library

describe('Tests library', function () {
    describe('calcPriceOfBook ', function () {
        it('assert with valid params', function () {
            assert.equal(
                library.calcPriceOfBook('Some book', 1980),
                'Price of Some book is 10.00'
            );
            assert.equal(
                library.calcPriceOfBook('Some book', 1979),
                'Price of Some book is 10.00'
            );
            assert.equal(
                library.calcPriceOfBook('Some book', 1981),
                'Price of Some book is 20.00'
            );
            assert.equal(
                library.calcPriceOfBook('Some book', 0),
                'Price of Some book is 10.00'
            );
        });

        it('assert with invalid params, expect to throw', function () {
            assert.Throw(
                () => library.calcPriceOfBook('Some book'),
                'Invalid input'
            );
            assert.Throw(
                () => library.calcPriceOfBook('Some book', '1987'),
                'Invalid input'
            );
            assert.Throw(
                () => library.calcPriceOfBook('Some book', [1987]),
                'Invalid input'
            );
            assert.Throw(
                () => library.calcPriceOfBook('Some book', 1987.6),
                'Invalid input'
            );
            assert.Throw(
                () => library.calcPriceOfBook(['Some book'], 0),
                'Invalid input'
            );
            assert.Throw(() => library.calcPriceOfBook(0, 0), 'Invalid input');
            assert.Throw(() => library.calcPriceOfBook(1876), 'Invalid input');
        });
    });

    describe('findBook', function () {
        it('assert  with valid param', function () {
            assert.equal(
                library.findBook(
                    ['Troy', 'Life Style', 'Torronto'],
                    'Some book'
                ),
                'The book you are looking for is not here!'
            );
            assert.equal(
                library.findBook(['Troy', 'Life Style', 'Torronto'], 'Troy'),
                'We found the book you want.'
            );
        });
        it('assert  with valid param, [] - throw', function () {
            assert.Throw(
                () => library.findBook([], 'Some book'),
                'No books currently available'
            );
        });
    });
    describe('arrangeTheBooks', function () {
        it('assert with valid params', function () {
            assert.equal(
                library.arrangeTheBooks(6),
                'Great job, the books are arranged.'
            );
            assert.equal(
                library.arrangeTheBooks(40),
                'Great job, the books are arranged.'
            );
            assert.equal(
                library.arrangeTheBooks(41),
                'Insufficient space, more shelves need to be purchased.'
            );
            assert.equal(
                library.arrangeTheBooks(0),
                'Great job, the books are arranged.'
            );
        });
        it('assert with invalid params', function () {
            assert.throw(() => library.arrangeTheBooks(-1), 'Invalid input');

            assert.throw(() => library.arrangeTheBooks(), 'Invalid input');
            assert.throw(() => library.arrangeTheBooks(8.7), 'Invalid input');

            assert.throw(() => library.arrangeTheBooks('8'), 'Invalid input');
        });
    });
});