salix/modules/supplier/back/models/specs/supplier.spec.js

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

describe('loopback model Supplier', () => {
    let supplierOne;
    let supplierTwo;

    beforeAll(async() => {
        supplierOne = await app.models.Supplier.findById(1);
        supplierTwo = await app.models.Supplier.findById(442);
    });

    afterAll(async() => {
        await supplierOne.updateAttribute('payMethodFk', supplierOne.payMethodFk);
        await supplierTwo.updateAttribute('payMethodFk', supplierTwo.payMethodFk);
    });

    describe('payMethodFk', () => {
        it('should throw an error when attempting to set an invalid payMethod id in the supplier', async() => {
            let error;
            const expectedError = 'You can not select this payment method without a registered bankery account';
            const supplier = await app.models.Supplier.findById(1);

            await supplier.updateAttribute('payMethodFk', 4)
                .catch(e => {
                    error = e;

                    expect(error.message).toContain(expectedError);
                });

            expect(error).toBeDefined();
        });

        it('should not throw if the payMethod id is valid', async() => {
            let error;
            const supplier = await app.models.Supplier.findById(442);
            await supplier.updateAttribute('payMethodFk', 4)
                .catch(e => {
                    error = e;
                });

            expect(error).toBeDefined();
        });
    });
});