describe("Tests …", () => {
    describe("sumNumbers method", () => {
        it("not numbers", () => {
            expect(testNumbers.sumNumbers("", 2)).to.be.undefined
        })
        it("not numbers", () => {
            expect(testNumbers.sumNumbers(1, "")).to.be.undefined
        })
        it("not numbers", () => {
            expect(testNumbers.sumNumbers("", "")).to.be.undefined
        })
        it("correct input", () => {
            expect(testNumbers.sumNumbers(1, 2)).to.be.equal("3.00")
        })
        it("correct input", () => {
            expect(testNumbers.sumNumbers(0, 0)).to.be.equal("0.00")
        })
        it("correct input", () => {
            expect(testNumbers.sumNumbers(1, 2.5)).to.be.equal("3.50")
        })
        it("correct input", () => {
            expect(testNumbers.sumNumbers(1.5, 2)).to.be.equal("3.50")
        })
        it("correct input", () => {
            expect(testNumbers.sumNumbers(2, -1)).to.be.equal("1.00")
        })
        it("correct input", () => {
            expect(testNumbers.sumNumbers(-2, -1)).to.be.equal("-3.00")
        })
        it("correct input", () => {
            expect(testNumbers.sumNumbers(-2.5, 1)).to.be.equal("-1.50")
        })
    })

    describe("numberChecker method", () => {
        it("not number", () => {
            expect(() => {
                testNumbers.numberChecker("").to.throw("The input is not a number!")
            })
        })
        it("not number", () => {
            expect(() => {
                testNumbers.numberChecker([]).to.throw("The input is not a number!")
            })
        })
        it("even",() => {
            expect(testNumbers.numberChecker(2)).to.be.equal("The number is even!")
        })
        it("even",() => {
            expect(testNumbers.numberChecker(0)).to.be.equal("The number is even!")
        })
        it("odd",() => {
            expect(testNumbers.numberChecker(1)).to.be.equal("The number is odd!")
        })
    })

    describe("averageSumArray method", () => {
        it("correct return",()=>{
            expect(testNumbers.averageSumArray([5,2,3,0])).to.be.equal(2.5)
        })
        it("correct return",()=>{
            expect(testNumbers.averageSumArray([5,5])).to.be.equal(5)
        })

    })
});