Unit Testing 07. Warehouse

describe("Test", function () {
    let warehouse;
    beforeEach(function () {
        warehouse = new Warehouse(5);
    });

    it('should give correct message for empty warehouse', function () {
        expect(warehouse.revision()).to.be.equal('The warehouse is empty')
    })
});
describe('Warehouse', () => {
    describe("Constructor Tests", () => {
        it('should throw string if givenSpace <= 0 or non-number argument',
            () => {
                expect(() => {
                    new Warehouse(-1)
                }).to.throw();
                expect(() => {
                    new Warehouse(0)
                }).to.throw();
                expect(() => {
                    new Warehouse("a")
                }).to.throw();
            });
        it('should throw string no free space is available', () => {
            let warehouse = new Warehouse(1);
            assert.throws(() => warehouse.addProduct('Food', 'bread', 2))
        });
        it('should sort foods in descending order by quantity', () => {
            let warehouse = new Warehouse(12);
            warehouse.addProduct('Food', 'bread', 1);
            warehouse.addProduct('Food', 'potatoes', 2);
            warehouse.addProduct('Food', 'mushrooms', 3);
            warehouse.orderProducts('Food');
            let foods = JSON.stringify(warehouse.availableProducts.Food);
            assert.equal(foods, '{"mushrooms":3,"potatoes":2,"bread":1}')
        });
        it('should return string "The warehouse is empty" for 0 products', () => {
            let warehouse = new Warehouse(4);
            expect(warehouse.revision()).to.be.equal('The warehouse is empty')
        });
        it('throw error for non existing type', function () {
            expect(() => {
                let warehouse = new Warehouse(5);
                warehouse.addProduct('Food', 'banana', 4);
                warehouse.addProduct('Food', 'apple', 1);
                warehouse.scrapeAProduct('tomato', 1)
            }).to.throw('tomato do not exists');
        })
    });
});