salix/modules/client/back/models/specs/clientCredit.spec.js

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

describe('Client Credit', () => {
    const instance = {id: 1101, name: 'Bruce Banner'};

    describe('after save', () => {
        it('should delete old rows of clientCredit', async() => {
            const tx = await models.ClientCredit.beginTransaction({});
            const clientConfig = await models.ClientConfig.findOne({
                where: {id: 1}
            });

            let rowsBefore;
            let rowsAfter;

            try {
                const options = {transaction: tx};
                const salesAssistant = await models.VnUser.findOne({
                    where: {name: 'salesAssistant'}
                }, options);

                rowsBefore = await models.ClientCredit.find({
                    where: {clientFk: instance.id},
                    order: 'created DESC',
                }, options);

                await models.ClientCredit.create({
                    amount: 355,
                    clientFk: instance.id,
                    workerFk: salesAssistant.id
                }, options);

                rowsAfter = await models.ClientCredit.find({
                    where: {clientFk: instance.id},
                    order: 'created DESC',
                }, options);

                await tx.rollback();
            } catch (e) {
                await tx.rollback();
                throw e;
            }

            const FirstRowsBefore = rowsBefore[0];
            const FirstRowsAfter = rowsAfter[0];

            expect(FirstRowsAfter.id).toBeGreaterThan(FirstRowsBefore.id);

            expect(rowsBefore.length).toBeGreaterThanOrEqual(clientConfig.maxCreditRows);
            expect(rowsAfter.length).toEqual(clientConfig.maxCreditRows);
        });
    });
});