1);
            await tx.rollback();
        } catch (e) {
            await tx.rollback();
            throw e;
        }
    });

    it('should throw an error when the item is not available', async() => {
        const code = '00000000000';
        const tx = await models.Sale.beginTransaction({});

        try {
            const options = {transaction: tx};

            await models.Collection.addItem(activeCtx, code, quantity, ticketFk, warehouseFk, options);
            await tx.rollback();
        } catch (e) {
            await tx.rollback();
            const error = e;

            expect(error.message).toEqual('We do not have availability for the selected item');
        }
    });
});