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

describe('Sale - replaceItem function', () => {
    let options;
    let tx;
    const ctx = beforeAll.getCtx();
    beforeAll.mockLoopBackContext();
    beforeEach(async() => {
        tx = await models.Sale.beginTransaction({});
        options = {transaction: tx};
    });

    afterEach(async() => {
        if (tx)
            await tx.rollback();
    });

    it('should replace full item in sale and send notification', async() => {
        const saleFk = 43;
        const substitutionFk = 3;
        const quantity = 15;
        const ticketFk = 1000000;

        const salesBefore = await models.Sale.find({where: {ticketFk}}, options);
        const salesLength = salesBefore.length;

        expect(1).toEqual(salesBefore.length);

        await models.Sale.replaceItem(ctx, saleFk, substitutionFk, quantity, options);
        const salesAfter = await models.Sale.find({where: {ticketFk}}, options);

        expect(salesLength).toBeLessThan(salesAfter.length);
        expect(salesAfter[0].id).toEqual(saleFk);
        expect(salesAfter[salesLength].itemFk).toEqual(substitutionFk);
        expect(salesAfter[salesLength].quantity).toEqual(quantity);
        expect(salesAfter[0].quantity).toEqual(0);
        expect(salesAfter[salesLength].concept).toMatch(/^\+/);
    });

    it('should replace half item in sale and send notification', async() => {
        const saleFk = 43;
        const substitutionFk = 3;
        const quantity = 10;
        const ticketFk = 1000000;

        const salesBefore = await models.Sale.find({where: {ticketFk}}, options);
        const salesLength = salesBefore.length;

        expect(1).toEqual(salesBefore.length);

        await models.Sale.replaceItem(ctx, saleFk, substitutionFk, quantity, options);
        const salesAfter = await models.Sale.find({where: {ticketFk}}, options);

        expect(salesLength).toBeLessThan(salesAfter.length);
        expect(salesAfter[0].id).toEqual(saleFk);
        expect(salesAfter[salesLength].itemFk).toEqual(substitutionFk);
        expect(salesAfter[salesLength].quantity).toEqual(quantity);
        expect(salesAfter[0].quantity).toEqual(5);
        expect(salesAfter[salesLength].concept).toMatch(/^\+/);
    });
});