import chai from "chai";
let expect = chai.expect;

export function polynomA(Xvalue:number) {
   return 3*Xvalue*Xvalue+2*Xvalue+1
}

describe("From poly file", () => {
   describe("Testing poly function for trival values", () => {
     it("Is polynom A equal to 1 for x = 0?", () => {
      let result = polynomA(0);
      expect(result).is.equal(1);
     })
     it("Is polynom A equal to 6 for x = 1?", () => {
      let result = polynomA(1);
      expect(result).is.equal(6);
     })
     it("Is polynom A equal to 2 for x = -1?", () => {
      let result = polynomA(-1);
      expect(result).is.equal(2);
     })
   })
   describe("Testing poly function with random values", () => {
      let x = Math.floor(Math.random()*100)+2
      let result = polynomA(x);
      it("The polynom is greater then 0", () => {
       expect(result).is.greaterThan(0);
      })
      it("The polynom is greater then x", () => {
       expect(result).is.greaterThan(x);
      })
    })
})