salix/services/loopback/common/methods/order/specs/getVolumes.spec.js

const app = require(`${servicesDir}/order/server/server`);

describe('order getVolumes()', () => {
    it('should return the volumes of a given order id', async() => {
        let [result] = await app.models.Order.getVolumes(1);

        expect(result.volume).toEqual(0.04);
    });
});