exam prep 02. Book Store Unit my sol

describe("test", function () {
    let store;
    beforeEach(function () {
        store = new BookStore('Store');
    });
    describe("Constructor tests", function () {
        it("It should initialize properties correctly", () => {
            expect(store).to.be.an.instanceof(BookStore);
            expect(store.name).to.equal('Store');
            expect(store.books).to.deep.equal([]);
            expect(store.workers).to.deep.equal([]);
        });
    });

    describe("Stockbooks tests", function () {
        it("Should push correctly", () => {
            const expectedBook = {//arrange
                "title": "Inferno",
                "author": "Dan Braun"
            };
            store.stockBooks(['Inferno-Dan Braun']);//act
            //assert
            expect(store.books.length).to.equal(1);
            expect(store.books[0]).to.deep.equal({ title: 'Inferno', author: 'Dan Braun' });
            expect(store.books[0].author).to.equal('Dan Braun');
            expect(store.books[0].title).to.equal('Inferno');

        });

    });

    describe("Hire tests", function () {
        it("Hiring a new worker", () => {
            let worker = {
                name: 'George',
                position: 'seller',
                booksSold: 0
            };
            expect(store.hire('George', 'seller')).to.equal("George started work at Store as seller");
            expect(store.workers.length).to.equal(1);
            expect(store.workers[0]).to.deep.equal(worker);
        });
        it("If the worker is already hired", () => {
            store.hire('George', 'seller');
            expect(() => store.hire('George', 'seller')).to.throw();
        });
    });
    describe("Fire tests", function () {
        it("Fire an existing worker", () => {
            store.hire('Tom', 'seller');
            expect(store.fire('Tom')).to.equal("Tom is fired");
            expect(store.workers.length).to.equal(0);
        });
        it("Firing non-existing  worker", () => {
            expect(() => store.fire('Tom')).to.throw();
        });
    });

    describe("Selling books tests", () => {

        it("Selling book with incorrect worker and title", () => {
            store.hire('Tom', 'seller');
            store.stockBooks(['Inferno-Dan Braun']);
            expect(() => store.sellBook('Infernoku', 'Ina')).to.throw();
        });
        it("Selling book with correct title and existing worker", () => {
            store.hire('Tom', 'seller');
            store.stockBooks(['Inferno-Dan Braun']);
            expect(store.sellBook('Inferno', 'Tom'));
            expect(store.workers[0].booksSold).to.equal(1);
            expect(store.books.length).to.equal(0);
        });
    });

    describe("Printing tests", function () {

        it("Printing workers", () => {
            store.hire('Daria', 'vacharox');
            store.hire('Tom', 'seller');

            expect(store.printWorkers()).to.equal(`Name:Daria Position:vacharox BooksSold:0\nName:Tom Position:seller BooksSold:0`);
        });

    });

})