describe('Mathematical operations', () => {

    describe('addFive', () => {

        it('Should return undefined - addfive', () => {

            let returnValue = mathEnforcer.addFive('dassd');

            expect(returnValue).to.be.undefined;

        });


        it('Should add 5 - addfive', () => {

            let returnValue = mathEnforcer.addFive(15);

            expect(returnValue).to.be.closeTo(20, 0.01);

        });


        it('Should add 5 - addfive2', () => {

            let returnValue = mathEnforcer.addFive(-15);

            expect(returnValue).to.be.closeTo(-10, 0.01);

        });


        it('Should add 5 - addfive3', () => {

            let returnValue = mathEnforcer.addFive(15.009);

            expect(returnValue).to.be.closeTo(20, 0.01);

        });


    });


    describe('subtractTen', () => {


        it('Should return undefined - subtractTen', () => {

            let returnValue = mathEnforcer.subtractTen('dassd');

            expect(returnValue).to.be.undefined;

        });


        it('Should subtract ten - subtractTen', () => {

            let returnValue = mathEnforcer.subtractTen(15);

            expect(returnValue).to.be.closeTo(5, 0.01);

        });


        it('Should subtract ten - subtractTen2', () => {

            let returnValue = mathEnforcer.subtractTen(-15);

            expect(returnValue).to.be.closeTo(-25, 0.01);

        });

    });



    describe('sum', () => {

        it('Should return undefined - sum', () => {

            let returnValue = mathEnforcer.sum('das', 22);

            expect(returnValue).to.be.undefined;

        });


        it('Should return undefined2 - sum', () => {

            let returnValue = mathEnforcer.sum(22, 'das');

            expect(returnValue).to.be.undefined;

        });


        it('Should return a sum - sum', () => {

            let returnValue = mathEnforcer.sum(22, 12);

            expect(returnValue).to.be.closeTo(34, 0.01);

        });


        it('Should return a sum2 - sum2', () => {

            let returnValue = mathEnforcer.sum(-15, 12);

            expect(returnValue).to.be.closeTo(-3, 0.01);

        });


        it('Should return a sum3 - sum3', () => {

            let returnValue = mathEnforcer.sum(15, -12);

            expect(returnValue).to.be.closeTo(3, 0.01);

        });


        it('Should return undefined3 - sum', () => {

            let returnValue = mathEnforcer.sum('sasd', 'das');

            expect(returnValue).to.be.undefined;

        });

    });


});