Warehouse

describe('Warehouse', function() {
    let warehouse;
      beforeEach(function () {
          warehouse = new Warehouse(20);
      });
           it('Test valid constructor', function () {
              expect(warehouse.capacity).to.equal(20);
           })
           it('Test invalid constructor', function () {
              expect(() => new Warehouse(-20)).to.throw();
              expect(() => new Warehouse(0)).to.throw();
              expect(() => new Warehouse('s')).to.throw();
           })

           it('Test revision functionality', function () {
              expect(warehouse.revision()).to.be.equal('The warehouse is empty');
              warehouse.addProduct('Food','bread',5);
              warehouse.addProduct('Drink','coke',6);
              warehouse.addProduct('Food','meat',7);
              const check = 'Product type - [Food]\n'+
              '- bread 5\n'+
              '- meat 7\n'+
              'Product type - [Drink]\n'+
              '- coke 6';
              const otput = warehouse.revision();
              expect(otput).to.equal(check);
           })
           it("Throw error if product is not found", function () {
              expect(() => warehouse.scrapeAProduct('coke',15)).to.throw('coke do not exists');
           })
          });

          describe('Add and Sort Warehouse', function() {
                   it('Test sort functionality', function () {
                    const house = new Warehouse(20);
                    house.addProduct('Food','bread',5);
                    house.addProduct('Drink','coke',6);
                    house.addProduct('Food','meat',7);
                    const sorted = Object.keys(house.orderProducts('Food'));
                    expect(sorted[0]).to.equal('meat');
                    expect(sorted[1]).to.equal('bread');
                 })
                 it('Test add functionality', function () {
                    const house = new Warehouse(20);
                    const currentHouse = house.addProduct('Food','bread',20);
                    expect(currentHouse['bread']).to.equal(20);
                    expect(house.occupiedCapacity()).to.equal(20);
                    expect(() => house.addProduct('Food','bread',15)).to.throw();
                 })

                  });